Tag: spaceflight

Sunspot update: For the first time in 2022, sunspot activity eases

3:58 pm

With the year half over, the Sun in June did something it had not done since the start of the year: The number of sunspots seen daily on the Sun’s visible hemisphere actually declined from the month before.

I know this because, as I do every month, I have posted below NOAA’s monthly update of its graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere, with some addition details added to provide a larger context.

» Read more

One comment

The new damage on Curiosity’s wheels

9:30 am

Comparing a Curiosity wheel from January to June 2022
To see the original images, go here and here.

On June 23, 2022 the Curiosity team provided a major update on the rover’s status on Mars, noting that because of new damage discovered on one of wheels, they were increasing the frequency of their wheel checks from once every 1000 meters of travel to once every 500 meters.

The team discovered that the left middle wheel had damaged one of its grousers, the zig-zagging treads along Curiosity’s wheels. This particular wheel already had four broken grousers, so now five of its 19 grousers are broken.

The previously damaged grousers attracted attention online recently because some of the metal “skin” between them appears to have fallen out of the wheel in the past few months, leaving a gap.

The photo comparison to the right might be showing that specific wheel, or not. The top image was taken January 11, 2022, and when compared then with an image taken six months earlier showed little change. Thus, in January 2022 it seemed the wheels were holding up well as Curiosity traveled into the mountains.

The new image at the bottom, taken June 3, 2022, shows new damage (as indicated by the plus sign) which had occurred sometime in the past six months. During that time the rover had attempted to cross the incredibly rough ground of the Greenheugh Pediment, and had been forced to retreat because the ground was too rough.

This most recent wheel survey in June thus confirms that the decision to retreat was a wise one. It appears that while the rover’s wheels can take the general roughness of the terrain in the foothills of Mount Sharp, the Greenheugh Pediment was beyond the wheels’ capabilities.

One comment

Rocket Lab’s Photon completes course corrections, deploys CAPSTONE to Moon

8:45 am

Capitalism in space: Rocket Lab’s Photon upper stage successfully completed its seventh engine burn, putting NASA’s cubesat test lunar orbital on a path toward the Moon.

Following its launch on June 28, CAPSTONE orbited Earth attached to Rocket Lab’s Photon upper stage, which maneuvered CAPSTONE into position for its journey to the Moon. Over the past six days, Photon’s engines fired seven times at key moments to raise the orbit’s highest point to around 810,000 miles from Earth before releasing the CAPSTONE CubeSat on its ballistic lunar transfer trajectory to the Moon. The spacecraft is now being flown by the teams at Advanced Space and Terran Orbital. [emphasis mine]

From here on out CAPSTONE will use its own tiny thrusters to do any course corrections as it heads for an arrival in lunar orbit on November 13, 2022.

The highlighted words in the quote above are significant in and of themselves. The spacecraft is not being operated by NASA. In fact, other than paying for it, NASA has little to do with CAPSTONE. It was designed and built by Terran Orbital. It was launched by Rocket Lab. And it is now being controlled by Advanced Space, a private commercial company focused on providing in-space operations for others.

6 comments

One of Perseverance’s two wind sensors damaged by wind-blown material

5:09 pm

According to the principal investigator for Perseverance’s two wind sensors, one was recently damaged by a wind-blown tiny pebble.

Pebbles carried aloft by strong Red Planet gusts recently damaged one of the wind sensors, but MEDA can still keep track of wind at its landing area in Jezero Crater, albeit with decreased sensitivity, José Antonio Rodriguez Manfredi, principal investigator of MEDA, told Space.com. “Right now, the sensor is diminished in its capabilities, but it still provides speed and direction magnitudes,” Rodriguez Manfredi, a scientist at the Spanish Astrobiology Center in Madrid, wrote in an e-mail. “The whole team is now re-tuning the retrieval procedure to get more accuracy from the undamaged detector readings.”

…Like all instruments on Perseverance, the wind sensor was designed with redundancy and protection in mind, Rodriguez Manfredi noted. “But of course, there is a limit to everything.” And for an instrument like MEDA, the limit is more challenging, since the sensors must be exposed to environmental conditions in order to record wind parameters. But when stronger-than-anticipated winds lifted larger pebbles than expected, the combination resulted in damage to some of the detector elements.

The term “pebble” implies a larger-sized particle than what probably hit the sensor. I suspect the “pebble” was no more than one or two millimeters in diameter, at the most.

One comment

Lucy solar panel almost completely open

11:19 am

Engineers have now been able to get the one solar panel that did not deploy completely after launch on the Lucy asteroid probe almost completely open.

From May 6 to June 16, NASA’s Lucy mission team carried out a multi-stage effort intended to further deploy the spacecraft’s unlatched solar array. The team commanded the spacecraft to operate the array’s deployment motor for limited periods of time, allowing them to closely monitor the response of the spacecraft. As a result of this effort, the mission succeeded in further deploying the array and now estimates that the solar array is between 353 degrees and 357 degrees open (out of 360 total degrees for a fully deployed array). Additionally, the array is under substantially more tension, giving it significantly more stabilization. The mission team is increasingly confident the solar array will successfully meet the mission’s needs in its current tensioned and stabilized state.

The spacecraft’s orbit is now moving into a position where communications will be limited until October, so further attempts to completely open the array will have to wait until then.

One comment

Virgin Orbit puts seven Space Force smallsats in orbit

10:05 am

Capitalism in space: Virgin Orbit last night successfully launched seven smallsats for the Space Force, using its Cosmic Girl 747 carrier plane and its LauncherOne rocket.

This was the company’s first night time launch, and its second in 2022. The leader board for the 2022 launch race remains the same:

27 SpaceX
21 China
8 Russia
4 Rocket Lab
4 ULA

The U.S. now leads China 39 to 21 in the national rankings, and the entire world combined 39 to 35.

5 comments

In 2022 freedom continues to fuel the launch industry towards new records

4:27 pm

With 2022 now half over, we can now get a quick sense of the state of the world’s rocket industry by the number of launches that have so far been accomplished this year.

Last year was the most successful year in rocketry since the launch of Sputnik in 1957. Both nations and private companies managed to launch successfully 134 times, one more than the previous record in 1975. Similarly, with 48 launches in 2021, the U.S. completed the most launches since the height of the 1960s space race, 48 total.

These high numbers last year also suggested that the growth was not a one time thing, but based on a wider sustained growth that would continue.

It now appears that both these records will be smashed in 2022. Below is a graph showing the total number of successful launches year-by-year by the United States since Sputnik, as of June 30, 2022.
» Read more

8 comments

Strange pitted and isolated ridges on Mars

2:30 pm

Context camera image of isolated ridges
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on February 17, 2012 by the wide-view context camera on Mars Reconnaissance Orbiter (MRO). It shows a section of the northern lowland plains of Mars, latitude 31 degrees north, where several very inexplicable and isolated ridges can be seen.

One ridge meanders mostly in a north-south direction, while a second instead meanders east-west. The shape of both says that neither has anything to do with any past impact crater. In fact, their random snakelike shape doesn’t really fit any obvious explanation. For example, they do not fit the look of the many fossil rivers found on Mars, where the hardened and dry riverbed channel resists erosion and becomes a ridge when the surrounding terrain erodes away.

What geological process caused them? In the decade since this photo was taken the scientists who use MRO have only been able to snap a handful of high resolution images of these ridges. The image below is the most recent, covering the area in the white rectangle above.
» Read more

2 comments

Kepler signs up D-Orbit’s orbital tug for its next two satellites

9:56 am

Capitalism in space: The Canadian company Kepler — which already has nineteen satellites in orbit providing data communications — will use the orbital tug developed by the start-up D-Orbit and dubbed ION on its next two satellites.

After separating from the launch vehicle, D-Orbit intends to use ION to drop Kepler’s satellites off at a sun-synchronous orbit (SSO) between 500 and 600 kilometers. Each satellite is the size of six cubesats, a standard smallsat form factor measuring 10 centimeters on each side.

Kepler previously had a deal to use Momentus’s Vigoride tug, but delays and further in-orbit technical problems with that tug has apparently forced it to switch to D-Orbit.

Leave a comment

New research confirms long term bone loss during long missions in weightlessness

9:46 am

According to new research done on ISS, scientists have confirmed what Soviet-era scientists had learned back in the 20th century, that long term bone loss during long missions in weightlessness can take many months to recover once back on Earth.

The bone density lost by astronauts was equivalent to how much they would shed in several decades if they were back on Earth, said study co-author Dr Steven Boyd, of Canada’s University of Calgary and director of the McCaig Institute for Bone and Joint Health.

The researchers found that the shinbone density of nine of the astronauts had not fully recovered after a year on Earth – and they were still lacking about a decade’s worth of bone mass. The astronauts who went on the longest missions, which ranged from four to seven months on the ISS, were the slowest to recover. “The longer you spend in space, the more bone you lose,” Boyd said.

The study also confirmed that some exercises in space helped to mitigate the bone loss, which ranged from 1% to 2% per month. No exercises prevented it however.

For missions to Mars, the bone loss appears less of an issue than the loss of muscle strength. Even with extensive bone loss after six months to a year in space astronauts do not notice this loss when returning to Earth gravity. They will certainly not notice it on Mars, with a gravity field 39% that of Earth’s.

More concerning is the loss of muscle strength during long missions in weightlessness. After six months to a year in weightlessness astronauts struggle on Earth to walk after first landing. This is why they are helped immediately placed to chairs upon return. On Mars no such help will be available.

8 comments

OneWeb signs up startup rocket company Relativity for future satellite launches

9:34 am

Capitalism in space: The rocket startup Relativity, which hopes to complete its first test launch of its small Terran-1 rocket before the end of the year, yesterday announced that it has won a launch contract with OneWeb to use its larger but not-yet-ready-for-launch Terran-R rocket to place future OneWeb satellites into orbit.

Under the agreement, Relativity will launch OneWeb’s low Earth orbit (LEO) satellites on Terran-R, the first fully reusable and entirely 3D printed rocket, starting in 2025. These launches will support OneWeb’s deployment of its Gen 2 satellite network, which will add capacity and fresh capabilities to build upon the initial constellation of 648 satellites the company is currently building out.

Since its launch contract with Arianespace using Russian Soyuz rockets fell apart due to Russia’s invasion of the Ukraine, OneWeb has been signing up a range of rocket companies, first SpaceX, then India, now Relativity. Apparently the satellite company realized it was a bad idea to depend on only one rocket, and is now lining up several to make sure its satellites can launch on schedule, no matter what.

For Relativity, this agreement solidifies its future, even before it has completed its first launch. It now has five customers for its Terran-R rocket, with contracts worth $1.2 billion. All it has to do now to become a major player in the global launch market is to get its rockets off the ground.

One comment

ISRO chief: India’s manned mission will be delayed

9:22 am

The new colonial movement: The head of India’s space agency ISRO revealed during a press conference following yesterday’s PSLV launch that he is delaying by one or two years Gaganyaan manned mission.

Indian Space Research Organisation (Isro) Chairman S Somanath on Thursday said the launch of the ambitious Gaganyaan mission, the country’s first manned space flight, cannot happen this year or next year as the agency is keen to ensure that all safety systems are in place.

Somanth’s comments confirm an earlier report. It appears he wants the agency to do at least two unmanned tests of the spacecraft’s crew abort system. He also want further tests of the GSLV rocket that will launch the manned capsule.

Somanth also indicated that India’s next attempt to land a rover on the Moon, Chandrayaan-3, might also be delayed from the presently scheduled August ’22 target launch as they review the lander’s systems.

One comment

FCC approves Starlink for moving vehicles; rejects DISH’s request to use Starlink wavelength

9:06 am

The FCC made two decisions yesterday that were both favorable to SpaceX’s Starlink satellite constellation.

First, it gave Starlink permission to provide service on moving vehicles such as cars, trucks, boats, and aircraft. Second, it rejected a DISH network request to use a wavelength in its ground-based system that is presently being used by both Starlink and OneWeb satellites.

This decision will continue the shift in communications from high-orbit/ground-based to low-orbit satellite constellations.

One comment

Glacial features in a Mars crater at 29 degrees south latitude?

3:56 pm

Glacial features in Mars crater
Click for full image.

Cool image time! The photo to the right, cropped and reduced to post here, was taken on January 2, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Simply labeled “slope features,” it was likely taken to monitor the gullies and streaks on the interior walls of this 4-mile-wide crater. Scientists have been using MRO to track the coming and going of frost on this crater’s interior walls since 2016.

Equally intriguing however are what appear to be squashed layers within the crater’s interior. These appear to be some form of glacial feature created by repeated climate cycles, similar to the glacial features routinely seen throughout the 30 to 60 degree mid-latitude strips north and south.

What makes the glacial features in this particular crater particularly intriguing is its location, as shown in the overview map below.
» Read more

Leave a comment

Mirror comparable to Hubble’s ready for JPL balloon astronomy mission

10:06 am

engineers attach panels to the mirror's support structure.
Engineers attach mirror panels to the mirror’s support structure.

An Italian optics company, Media Lario, has now completed construction of the primary mirror — at 2.5 meters width slightly larger than Hubble’s primary mirror — to be used on a JPL balloon astronomy mission dubbed ASTHROS, targeting a December 2023 launch.

The ASTHROS primary mirror features nine panels, which are significantly easier to fabricate than a one-piece mirror. The bulk of the mirror panels consist of lightweight aluminum, formed into a honeycomb structure that reduces its total mass. The panel surfaces are made of nickel and coated with gold, which improves the mirror’s reflectivity at far-infrared wavelengths.

Once launched, the balloon will circle the south pole for up to four weeks, taking data on the gas distribution in several galaxies.

While that data will be worthwhile, the mission’s real goal is to test these technologies for future space-based astronomy missions. If this mission works, it will reduce significantly the cost and time necessary to make big telescope mirrors, while enhancing the robotic capabilities of such telescopes.

Leave a comment

Astronomers: A supermassive black hole rotates far slower than expected

9:53 am

Quasar as seen across multiple wavelengths
Click for full image.

The uncertainty of science: Using Chandra astronomers have measured the rotation of a supermassive black hole in a distant quasar about 3.4 billion light years away and found that it spins at about half the speed of other less massive black holes.

Because a spinning black hole drags space around with it and allows matter to orbit closer to it than is possible for a non-spinning one, the X-ray data can show how fast the black hole is spinning. The spectrum — that is, the amount of energy as a function wavelength — of H1821+643 indicates that the black hole is rotating at a modest rate compared to other, less massive ones that spin close to the speed of light. This is the most accurate spin measurement for such a massive black hole.

The black hole, thought to weigh between 3 to 30 billion times more than the Sun and is the heaviest such object measured in this way, rotates at about half the speed of light. Why that rotation is less than other smaller black holes remains a question not yet answered, though astronomers suspect it is related to its formation history.

The image above is a composite showing this quasar across multiply wavelengths. X-rays are shown in blue, radio in red, and optical in white.

One comment

Rocket Lab’s Photon upper stage completes 3rd of 7 engine firings to get CAPSTONE to Moon

9:37 am

Rocket Lab’s Photon upper stage has now successfully completed the third of seven planned engine burns designed to slowly raise the Earth orbit of NASA’s experimental lunar cubesat CAPSTONE so that it can eventually be sent towards the Moon.

Lunar Photon’s HyperCurie engine will perform a series of orbit raising maneuvers by igniting periodically to increase Photon’s velocity, stretching its orbit into a prominent ellipse around Earth. Six days after launch, HyperCurie will ignite one final time, accelerating Photon Lunar to 24,500 mph (39,500 km/h) and setting it on a ballistic lunar transfer. Within 20 minutes of this final burn, Photon will release CAPSTONE into space for the first leg of the CubeSat’s solo flight. CAPSTONE’s journey to NRHO is expected to take around four months from this point. Assisted by the Sun’s gravity, CAPSTONE will reach a distance of 963,000 miles from Earth – more than three times the distance between Earth and the Moon – before being pulled back towards the Earth-Moon system.

Once in lunar orbit, CAPSTONE will be used to both test operations in that orbit (similar to the one NASA’s Lunar Gateway space station will use) while also demonstrating the use of a cubesat on an interplanetary mission.

One comment

Amazon to FCC: Consider limiting SpaceX’s Starlink constellation for our benefit

9:28 am

In a letter sent to the FCC last week, Amazon asked the agency to limit the size of SpaceX’s full constellation so that Amazon will be free to someday launch its own Kuiper constellation.

In the recent letter, Amazon recommends the FCC license a “subset of SpaceX’s proposed system” (as opposed to the whole fleet) to give the agency additional time to consider the “novel challenges” such a significant expansion might present. For example, Amazon believes hundreds to “more than 10,000” of SpaceX’s new satellites could be operating in the altitudes already approved for its Kuiper satellites, which could cause interference in the spectrum and “orbital overlap.” The company claims SpaceX has refused its requests for communication around these concerns as it has urged the FCC to approve its application. It also cites eight other satellite operations who have objected to the plan, including Dish Network, which is currently engaged in a public battle over radio frequencies with SpaceX.

Amazon’s concerns might carry more weight if the launch of its constellation was not so delayed. Both Amazon and SpaceX began development of their satellite constellations at about the same time. Yet, while SpaceX has already launched almost 3,000 satellites, and is providing its service to several hundred thousand customers, Amazon has yet to launch a single satellite.

Thus, though what Amazon is asking the FCC seems reasonable, it is also asking the FCC to block a competitor’s successful operation while it dilly-dallies along, accomplishing little.

This pattern from Amazon fits the pattern of all of Jeff Bezos’s space-related projects: Big promises, little action, and when competitors get things done sue or demand the government play favorites. Sure does not seem to me to be a good long-term business plan.

3 comments

India’s PSLV rocket completes launch, putting nine satellites into orbit

9:08 am

India’s PSLV rocket successfully placed nine satellites into orbit today, completing that country’s second launch in 2022.

Since the Wuhan panic arrived in 2020, India’s space program has slowed to a crawl. Beforehand, it had been averaging six launches per year with the expectation that in 2020 it might double that number. Furthermore, the PSLV rocket had been a major player in the emerging smallsat market, routinely putting one to three dozen smallsats into orbit with each launch, with one launch in 2017 putting a record 104 smallsats into orbit.

Then the Wuhan panic arrived and everything stopped. Today’s PSLV launch was only its fifth launch since 2019. With almost all launches canceled, India’s smallsat business moved to SpaceX, Rocket Lab, and other rocket companies that did not panic and continued to launch.

Today’s launch however might signal a renewal. It was not managed by India’s old space agency, ISRO, but a new government agency called NewSpace India Limited (NSIL), which is supposedly focused on encouraging the growth of India’s commercial aerospace sector, independent of the government. Whether a government agency can accomplish such a task in India remains entirely unknown.

The leader board in the 2022 launch race remains the same:

27 SpaceX
21 China
8 Russia
4 Rocket Lab

American private enterprise still leads China 37 to 21 in the national rankings, and the entire world combined 37 to 34.

A ULA Atlas-5 launch later today could change these numbers.

Leave a comment

SpaceX launches SES communications satellite

2:14 pm

Capitalism in space: SpaceX today successfully launched a SES communications satellite, using its Falcon 9 rocket.

The first stage, making its second flight, successfully landed on a drone ship in the Atlantic. As of this writing, the satellite itself has not yet been deployed.

The leaders in the 2022 launch race:

27 SpaceX
21 China
8 Russia
4 Rocket Lab

American private enterprise now leads China 37 to 21 in the national rankings, and the entire world combined 37 to 34.

Leave a comment

The lava tubes on the western slopes of Alba Mons as potential Martian colonies

12:20 pm

Lava tubes on western flank of Alba Mons
Click for full figure.

In a new paper detailing work they first began in 2019, scientists have now carefully mapped the extensive lava tubes that appear to radially descend westward from the caldera of Alba Mons, the volcano on Mars that has the largest surface area but with a relatively low peak.

The mapped population of 331 lava tube systems has a mean length of 36.2 km, with a total length in the western flank geologic map quadrangle of ∼12,000 km. Individual lava tube systems extend up to ∼400 km, and it is likely that some of our mapped lava tubes are connected such that the total number is actually smaller and lengths (average and maximum) longer.

The map above, figure 10 of their paper, shows volcanic ridges as yellow, collapsed lava tube segments as red, and collapsed lava tube on the volcanic ridge as maroon. The wider map below, shows where this region is located, and gives the larger context.
» Read more

7 comments

Sierra Space signs partnership deal with Turkey

10:15 am

Sierra Space and ESEN (another affiliated company of Sierra Space’s mother company Sierra Nevada) have signed a partnership agreement with the Turkish Space Agency to work together over the next five years in developing Sierra Space’s Dream Chaser spacecraft and its LIFE orbital space station.

Though the agreement mentions how the three will work together to develop both Dream Chaser and LIFE, because of State department security regulations Sierra Space must be very careful about what technology it reveals to Turkey. I therefore expect the heart of the agreement are these two bullet points from the press release:

  • Space environment utilization on-orbit in LEO, including use of Sierra Space’s Large Integrated Flexible Environment (LIFE) space habitat module
  • Sending payloads to low Earth orbit (LEO) and the moon

Turkey wants to launch its own planetary probes as well as astronauts in order to compete with its Middle East neighbor the UAE. It has thus decided to pay Sierra Space to help it do that. The company can use the cargo Dream Chaser to lift smallsat payloads into orbit, and later use the manned version to lift Turkish astronauts to the LIFE station.

4 comments

Axiom leases former Fry’s retail building housing fullscale mock-up of ISS

10:00 am

Capitalism in space: The private commercial space station company Axiom has leased a former Fry’s retail building that also happens to house the only fullscale mock-up of ISS anywhere.

Axiom Space, which has a contract with NASA to test components of its planned Axiom Station at the International Space Station, has leased the former location of Fry’s Electronics in Webster, Texas to house its engineering operations. The former big-box retail store, which closed when the national chain went out of business in 2021, is unique for its football-field-long representation of the ISS.

…Contained within a building that itself was shaped to resemble oversized space station modules, the former Fry’s ISS includes most of the real complex’s major components. The mockup features the U.S. Destiny laboratory, Quest airlock and Cupola; Russia’s Zvezda service module and Zarya functional cargo block (FGB); Japan’s Kibo laboratory; and the European Space Agency Columbus module.

The space station installation also has a replica of the Canadarm2 robotic arm, a Russian Soyuz spacecraft, two models of NASA’s never-realized X-38 emergency crew return vehicle and astronauts (mannequins) in replica spacesuits. Additional oversized modules previously served as product demonstration rooms and an in-store cafe, while most of the station sat among and above aisles of computers and other devices.

Most of the mock-up hangs overhead, out of the way. In reconfiguring the building for its own use, Axiom intends to leave these mock-up units untouched. Engineers will do design work and module development of Axiom’s own station below.

Axiom’s occupation of this building is only temporary. Once its larger facility is completed in the next few years in the industrial park dubbed Houston Spaceport it will shift all operations there.

One comment

Scientists want your help cataloging the clouds on Mars

9:49 am

In order to fully identify all the clouds seen in the sixteen years of data collected by the cloud instrument on Mars Reconnaissance Orbiter (MRO), scientists have now organized a citizen-scientist project to catalogue those clouds.

The project revolves around a 16-year record of data from the agency’s Mars Reconnaissance Orbiter (MRO), which has been studying the Red Planet since 2006. The spacecraft’s Mars Climate Sounder instrument studies the atmosphere in infrared light, which is invisible to the human eye. In measurements taken by the instrument as MRO orbits Mars, clouds appear as arches. The team needs help sifting through that data on Zooniverse, marking the arches so that the scientists can more efficiently study where in the atmosphere they occur.

You can join up by going here.

Leave a comment

SpaceX preps for final engine tests before first orbital Starship/Superheavy flight

9:42 am

Capitalism in space: Having moved its 7th prototype Superheavy booster to the launch pad in Boca Chica even as its installs the six Raptor engines on the 24th prototype of Starship, SpaceX is now about to begin the final engines tests prior to the first orbital Starship/Superheavy flight.

For the first time the chopstick arms on the launch tower were used to lift and place the Superheavy booster onto the pad. It is expected that static fire tests of its 33 Raptor engines could begin within the next few weeks.

The orbital Starship meanwhile is still in the assembly building, where engineers are installing its own six Raptor engines.

Though SpaceX has not made public the exact schedule of tests leading to launch, it is expected that the company will do a short static fire test program with Superheavy alone, and then do a follow-up short series of tests once the Starship prototype is stacked on top. Based on past history, if the tests show no problems SpaceX will quickly move to launch. Though there have been indications that it is targeting July, it would not be surprising if that date slips to August.

The race between Starship and SLS for which will get into orbit first appears to be tightening.

13 comments

Scientists claim rocket launches are going to damage ozone layer

9:25 am

Junk science: This week NOAA government scientists published a paper claiming that the upcoming increase in rocket launches worldwide is a threat to the ozone layer and will also — my heart be still — promote climate change!

The study found that a tenfold increase in the amount of soot injected into the stratosphere every year would after 50 years lead to an annual temperature increase in that layer of 1 to 4 degrees Fahrenheit (0.5 to 2 degrees Celsius). The stratosphere is the layer of the atmosphere just above the lowest troposphere. The study found that the projected warming would slow down subtropical jet streams, bands of strong wind circling the planet at the lower edge of the stratosphere that influence the African and Indian summer monsoons.

Warmer temperatures in the stratosphere would also degrade the protective ozone layer, which blocks harmful ultraviolet radiation from the sun from reaching the planet’s surface.

The paper’s abstract also said this:

We show that the rocket black carbon increases stratospheric temperatures and changes the global circulation, both of which cause a reduction in the total ozone column, mainly in the northern high latitudes. Comparing the amplitude of the atmospheric response using different emission rates provides insight into stratospheric adjustment and feedback mechanisms. Our results show that the stratosphere is sensitive to relatively modest black carbon injections.

This is garbage science, and I wouldn’t bother posting a link to it if other news sources weren’t promoting it. These predictions — based on a very simple computer model — are nothing more than guesses, and are apparently designed to both attack the growing space industry as well as garner funding for more such junk science, as illustrated by this quote from the NOAA press release:

“We need to learn more about the potential impact of hydrocarbon-burning engines on the stratosphere and on the climate at the surface of the Earth,” said lead author Christopher Maloney, a CIRES research scientist working in NOAA’s Chemical Sciences Laboratory. “With further research, we should be able to better understand the relative impacts of different rocket types on climate and ozone.”

For almost a half century climate scientists — many working for government agencies like NASA and NOAA — have been publishing junk papers like this, predicting climate doom in only a few decades unless we do as they say, while funneling boatloads of cash into their pockets. Almost none of those predictions have turned out to be correct.

This report is equally suspect, especially because it touts the false statistic that “launch rates have tripled in recent decades.” The number of launches has not tripled from its long-term average since Sputnik. The only way you can get manufacture that fake statistic is if you compare last year’s total (134) with the launch numbers from the early 1960s, before the space race had even begun. And while the launch numbers are likely to rise dramatically in the coming years, the numbers will still be infinitesimal compared to other industries. Going from 50-100 launches to 200-500 launches is hardly the end of the world.

It really is far past time for the press and the general public to stop listening to these fake papers.

19 comments

Virgin Orbit signs deal to launch from Brazil

9:02 am

Capitalism in space: Virgin Orbit yesterday announced that it has signed an agreement with the Brazil Space Agency (AEB) to establish facilities and conduct launches from that nation’s long unused Alcântara spaceport.

The license is granted to Virgin Orbit Brasil Ltda. (VOBRA), a newly formed and wholly owned Brazilian subsidiary dedicated to bringing the LauncherOne air-launch rocket system to the Alcântara Launch Center (Centro de Lançamento de Alcântara, CLA).

The formation of the VOBRA entity for dedicated Brazilian space activities is designed to bring an important new capability to the country and economic value to the region. Virgin Orbit’s LauncherOne system, which uses a customized 747 aircraft, Cosmic Girl, as its flying and fully reusable launch pad, will conduct launches from the existing airbase at the Brazilian site, flying hundreds of miles before releasing the rocket directly above the equator — a global sweet spot — or at other optimal locations identified for each individual mission.

Being able to launch smallsats from the equator gives Virgin Orbit the ability to place those satellites in any orbit around the Earth for far less fuel, an advantage not available to spaceports at higher latitudes.

4 comments

China and Rocket Lab complete successful launches

8:51 am

Two launches this morning herald the upcoming busy launch schedule for the last few days of June.

First China launched from its Jiuquan interior spaceport an Earth observation satellite using its Long March 4C rocket. As is usual with China, the first stage crashed on land, though no details have been provided.

Next, Rocket Lab used its Electron rocket to send NASA’s CAPSTONE cubesat lunar probe on its way to the Moon. More information here.

CAPSTONE is currently in low-Earth orbit, and it will take the spacecraft about four months to reach its targeted lunar orbit.

…CAPSTONE is attached to Rocket Lab’s Lunar Photon, an interplanetary third stage that will send CAPSTONE on its way to deep space. Shortly after launch, Lunar Photon separated from Electron’s second stage. Over the next six days, Photon’s engine will periodically ignite to accelerate it beyond low-Earth orbit, where Photon will release the CubeSat on a ballistic lunar transfer trajectory to the Moon. CAPSTONE will then use its own propulsion and the Sun’s gravity to navigate the rest of the way to the Moon. The gravity-driven track will dramatically reduce the amount of fuel the CubeSat needs to get to the Moon.

Once at the Moon, the spacecraft will enter a polar orbit varying from 1000 to 43,500 miles from the surface, with its prime mission to test operations in that lunar orbit.

Not only did NASA hire a private company, Rocket Lab, to launch it, the agency also hired a private company, Terran Orbital, to build it.

The leaders in the 2022 launch race:

26 SpaceX
21 China
8 Russia
4 Rocket Lab

American private enterprise still leads China 36 to 21 in the national rankings, and the entire world combined 36 to 34.

For the rest of June, the American companies SpaceX, Virgin Orbit, and ULA all have planned launches, as well as India. If all succeed, that would put the total launches in the first half of ’22 at 74, a pace that would almost reach 150 launches by the end of the year, smashing the annual record set last year. The U.S.’s pace in turn is likely to exceed the number of launches it completed in all of ’22 in July, with the possibility it could complete 75-80 launches by the end of the year, exceeding the U.S. annual record of 70 set in 1966.

One comment

Did pieces of a Chinese upper stage land in middle of Mediterranean last week?

11:44 pm

According to a tweet from a Twitter account that specializes in reporting on the Chinese space program, at least one piece of the upper stage from the Long March 2F rocket that launched the present Tiangon space station crew on the Shenzhou-14 crashed into the middle of Mediterranean Sea when the stage’s orbit decayed.

Most parts burned during the reentry while small debris splashed in Mediterranean Sea around E5.2° N39.1°

According to both this Twitter site as well as the Aerospace Corporation’s re-entry site, the event occurred on June 20, 2022. The latter site however says the stage burned up over the Atlantic, though it also indicated a one hour margin of error both before or after that time. If the stage thus stayed up just a bit longer, its orbit would have brought it down exactly where the former site states.

If this is so, it indicates that the Chinese either could not or made no effort to control the de-orbit, something that should be standard for any upper stage that has mass that could hit the ground.

Hat tip from reader Jay.

One comment

A thick and syrupy flow on Mars

1:06 pm

A thick and syrupy flow on Mars
Click for full image.

Overview map

Cool image time! The photo above, rotated, cropped, and reduced to post here, was taken on March 5, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists label as a “viscous flow feature,” which is another way of saying the flow was thick and syrupy.

Nor is such a flow unusual in this area of Mars. It is located in a region of chaos terrain dubbed Protonilus Mensae, which is also the central mensae region in the 2,000-mile-long strip in the northern mid-latitudes of Mars I label glacier country. The overview map above of Protonilus Mensae — covering about 500 miles in width — shows how common such flows are in this place. The black rectangles mark the locations of other cool images I have featured, as follows:

The red rectangle indicates the location of today’s cool image.

The glacial aspect of everything in this region is even more emphasized by the wider view provided by MRO’s context camera below.
» Read more

One comment
1 … 152 153 154 155 156 … 498