Tag: engineering

Virgin Galactic losses 3x higher than last year

9:30 am

Even as Virgin Galactic has announced a contract with Axiom to fly a zero gravity suborbital training flight for one of its astronauts, the company also posted its 2021 third quarter statement, revealing losses three times higher than the previous year.

The company posted a net loss of $146 million for the three months ended Sept. 30, compared with a $48 million net loss in the same period last year. The widened loss was in part driven by increased research and development cost, which came at $97 million in the June-September quarter, three times higher than last year.

The company posted a net loss of $146 million for the three months ended Sept. 30, compared with a $48 million net loss in the same period last year. The widened loss was in part driven by increased research and development cost, which came at $97 million in the June-September quarter, three times higher than last year.

Quarterly revenue was only $767,000, down 70 percent from a year ago. Virgin Galactic hasn’t started commercial service of its suborbital spaceflight. The company currently makes money by taking deposits for future flights and providing engineering services to other companies.

Company officials still say that it will begin flying customers in the second quarter of ’23, as promised, though it also appears that the demand for its business has plummeted. At the same time, it reports it has $1.1 billion in its coffers for future development.

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Orbital tug company signs launch agreement with German rocket startup Isar Aerospace

9:24 am

The German rocket startup company, Isar Aerospace, has now signed a launch agreement with a French orbital tug company, Exotrail, to put multiple tugs into orbit over a five year period.

The companies announced Nov. 3 they signed a launch services agreement to launch Exotrail’s spacevan vehicle on Isar’s Spectrum rocket on multiple missions between 2024 and 2029. The launches will take place from Andøya, Norway, and Kourou, French Guiana. The companies did not disclose a specific number of launches or the value of the agreement.

Exotrail will apparently act as the agent to get the satellite customer by providing that customer transportation to the desired orbit after deployment from Isar’s rocket.

This is the second orbital tug launch contract that Isar has won, with the first from the Italian company D-Orbit. Both deals will fly on Isar’s rocket Spectrum, which it hopes to launch for the first time next year.

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Remains or DNA samples of numerous Star Trek actors/creators to be sent into space

9:17 am

Because the space burial company Celestis has now made agreements to fly into space the remains or DNA samples of so many actors or creators from the classic Star Trek television series on its next burial flight, it has named that flight its “Enterprise Mission.”

Slipping the gravitational bonds of Earth early next year, the Enterprise Flight will blast off in early 2023 using United Launch Alliance’s Vulcan rocket carrying additional cremated remains and DNA samples of “Star Trek” creator Gene Roddenberry, his wife Majel Barrett Roddenberry, “Star Trek” engineer James “Scotty” Doohan, and “2001: A Space Odyssey” VFX wizard Douglas Trumbull.

The Enterprise Flight’s trajectory will send the spacecraft roughly 93 million miles to 186 million miles (150 million to 300 million kilometers) into deep space beyond our familiar Earth-moon system. Celestis’ memorial mission intends on launching over 200 space burial flight capsules comprised of cremated ash remains, special messages, mementos and DNA samples from a range of international customers headed towards the great mystery of interplanetary space.

The flight will also include the remains or DNA samples from special effects artist Greg Jein, the series original associated producer Robert H. Justman, and actors Nichelle Nichols and DeForest Kelly.

What makes this burial flight especially unique is that the cremated remains and DNA samples will apparently be on a part of the Vulcan rocket that will escape Earth orbit and enter solar orbit.

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Long March 5B core stage crashes in Pacific

8:47 am

According to a tweet from the U.S. Space Force, the out-of-control core stage of China’s Long March 5B rocket has come down in the Pacific Ocean sometime around 4 am (Mountain).

#USSPACECOM can confirm the People’s Republic of China Long March 5B #CZ5B rocket re-entered the atmosphere over the south-central Pacific Ocean at 4:01am MDT/10:01 UTC on 11/4.

The exact location has not yet been revealed, nor do we know yet if any pieces landed on any habitable islands. The odds however of the re-entry causing any damage or injury now appears nil, which is a fortunate thing considering the risks China asked everyone else to take.

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Watching Rocket Lab’s launch and attempt to recover its first stage

8:34 am

In its scheduled launch today, Rocket Lab will attempt to recover the first stage of its Electron rocket, using a helicopter to snatch its parachute as it descends slowly over the ocean. This will the second attempt to do so, the first time failing after capture when the helicopter pilot decided to release the stage due to unexpected stresses and vibrations.

I have embedded the live stream below. The launch is presently scheduled for around 10:30 am (Pacific).
» Read more

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Perseverance leaps forward

12:48 pm

Perseverance's view on November 3, 2022 (Sol 606)
Click for full resolution. The original images can be found here and here.

Overview map
Click for interactive map.

Cool image time! After spending several weeks at one location at the base of the delta that flowed into Jezero Crater eons ago, the science team today put the rover Perseverance into high gear, programming it to move 684 feet in one leap forward. The move worked, so that Perseverance has now climbed up onto a terrace of that delta so that it sits at the base of one of the hills that forms the delta’s head. The panorama above shows that hill. I estimate that hill is about thirty feet high, give or take 50%.

The blue dot on the map to the right shows the rover’s position. The yellow lines show the area viewed in the panorama above. The green dot shows the location of the helicopter Ingenuity.

It is almost certain that the science team will get another core sample from this location, as it is at least one layer higher on the delta, thus providing new geology for that core to document. I am guessing unfortunately. Unlike the Curiosity science team (which posts updates at least one to three times a week), the Perseverance science team posts updates at best only once a week, if that, and those posts have rarely provided information about the team’s future plans.

The panorama above is cool, but what prompted this post is the image below that the rover took after arriving at this location.
» Read more

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Sunspot update: The pause in the ramp up to solar maximum continues

11:34 am

NOAA has once again published its monthly update of its monthly graph that tracks the number of sunspots on the Sun’s Earth-facing hemisphere. Below is that November graph, annotated by me with some additional details added to provide context.

Though sunspot number continued to be much higher than the prediction (almost double), October saw almost exactly the same number of sunspots as seen in September, which is why this new graph seems almost identical to last month’s.

In other words, the pause in the ramp up to solar maximum, first noted in August, continues.
» Read more

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Travel agency buys two Space Perspective high altitude balloon flights

10:18 am

Space Perspective's Neptune Capsule
Graphic of Space Perspective’s Neptune capsule.

The travel agency Cruise Planners has reserved two future 20-mile-high flights on the high altitude balloon Spaceship Neptune, being built by the Florida-based company Space Perspective.

Cruise Planners has reserved two full capsules scheduled to fly in 2025 & 2027 respectively on Spaceship Neptune.

Spaceship Neptune will differ from other spacecraft by being attached and secured to the SpaceBalloon for the entirety of the flight, making it a safe and seamless journey for the traveler. Other vessels separate mid-flight and transfer to different flight systems. According to Space Perspective, Spaceship Neptune will be lifted to space by the SpaceBalloon, powered by renewable hydrogen with no rockets and no carbon footprint. Guests won’t have the jarring blastoff that is typical of space travel, but instead will ascend steadily at 12 mph, making the experience accessible for anyone who is able to fly with a commercial airline.

Space Perspective is one of three balloon companies now planning such high altitude flights. Ticket prices will range from $50K to $125K, depending on company. At the moment Space Perspective is charging the most, but expect that to change as the competition heats up.

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Mengtian moved to its permanent port on Tiangong-3

10:01 am

Tiangong-3 station, when completed

Chinese engineers today successfully shifted the new Mengtian module from its docking port to its permanent port to the side, thus completing the assembly of the major components of the Tiangong-3 space station. Shortly thereafter the six astronauts on board the station opened the hatch and entered the module.

The graphic to the right shows the station’s final arrangement, T-shaped. The station however is not fully complete, as the large vertical solar panels have not yet been installed. Based on past station work, these will probably have to be shipped up later, and installed during space walks.

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NASA delays first manned Starliner mission again

9:53 am

NASA today announced that it has rescheduled the first manned demo mission of Boeing’s Starliner capsule to ISS from February to April, 2023.

The agency attributes the two month delay to scheduling conflicts with other visiting spacecraft at ISS. This might be true, but it also could be that Boeing wanted a little extra time to finish out the work it still needs to do to fix the anomalies that occurred on the unmanned demo mission, as well preparing the new capsule for launch.

This flight will carry two astronauts to ISS for about two weeks. The press release also noted this interesting tidbit:

The previously flown crew module, named Calypso, will be connected to a new service module later this year.

Apparently Boeing has decided to give names to these capsules, like SpaceX has. It also appears that the company and NASA are satisfied enough with the condition of the capsule after flying the unmanned demo flight to use it again for a manned mission.

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Crash prediction for Long March 5B core stage narrows

9:44 am

Crash prediction
Click for original image.

List of the largest uncontrolled re-entries

This morning’s report by the Aerospace Corporation has narrowed the crash time and location for China’s out-of-control Long March 5B core stage to six orbits, about 8 hours, on November 4, 2022, with the prediction centered over a point in the middle of the Indian Ocean.

The company’s graphic to the right shows the orbital tracks. Note that this prediction puts many habitable locations under risk, including parts of the United States, Spain, Africa, and Australia.

Since the crash is now expected tomorrow, expect further updates later today.

The second graphic to the right has also been created by the Aerospace Corporation. It shows the top 20 largest man-made objects that have fallen out-of-control from orbit. Four of the top six were dropped on the world by China, all within the past two years. All but one of the others occurred prior to 1987, before the U.S. and Russia took positive action to prevent such things. The one exception, Phobos-Grunt, was an unexpected failure, its rocket putting it into an unstable orbit rather than sending it to Mars.

China, like the U.S. and Russia, has signed the Outer Space Treaty. That treaty requires each signatory to control the objects it puts in space, and makes it liable for any damage caused by such objects. The U.S. and Russia have both tried very hard to abide by that treaty. China however has thumbed its nose at it.

We must wonder what China will do if this core stage kills someone when it comes down tomorrow.

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American freedom sets a new yearly record for rocketry

11:08 pm

Liberty enlightens the world
Liberty has now also enlightened the exploration of space

Capitalism in space: In 1966, more than a half century ago, the United States government was in a desperate space race to catch up with the communist Soviet Union, which for the previous decade had been first in almost every major achievement in space, from launching the first orbital satellite, the first manned mission, the first two- and three- manned missions, and the first spacewalk.

In 1966, the NASA and the U.S. military successfully launched 70 times in their effort to catch up, a number that has remained the record for more that five decades as the most American launches in a single year.

All but one of those seventy launches were either for NASA or the military, paid for and built not for profit but for achieving the political ends of the federal government. Many of those seventy launches were also short duration technology test satellites, whose purpose once achieved ended those programs.

By the end of the 1960s, this aggressive effort had paid off, with the U.S. being the first to land humans on the Moon while matching or exceeding the Soviets in almost every major technical space challenge. The need for such an aggressive government launch program vanished.

Thus, for the next half century, the United States rarely exceeded thirty launches in a single year. This low number was further reduced by the decision in the 1970s by the federal government to shut down the entire private launch industry and require all American manned and satellite payloads to be launched on NASA’s space shuttle.

Come 2011 and the retirement of the space shuttle, all this finally changed. The federal government began a slow and painful transition in the next decade from building and launching its own rockets to buying that service from the private sector. It took awhile, but that transition finally allowed the rebirth of a new American private launch industry, led by SpaceX and its Falcon 9 rocket.

Tonight, that SpaceX Falcon 9 rocket completed the 71st launch in 2022, breaking that 1966 record by placing in orbit a commercial communications satellite. And it did it with almost two months left in the year, guaranteeing that the record has not only be broken, it will be shattered.
» Read more

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Freefall: an antenna company for space

3:43 pm

Freefall: Antennas for Space!

Last week I had the opportunity to tour the offices space-based antenna startup Freefall, another one of Tucson’s many space-related companies.

Not surprisingly (and probably to the company’s credit), the offices and facility were themselves not that impressive. Essentially it was an open space with some areas reserved for desks and workers, and other areas where engineers could do some antenna construction and testing. In one corner was what the company’s CEO, Doug Stetson, labeled “their antenna graveyard,” past antenna experiments that were no longer needed or in use.

However, like all of these new independently-owned small aerospace companies popping up worldwide now that western governments have given up control of their space programs, what makes this company stand out is the creative innovations — both in design and manufacturing — that it brings to its products. In the case of Freefall, those products are all kinds of antennas, designed for all kinds of space-related uses.

First, there is design. The key to Freefall’s business model is its spherical dish antenna design.
» Read more

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Curiosity begins a detour

12:02 pm

Panorama taken November 2, 2022 by Curiosity
Click for full image.

Overview map
Click for interactive map.

The science team running the Curiosity rover on Mount Sharp on Mars have decided to take the rover on a detour. As shown in the overview map to the right, rather than continue climbing directly up the mountain in the canyon dubbed Gediz Vallis, they have turned the rover to the west in order to put it back on its original planned route, though traveling in the opposite direction. The goal is to get to Gediz Vallis Ridge, which the rover attempted to reach by crossing the Greenheugh Pediment back in the spring, but was forced to retreat because the ground was simply too rough for the rover’s wheels.

From their October 31st update:

We are now officially on our detour, a short round trip to image and capture geochemistry of the “Gediz Vallis ridge” up on the pediment, before coming back down to the “Marker Band valley” and rejoining the MSAR (Mount Sharp Ascent Route). This detour will allow us to access some of the area we’d planned to visit before getting turned around by the ‘gator-back’ terrain on the Greenheugh pediment. For this part of the campaign, we are prioritizing driving, getting to our destination as fast as we can, but imaging as we go and marking areas of interest for contact science as we come back down.

The panorama above, cropped and reduced to post here, shows the rover’s view uphill to get to the ridge. The blue dot marks its present position. The yellow lines mark the approximate area viewed by the panorama above.

I think the rover’s path will take it up through the saddle between the two small peaks on the left. The science team is likely hoping that once they get up over that saddle, the terrain to get to the ridge will be smoother and less treacherous than the very broken and rocky surface of the Greenheugh Pediment.

This route also appears to also get them up on the marker band more safely. That band, marked by the white arrows, is a distinct smooth layer found in many places on the flanks of Mount Sharp.

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The crash of China’s Long March 5B core stage: first rough prediction

10:35 am

Long March 5B reentry prediction as of 11/2/22

The Aerospace Corporation has made its first rough estimate of the uncontrolled reentry of the core stage of China’s Long March 5B rocket that launched the Mengtian module to its Tiangong-3 space station on October 31st.

The prediction at present is very uncertain, covering about 20 orbits (about 30 hours) centered on November 5, 2021 over the Atlantic Ocean northeast of Brazil, as shown in the graphic to the right. Though this prediction will eventually narrow down to less than one full orbit, it will never be possible to predict in advance the core stage’s exact impact point. As the margin of error shrinks, the predictions will come more frequently.

At this moment, however, the core stage’s orbit crosses over most of the habitable areas of the Earth, and thus all those regions are under threat.

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Two Saudi passengers to fly on Axiom’s second commercial flight to ISS

10:21 am

According to one NASA official, Axiom now plans on launching two as yet unnamed Saudi passengers on AX-2, its second commercial flight to ISS scheduled to launch in May 2023 on a Dragon capsule.

The names of the two Saudis on the flight have not been released, she said, but that “we are working very hard with them on training already.” A slide for her presentation noted the two would be named after formal approval by the ISS program’s Multilateral Crew Operations Panel. That slide also stated that crew training for the mission started Oct. 17.

The Saudi Space Commission and Axiom Space separately announced Sept. 22 plans to fly two Saudi citizens on a future Axiom Space mission. However, while it was widely rumored the two would fly on Ax-2, neither announcement stated a specific mission. The Saudi statement said that one of the two people would be a woman but did not disclose how the astronauts would be selected.

Neither Axiom nor the Saudis have revealed the ticket price, though it probably runs somewhere in the range of $20 to $50 million per ticket, based on past known purchase prices by NASA and others.

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Rocket Lab to attempt 1st stage recovery on November 4th launch

10:15 am

Rocket Lab announced yesterday that it will make its second attempt to catch the first stage of its Electron rocket using a helicopter during its next launch on November 4, 2022.

Using a modified Sikorsky S-92 helicopter to catch and secure the rocket by its parachute line, Rocket Lab will bring the captured stage back to its Auckland Production Complex to be processed and assessed by engineers and technicians for possible re-use.

This Electron recovery effort follows the catch of an Electron first stage during Rocket Lab’s first helicopter recovery attempt on the “There And Back Again” launch in May, and the recovery attempt for this mission will follow the same concept of operations as the previous launch.

In the May recovery attempt, the helicopter caught the stage, but then released it almost immediately because of unexpected stresses on the helicopter. If Rocket Lab is successful this time, it will be only the second private rocket company to recover a first stage capable of reuse, after SpaceX.

The launch itself will take place at 10:15 am (Pacific). When the live stream is available I will embed it on Behind the Black.

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InSight status update: still alive!

9:45 pm

InSight's daily power levels through October 31, 2022

UPDATE: JPL has released a press release, outlining the steps the InSight team will take to shut the mission down. Key quote:

NASA will declare the mission over when InSight misses two consecutive communication sessions with the spacecraft orbiting Mars, part of the Mars Relay Network – but only if the cause of the missed communication is the lander itself, said network manager Roy Gladden of JPL. After that, NASA’s Deep Space Network will listen for a time, just in case.

There will be no heroic measures to re-establish contact with InSight. While a mission-saving event – a strong gust of wind, say, that cleans the panels off – isn’t out of the question, it is considered unlikely.

Original post:
—————–

Another update on the power levels on the Mars lander InSight was released today, and is shown on the graph to the right.

As of October 31, 2022, InSight is generating an average between 280 and 290 watt-hours of energy per Martian day, or sol. The tau, or level of dust cover in the atmosphere, was estimated at 1.33 (typical tau levels outside of dust season range from 0.6-0.7).

Though the dust level in the atmosphere has dropped, it still is high. Moreover, there is no sign of any clearing of dust from InSight’s solar panels. During the press conference late last week announcing the discovery of impact craters using InSight’s seismometer, the science team gave the lander no more than six weeks of life. One of those weeks has now ticked off.

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Streaks on the Moon

12:48 pm

Streaks on the Moon
Click for full image.

Cool image time! The photo to the right, reduced and enhanced to post here, is an oblique view taken by Lunar Reconnaissance Orbiter (LRO) of the rays that were created when four million years ago an object smashed into the Moon’s far side and produced the 13.75 mile-wide Giordano Bruno crater.

Rays are formed as material ejected from an impact event slams into the surface and churns up local material. Rays are bright because they expose fresh material from depth (both the incoming material and locally churned soil). What is fresh material? Over time the lunar surface is impacted by micrometeoroids and bombarded by radiation; both processes work to darken the surface. The dark “mature” layer at the surface is often only about 50 cm (20 inches) thick, so energetic impacts can easily bring up fresh material from the subsurface. Eventually, the bright rays darken and fade into the background as the surface matures.

In this image, you can see where the ejecta blocks from Giordano Bruno hit the surface, creating a secondary crater, which dug up local material and spread that bright material downstream (so to speak).

The image itself is 4.78 miles wide, at its center, and was snapped from an altitude of 66 miles.

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Japanese private lunar lander HAKUTO-R now scheduled for launch on November 22nd

9:45 am

The private lunar lander HAKUTO-R, built by the Japanese company Ispace, has now been scheduled for a November 22, 2022 launch on a Falcon 9 rocket.

The launch of the first commercial lunar lander mission to attempt a landing on the Moon was originally scheduled between November 9 -15. However, ispace stated that after consulting with SpaceX, the new tentative launch date would be moved to November 22 because it “allows for best preparation for the mission when considering the fuel-loading schedule for the lander and launch date availability.” SpaceX has a busy schedule at the Cape and NASA still has the Artemis 1 launch scheduled for November 14.

HAKUTO-R’s primary mission is to test the lander. However, it also includes several customer payloads, the most significant of which is the Rashid rover from the United Arab Emirates. Rashid, which is about the size of a Radio Flyer red wagon, will operate for one lunar day, about two weeks. While its main mission is to test the engineering and to train the engineers who built it, it will have two cameras for taking pictures. In addition, on its wheels are test adhesive patches of different materials, designed to see how each material interacts with the Moon’s abrasive dust.

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Astronomers discover a new large potentially dangerous near-Earth asteroid

9:36 am

Using a variety of ground-based telescopes, astronomers have discovered three new near-Earth asteroids orbiting the Sun but inside Earth’s orbit, with one of these asteroids having the possibility of one day in the future impacting the Earth.

An international team using the Dark Energy Camera (DECam) mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory in Chile, a Program of NSF’s NOIRLab, has discovered three new near-Earth asteroids (NEAs) hiding in the inner Solar System, the region interior to the orbits of Earth and Venus. This is a notoriously challenging region for observations because asteroid hunters have to contend with the glare of the Sun.

By taking advantage of the brief yet favorable observing conditions during twilight, however, the astronomers found an elusive trio of NEAs. One is a 1.5-kilometer-wide asteroid called 2022 AP7, which has an orbit that may someday place it in Earth’s path. The other asteroids, called 2021 LJ4 and 2021 PH27, have orbits that safely remain completely interior to Earth’s orbit. Also of special interest to astronomers and astrophysicists, 2021 PH27 is the closest known asteroid to the Sun. As such, it has the largest general-relativity effects of any object in our Solar System and during its orbit its surface gets hot enough to melt lead.

You can read their paper here [pdf].

2002 AP7 is the largest such potentially dangerous asteroid discovered in eight years. Its present orbit however never brings it closer to the Earth than 4.4 million miles, and it will be many thousands of years before that orbit might result in an impact. This of course doesn’t prevent foolish mainstream news outlets like the New York Times to label it a “planet-killer.”

The importance of this study however is that it underlines the possibility that there might be other such asteroids lurking close to the Sun that are difficult to spot. This is a blind spot in our asteroid surveys that needs to be eliminated.

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Lockheed Martin invests $100 million in startup satellite maker Terran Orbital

9:14 am

Lockheed Martin has now invested $100 million in the startup smallsat-maker Terran Orbital, which has already been building satellites of a wide variety for customers.

Under the deal, which runs through 2035, the smaller Florida-based firm will build SAR and other advanced payloads, as well as satellite sub-assemblies, for the aerospace behemoth, Terran said in a press release today. These include electro-optical, hyperspectral, infrared and secure communication payloads, as well as things like star trackers and flight computers.

With this deal, Terran has also decided that it will no longer launch its own radar constellation, as that constellation would have competed directly with its radar satellite customers. Instead, it will make its radar satellite for others, including Lockheed Martin.

As an example of the variety of smallsats Terran Orbital has been building, it manufactured the smallsat lunar orbiter CAPSTONE for NASA, now on its way to the Moon but being operated for NASA by a different private company, Advanced Space.

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Orbex signs 50-year lease at Sutherland spaceport

9:03 am

The British startup rocket company Orbex has signed a 50-year lease to operate its own launchpad at the Space Hub Sutherland spaceport in Scotland.

The company will lease Space Hub Sutherland from a local development agency for an initial period of 50 years with an option to extend for a further 25 years. Orbex will soon commence construction at the 10-acre launch site on the A’Mhoine peninsula in Sutherland. The bulk of the construction work will be contracted out to technology solutions company Jacobs, which also does a lot of work for NASA.

The company hopes to launch its Prime rocket in ’23. At present it is testing launch operations of a prototype on its launchpad. All told, Orbex has raised a little over $100 million in private investment capital.

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Mengtian module docks with China’s Tiangong-3 space station

8:54 am

Tiangong-3 station, when completed

The new Mengtian module has docked with the main port of China’s Tiangong-3 space station.

The graphic to the right shows the planned design of the station. Mengtian however is not yet in its side port as shown, but in the main docking port in line with the core module where a Shenzhou crew capsule is shown docked. At some point soon the astronauts on board will use a small robot arm to move Mengtian from the main port to its side port. (This system is very similar to one the Russian’s used on Mir.)

Furthermore, the large vertically oriented solar panels have not yet been installed on the station. These will likely need to be delivered, and require spacewalks to deploy.

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Falcon Heavy launches successfully for 1st time since 2019

8:16 am

Capitalism in space: SpaceX today successfully put a military reconnaissance satellite using its Falcon Heavy rocket, its first launch since 2019.

The two side boosters and core stage all made their first flight. The core stage was intentionally not recovered, as it needed to use all its fuel for getting the satellite to its orbit. The two side boosters successfully landed at SpaceX’s two landing sites at Cape Canaveral.

The leaders in the 2022 launch race:

50 SpaceX
47 China
18 Russia
8 Rocket Lab
7 ULA

American private enterprise now leads China 70 to 47, though it still trails the rest of the world combined 74 to 70.

This year’s 70 successful launches ties the previous high for the United States in a single year, set in 1966. With two months still left in the year, it looks like that record will be broken, by a lot.

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The knobby floor of a Martian crater

5:21 pm

The knobby floor of a Martian crater

Cool image time! The picture to the right, rotated, cropped, reduced, and enhanced to post here, was taken on July 20, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a small portion of the knobby floor of a 70-mile-wide ancient and eroded unnamed crater in the southern cratered highlands of Mars.

Why knobby? Usually such terrain on Mars signifies an very ancient and well eroded region of chaos terrain, its knobs the leftover worn remains of ancient mesas cut by eons of glacier flow.

If this is so, the location as shown in the overview map below suggests if there were ever any glaciers — or any near surface ice — at this location, it had to be a very long time ago.
» Read more

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CAPSTONE makes course correction, now on target for lunar orbital insertion on November 13th

1:39 pm

Engineers have successfully overcome the valve issue that had caused the CAPSTONE lunar probe to tumble, and have made a subsequent mid-course correction that has put the spacecraft on target for entering lunar orbit on November 13, 2022, as planned.

The CAPSTONE spacecraft successfully completed a trajectory correction maneuver on Thursday, Oct. 27, teeing up the spacecraft’s arrival to lunar orbit on Nov. 13.

CAPSTONE is no longer in safe mode following an issue in early September that caused the spacecraft to spin. The team identified the most likely cause as a valve-related issue in one of the spacecraft’s eight thrusters. The mission team will design future maneuvers to work around the affected valve, including the two remaining trajectory correction maneuvers scheduled before CAPSTONE’s arrival to orbit at the Moon.

Though it appears the CAPSTONE team has figured out how to deal with that malfuncting valve, it is unclear what the long-term ramifications of that valve will be. If it is still leaking it likely means the mission will be shortened because of loss of fuel, as well as the need to use more to compensate.

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Distant interacting galaxies

11:25 am

Interacting galaxies
Click for original image.

Cool image time! The picture to the right, cropped and reduced to post here, was taken by the Hubble Space Telescope as part of a survey of known “weird and wonderful galaxies.” This particular pair is dubbed Arp 248, and is estimated to be about 200 million light years away.

Two spiral galaxies are viewed almost face-on; they are a mix of pale blue and yellow in colour, crossed by strands of dark red dust. They lie in the upper-left and lower-right corners. A long, faint streak of pale blue joins them, extending from an arm of one galaxy and crossing the field diagonally. A small spiral galaxy, orange in colour, is visible edge-on, left of the lower galaxy.

The connecting stream indicates that these galaxies are interacting with each other, gravity drawing stars and gas from the upper galaxy towards the lower.

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