Tag: spaceflight

SpaceX successfully launches another 15 Starlink satellites

9:07 pm

I hope this doesn’t bore you: SpaceX tonight successfully used its Falcon 9 rocket to place another 15 Starlink satellites into orbit, lifting off from Vandenberg Space Force Base in California.

The first stage completed its fifth flight, landing successfully on a drone ship in the Pacific. The two fairings each completed their sixth flight. As of posting the satellites have not yet deployed.

The leaders in the 2023 launch race:

54 SpaceX
31 China
10 Russia
6 Rocket Lab
6 India

American private enterprise still leads China in successful launches 62 to 31, and the entire world combined 62 to 52, while SpaceX by itself leads the world (excluding American companies) 54 to 52.

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Boeing delays first manned Starliner flight again, until March of 2024

4:21 pm

Because of both parachute and wiring issues in its Starliner capsule, Boeing revealed today that it is delaying the first manned Starliner flight again, until March of 2024, so that it has time to change and test the parachutes as well as remove the flammable tape inside the capsule.

The company had been hoping to finally fly that first manned flight last month, but was forced to cancel when in June it discovered two shocking problems. First the connections between the parachutes and the capsule were too weak, and second, for some reason engineers had used tape to protect the capsule’s wiring that was too flammable and had to be replaced or covered somehow.

Boeing is taking the tape off in places where it’s easy and safe to do so and considering other remediation techniques, such as protective barriers or coatings over it, in trickier spots, Nappi said.

The parachute work is multifaceted as well. For example, Boeing has modified the soft link design to make it stronger, and the new version is being manufactured now, Nappi said. The company also decided to swap out Starliner’s parachute system, putting a new version slated for the first operational mission on board for [the crew flight test]. The new soft links will be incorporated into the new chutes, which will get to strut their stuff during a drop test soon. “We expect that the drop test will occur in mid to late November,” Nappi said. “That’s what the planning indicates at this point, and we’ll watch that closely.”

The seemingly endless number of mistakes and bad engineering that we have seen during the development of Starliner speaks very badly of Boeing in almost every way possible. These last two problems are especially egregious. Neither should have ever happened, and if so should never had been unnoticed until a mere month before launch and years into the project.

It must also be noted that March ’24 is merely a target date. Don’t bet the house on it happening then.

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Russia launches new GPS-type Glonass satellite

4:02 pm

Russia today used its Soyuz-2 rocket to place a new GPS-type Glonass satellite into orbit, lifting off from its Plesetsk spaceport in the northern Russian.

Apparently this launch resulted in its lower stages falling in areas in Russia not normally used as a drop zone. No word on whether they landed near habitable areas.

The leaders in the 2023 launch race:

53 SpaceX (with a launch planned for tonight, live stream here.)
31 China
10 Russia
6 Rocket Lab
6 India

American private enterprise still leads China in successful launches 61 to 31, and the entire world combined 61 to 52, while SpaceX by itself leads the world (excluding American companies) 53 to 52.

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Curiosity under the shadow of a Martian mountain

12:18 pm

Panorama showing Kukenan on August 8, 2023
Click for full resolution. For original images, go here and here.

Overview map
Click for interactive map

Another cool image to start the week! The panorama above was created using two navigation images taken by Curiosity on August 8, 2023. It looks almost due west at the dramatic western wall of 400-foot-high Kukenan butte.

The blue dot on the overview map to the right marks Curiosity’s present location. The yellow lines indicate approximately the area covered by the panorama above. The red dotted line indicates the rover’s planned route.

Recently JPL issued a press release touting the efforts of its engineers to overcome the very steep and rocky terrain that Curiosity is presently traversing, an effort that I have documented repeated in the past few months (see posts here and here). They had been trying to send Curiosity straight up the mountain, to no success, and finally decided to do what every hiker and trail-maker does routinely, do back and forth switchbacks to reduce the grade per step.

In June they headed slowly uphill going east. In July they turned back and worked their way uphill going west, heading back to the Jau crater complex to get a quick look at these craters, then turned again in August to head back east, slowly working uphill along the contour lines. As they do this the rover is moving closer and closer to Kukenan, the largest butte so far studied in the foothills of Mount Sharp.

This panorama is one of the best illustrations of the very complex geological history of Mars. Each layer signals a past cycle in Mars’ very cyclic history, created because of the red planet’s wide swings of rotational tilt over time. Once underground, these layers have become exposed because erosion over the eons has slowly removed the material that once buried it, leaving the butte behind.

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A ghostly bullseye galaxy

11:18 am

A ghostly bullseye
Click for original image.

A cool image to start the week! The picture to the right, cropped and reduced to post here, was taken by the Hubble Space Telescope as part of a survey scientists are doing using Hubble, attempting to get high resolution images of every galaxy within about 30 million light years of the Milky Way. Prior to this census Hubble had covered about 75% of these galaxies. This particular galaxy is called a lenticular galaxy.

Lenticular galaxies like NGC 6684 (lenticular means lens-shaped) possess a large disc but lack the prominent spiral arms of galaxies like the Andromeda Galaxy. This leaves them somewhere between elliptical galaxies and spiral galaxies, and lends these galaxies a diffuse, ghostly experience. NGC 6684 also lacks the dark dust lanes that thread through other galaxies, adding to its spectral, insubstantial appearance.

The unknown is whether this is the state of a galaxy prior to becoming a spiral, or it is what it looks like as it transitions from a spiral to an elliptical. This particular galaxy is likely the latter, as it lacks the dust, but this does not have to be the rule.

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Lockheed Martin opens factory to build smallsats on an assembly-line basis

10:41 am

Capitalism in space: As part of fulfilling a contract won from the Space Force, Lockheed Martin has now opened a new factory in Colorado expressly designed to build smallsats on an assembly-line basis.

Lockheed Martin’s 20,000-square-foot factory is located at the company’s Waterton campus near Denver, Colorado. It has six parallel assembly lines and capacity to manufacture 180 small satellites per year, Kevin Huttenhoff, Lockheed Martin’s senior manager for space data transport, told SpaceNews. The first satellites to be made at the facility are for the U.S. Space Force’s Space Development Agency. SDA plans to build a mesh network of hundreds of data transport and missile-detection sensor satellites in low Earth orbit.

Lockheed Martin in February 2022 won a $700 million contract to produce 42 communications satellites for SDA’s Transport Layer Tranche 1. The company in November 2020 also won a $187.5 million contract to manufacture 10 Transport Layer Tranche 0 satellites that are scheduled to launch later this month. The Transport Layer Tranche 1 satellites — projected to launch in late 2024 — will be made at the new factory. The Tranche 0 satellites were assembled at a different facility where Lockheed Martin manufactures Global Positioning System (GPS) spacecraft.

The multiple assembly lines allows the company to configure each for a different customer and satellite, with one for example producing smallsats for a military contract while another produces smallsats for a commercial customer.

Of all the big space companies, Lockheed Martin has made the most moves quickly adapting to the new space market of new rockets and small satellites. Not only has it built this facility, it has been an major investor in several new smallsat rocket companies, including Rocket Lab and ABL. It also opened its first assembly-line smallsat factory in 2017.

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SpaceX conducts static fire test of Superheavy and its launchpad systems

10:32 am

SpaceX yesterday conducted a static fire test of Superheavy and its launchpad systems at Boca Chica.

After a couple of hours of chilling the fuel lines, filling of the liquid oxygen and liquid methane tanks aboard Booster 9 began at T-Minus 67 minutes. The liquid oxygen tank was fully filled with the liquid methane only partially filled with what was required for the test.

After a smooth countdown, Booster 9 lit all 33 Raptor engines, however, 4 shut down early during the 2.74-second duration test. The test was intended to last 5 seconds.

The new water deluge system seemed to work as intended, albeit with a very short firing of the engines. Instead of a giant dust cloud that is usually formed after a static fire test, this test created a steam cloud that dissipated fairly quickly following the test.

The premature shutdown and the even earlier shut down of four engines suggests SpaceX still has kinks it needs to work out. No surprise. It will now probably switch out those four engines, analyze the test, and do it again. It will do so partly because it needs to before the orbital test flight, and partly because it can’t do that test flight because the FAA has still not issued a launch license.

I have embedded the video of that test below the fold.
» Read more

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ISRO releases first images of the Moon from Chandrayaan-3

10:23 am

The Moon as seen by Chandrayaan-3

India’s space agency ISRO yesterday released the first images taken of the Moon by Chandrayaan-3, soon after entering lunar orbit.

The picture to the right is a screen capture from the short movie the agency compiled from those images, available at the link. The pictures were taken on August 5th, during the engine burn that put the spacecraft into lunar orbit. A solar panel can be seen on the left, with the cratered lunar surface to the right.

Chandrayaan-3 is presently undergoing a series of engine burns to lower its orbit in preparation for a planned August 23rd lunar landing in the high southern latitudes of the Moon.

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SpaceX tonight successfully launches another 22 Starlink satellites

7:50 pm

SpaceX tonight successfully launched another 22 Starlink satellites, using its Falcon 9 rocket lifting off from Cape Canaveral.

The first stage completed its fourth flight, landing softly on a drone ship in the Atlantic. The two fairing halves completed their 8th and 10th flights respectively. As of posting the satellites have not yet been deployed.

The leaders in the 2023 launch race:

53 SpaceX
31 China
9 Russia
6 Rocket Lab
6 India

American private enterprise now leads China in successful launches 61 to 31, and the entire world combined 61 to 51, while SpaceX by itself leads the world (excluding American companies) 53 to 51.

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Chandrayaan-3 enters lunar orbit

9:38 am


Click for interactive map.

India’s Chandrayaan-3 spacecraft today successfully entered lunar orbit, where it will spend the next week or so slowly lowering its orbit in preparation for a landing attempt by its Vikram lander on August 23rd.

Chandrayaan-3 began a roughly 30-minute burn around 9:30 a.m. Eastern, seeing the spacecraft enter an elliptical lunar orbit, the Indian Space Research Organization (ISRO) stated via social media. “MOX, ISTRAC, this is Chandrayaan-3. I am feeling lunar gravity,” ISRO Tweeted. “A retro-burning at the Perilune was commanded from the Mission Operations Complex (MOX), ISTRAC, Bengaluru.”

The spacecraft will gradually alter its orbit with a burn to reduce apolune Sunday, Aug. 6. It will settle into a 100-kilometer-altitude, circular polar orbit on Aug. 17. From here, the Vikram lander will separate from the mission’s propulsion module and enter a 35 x 100-km orbit in preparation for landing.

If the landing attempt is successful, the Pragyam rover will roll off Vikram to operate for about two weeks on the lunar surface in the high southern latitudes of the Moon.

Meanwhile, the Russian lander Luna-25 will launch on August 10th. Since the rocket that launches it and engines it carries are larger than that used by Chandrayaan-3, it will likely land in Boguslawsky crater, before Vikram touches down nearby.

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Astra lays off 25% of workforce, mostly in its rocket departments

10:07 am

Astra revealed yesterday that it has laid off 25% of its workforce, with most of those jobs coming from those working of developing its rocket, in order to focus the company on its rocket engine business, the only area it at present has a chance of earning revenue.

The reallocation and layoffs are expected to delay testing of the under-development Rocket 4 and Launch System 2.0, Astra said. The affected employees worked in the company’s launch, sales and administration and “shared services” departments. Workforce reductions are expected to save the company more than $4 million per quarter beginning in the fourth quarter of this year.

Astra, which is facing dwindling cash reserves, is no doubt looking for a way to further reduce operating expenses while also bolstering its spacecraft engine business, the only business unit that currently has a near-term chance of generating revenue. The spacecraft engine technology is sourced from Astra’s acquisition of propulsion developer Apollo Fusion, which closed the day Astra went public in July 2021.

Indeed, Astra said that it had closed 278 committed orders of the Astra Spacecraft Engine product through the end of March, which totals around $77 million in contracts once the engines are delivered. A “substantial majority” of these orders will be delivered through the end of 2024, the company said.

What these actions mean is that Astra is no longer a rocket company. It might return eventually, but for now there is little chance it will resume launches for years.

It is interesting that this action was revealed only one day after a class-action lawsuit was dismissed by investors against the company for claiming that it would soon be launching 300 times per year.

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Engineers regain full control over Voyager 2

3:29 pm

A longshot effort by engineers has succeeded in re-establishing full communications with Voyager 2, launched in 1977 and flying outward at the edge of the solar system.

“The Deep Space Network used the highest-power transmitter to send the command (the 100-kw S-band uplink from the Canberra site) and timed it to be sent during the best conditions during the antenna tracking pass in order to maximize possible receipt of the command by the spacecraft,” Voyager project manager Suzanne Dodd told AFP. This so-called “interstellar shout” required 18.5 hours traveling at light speed to reach Voyager, and it took 37 hours for mission controllers to learn whether the command worked, JPL said in a statement.

The probe began returning science and telemetry data at 12:29 am Eastern Time on August 4, “indicating it is operating normally and that it remains on its expected trajectory,” added JPL.

Based on a weak signal received earlier, engineers were confident that the spacecraft was functioning in good order despite the loss in communications, and would automatically re-orient itself properly when it did an automatic reset in October. This attempt however fixed things now.

Regardless, the spacecraft probably only has a few more more years of operations before its nuclear powered source finally runs out sometime after 2025.

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A hiking paradise on Mars!

12:51 pm

A hiking paradise on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, sharpened, and annotated to post here, was taken on May 21, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows one of Mars’ more impressive mountains with the Sun somewhat low in the western sky, resulting in the long dark shadows on the eastern slopes.

The line is my quick attempt to mark the obvious route that would be taken along that ridge line to get from the bottom to the top. This could be a hiking trail, or a road. In either case, the elevation gain from the bottom of the ridge to the plateau on top would be about 3,900 feet in about a mile and a half, very steep for Earth — at approximately a 26 degree grade — but probably quite doable in the one-third Martian gravity.

The lower end of my proposed route however is hardly the bottom of the mountain. The slope, now alluvial fill made up of dust and debris from above, continues downhill for another 5,400 feet. All told, from top to bottom the elevation gain is about 9,300 feet over 8.5 miles.
» Read more

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Proposed exclusion zone restrictions revealed for new Sutherland spaceport in Scotland

10:35 am

A map of the proposed 50-square-kilometer exclusion zone that will be required for launches at the new Sutherland spaceport in Scotland has now been obtained by the Northern Times, which appears to be a local newspaper.

The zone would cover much of Melness Crofters’ Estate, and ironically it would also include a significant part of the neighbouring Eriboll Estate, owned by Danish entrepreneur Anders Holch Polvsen, who launched a failed legal challenge against the spaceport. Highland Council is in the process of finalising the details of the proposed restrictions which will then be put out for a 12-week public consultation and go before Highland councillors for final approval.

Ramblers Scotland, which promotes access to the outdoors, has said it will “carefully study” the final proposals.

Only during the launches does it appear the zone would be this large. Between launches the zone would be limited to a radius of 1.8 kilometers around the launchpads.

With twelve launches planned per year, this zone could seriously impact local activities, though how much is not clear. Not many people live in the area, and the land inside the zone is mostly used as grazing land or for recreational activities, many apparently organized by Ramblers Scotland. We should therefore expect some opposition to this plan when this zone is discussed during that 12-week public consultation time period.

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Scientists release infrared image of the Ring nebula, taken by Webb

10:23 am

The Ring Nebula, in false color by Webb
Click for original image.

Scientists yesterday released the first false-color infrared image of the Ring nebula taken by the Webb Telescope. That image, cropped to post here, is to the right. From the press release, which is heavy with platitudes but little information:

Approximately 2,600 lightyears away from Earth, the nebula was born from a dying star that expelled its outer layers into space. What makes these nebulae truly breath-taking is their variety of shapes and patterns, that often include delicate, glowing rings, expanding bubbles or intricate, wispy clouds. These patterns are the consequence of the complex interplay of different physical processes that are not well understood yet. Light from the hot central star now illuminates these layers.

Just like fireworks, different chemical elements in the nebula emit light of specific colours. This then results in exquisite and colourful objects, and furthermore allows astronomers to study the chemical evolution of these objects in detail.

It appears this image was produced using Webb’s near infrared instrument. Further data from its mid-infrared instrument has not yet been released. For a Hubble image of the Ring Nebula, in optical light that the human eye sees, go here.

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NASA agrees to let Axiom fly a fourth private manned mission to ISS

10:10 am

NASA and Axiom have now signed a new agreement allowing Axiom to fly a fourth private manned mission to ISS, tentatively scheduled for no earlier than August 2024.

Through the mission-specific order, Axiom Space is obtaining from NASA crew supplies, cargo delivery to space, storage, and in-orbit resources for daily use. The order also accommodates up to seven contingency days aboard the space station. This mission is subject to NASA’s pricing policy for the services that are above space station baseline capabilities.

The order also identifies capabilities NASA may obtain from Axiom Space, including the return of scientific samples that must be kept cold and other cargo, and the capability to use the private astronaut mission commander’s time to complete NASA science or perform tasks for the agency.

The company has already hired SpaceX to provide the transportation to and from ISS, using its Falcon 9 rocket and one of its fleet of four manned Dragon capsules.

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Despite good first images from Euclid, the orbiting telescope has a problem

10:05 am

Even though the first light images from Euclid have been sharp and exactly what astronomers want, the orbiting telescope designed to make a 3D map of billions of galaxies has an issue that will likely put some limits to that map.

When the telescope started booting up, ESA observers were concerned by the appearance of light markings on the first images relayed to Earth. This, it confirmed, was due to sunlight filtering into the telescope, “probably through a tiny gap”.

A correction to Euclid’s position was able to offset this issue. It means that while the ESA is confident Euclid will be fine to proceed with its mapping mission, particular orientations for the telescope may not be possible.

A limitation like this means that the telescope will not being able to look in some directions and get mapping images. Thus, the overall map will have gaps, though it appears at this moment that the scientists think those gaps will not seriously impact the telescope’s overall work. We shall see.

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Update on the technical progress at Boca Chica, preparing for the next Starship/Superheavy orbital test

9:59 am

Link here. Lots of progress had been made in getting the pad and the rocket ready for that next orbital test flight, with the first static fires tests of Superheavy using the launchpad’s new water deluge system are now expected in the coming week.

The company is also preparing additional prototypes of Superheavy and Starship for later orbital tests. even as it upgrades the assembly facilities, replacing temporary tents with actual buildings. More details, including videos, at the link.

Meanwhile, the only word from the FAA about SpaceX’s application for a launch permit has been a warning that it will not issue that permit until it is good and ready, suggesting the company should not expect to launch in August, as I have been predicting for months.

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The dry and mountainous terrain west of Jezero Crater

12:00 pm

The dry and mountainous terrain west of Jezero Crater
Click for original image.

Since my earlier update today about Perseverance and Ingenuity mentioned the very diverse and strange geology known to exist west of Jezero Crater and where the rover is eventually headed, I thought it worthwhile to post another cool image of that terrain.

The picture to the right, rotated, cropped, reduced and sharpened to post here, was taken on May 22, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled a “terrain sample” image, the location was likely chosen by the camera team in order to fill a gap in the camera’s schedule so that they can maintain its proper temperature. Having a gap that put the spacecraft over this region to the west of Jezero was however a great opportunity to get another look at this rocky, mountainous, and very parched terrain, located in Mars’ very dry equatorial regions.
» Read more

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Perseverance snaps new close-up of Ingenuity

10:28 am

Overview map
Click for interactive map.

Ingenuity as seen by Perseverance on August 2, 2023
Ingenuity as seen by Perseverance on August 2, 2023.
Click for original image.

Cool image time! With Perseverance and Ingenuity in the past week getting close together for the first time in months, the Perseverance team naturally turned its high resolution mast cameras at the helicopter. The picture to the right, cropped, reduced, and sharpened to post here, was taken on August 2, 2023 by the rover’s left mast camera, showing Ingenuity only about two hundred feet away.

The blue dot on the overview map above shows Perseverance’s present location, with the green dot marking Ingenuity’s. The picture to the right is therefore looking almost due south. The red dotted line indicates the rover’s planned route, moving towards Neretva Vallis, the gap in the rim of Jezero Crater from which the delta had flowed, eons ago. The rover’s goal is to eventually enter that gap and explore the very diverse and strange geology known to exist outside the crater to the west.

We should also expect even better images of Ingenuity in the next week. Its 54th flight is scheduled for today, in which the engineering team wants to send the helicopter on a simple straight up and down hop of sixteen feet in order to better “localize” the helicopter. With Perseverance less than two hundred feet away, its cameras should be able to assemble a great movie of that flight.

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New software detects its first potentially dangerous asteroid

9:32 am

New software designed to detect asteroids, developed for use with the Rubin Observatory presently being built in Chile, has successfully discovered its first potentially hazardous asteroid (PHA) using data from another smaller operational ground-based telescope.

The discovered asteroid is 600 feet long, large enough to pose a real threat should it ever hit the Earth. Fortunately, the data says that though its orbit can take it as close as 140,000 miles there is no impact likely in the foreseeable future.

When the Rubin telescope begins its planned ten year survey of the entire night sky in 2025, this software is expected to almost triple the number of known potentially-hazardous-asteroids, from 2,350 to almost 6,000.

Funded primarily by the U.S. National Science Foundation and the U.S. Department of Energy, Rubin’s observations will dramatically increase the discovery rate of PHAs. Rubin will scan the sky unprecedentedly quickly with its 8.4-meter mirror and massive 3,200-megapixel camera, visiting spots on the sky twice per night rather than the four times needed by present telescopes. But with this novel observing “cadence,” researchers need a new type of discovery algorithm to reliably spot space rocks.

Thus, the development of this new software.

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China’s Long March 4C launches weather satellite; SpaceX launches communications satellite

10:09 pm

Two launches this evening. First China used its Long March 4C rocket to put a weather satellite into orbit, lifting off from its Jiuquan spaceport in northwest China. No word on where the lower stages crashed within China.

SpaceX then used its Falcon 9 rocket to put an Intelsat commercial communications satellite into orbit, lifting off from Cape Canaveral. The first stage successfully completed its sixth flight, landing on a drone ship in the Atlantic. The two fairing halves completed their eighth and tenth flights respectively.

As of posting the satellites from both launches had not deployed.

The leaders in the 2023 launch race:

52 SpaceX
31 China
9 Russia
6 Rocket Lab
6 India

American private enterprise still leads China in successful launches 60 to 31, and the entire world combined 60 to 51, while SpaceX by itself leads the world (excluding American companies) 52 to 51.

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Voyager Space partners with Airbus to build its Starlab space station

12:00 pm

Voyager Space, one of the three companies with a contract from NASA to develop a commercial private space station, has now signed a partnership agreement with the European aerospace company Airbus to work together to build its Starlab space station.

The companies announced Aug. 2 the creation of a joint venture, also called Starlab, that will be responsible for the development and operation of the station. The joint venture builds upon an agreement announced in January where Voyager selected Airbus to provide technical support for the proposed station.

“This transatlantic venture with footprints on both sides of the ocean aligns the interests of both ourselves and Voyager and our respective space agencies,” said Jean-Marc Nasr, head of space systems at Airbus, in a statement. “Together our teams are focused on creating an unmatched space destination both technologically and as a business operation.”

Though no specifics of the deal were released, Voyager will continue to retain 51% control. It appears that Voyager’s goal with this deal is to get its foot in the door of Europe. With ESA no longer considering doing any work on the space stations of either China or Russia, it needs a place to go after ISS is retired. By signing up Airbus as a partner Voyager makes Starlab the most likely go-to station for these European companies and governments.

Isn’t private enterprise and freedom wonderful? Without even trying Europe is going to get a space station of its own, and it will do it by hiring this private consortium of American and European companies.

Hat tip to Jay, BtB’s stringer.

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The first glacial evidence found on Mars back in 2007

11:36 am

Glaciers on Mars?
Click for original image.

Cool image time! The picture to the right, cropped, reduced, sharpened, and annotated to post here, was taken on January 3, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows the eastern wall of what the scientists call a graben, a large depression caused when the ground inside the depression suddenly shifted downward.

The elevation difference between the high and low points is about 3,500 feet. The streaks on the lower half of the cliff wall are slope streaks, a phenomenon unique to Mars that remains at this moment unexplained. Though the streaks resemble avalanches, they do not change the topography in any way, have no debris pile at their base, and appear instead to be a stain that appears at random times of the year that fades with time.

What is intriguing about this picture however is the wavelike floor on its western half. At first glance these waves suggest some form of dust dunes or lava flows, but neither conclusion appears correct. Instead, we are looking at what was one of the first discoveries on Mars of what scientists have determined to be glacial features.
» Read more

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Senate committee gives NASA and Commerce responsibility for removing space junk

9:10 am

The Senate Commerce committee has now okayed a bill that would require NASA to develop several space junk removal projects while giving the Commerce department the responsibility of identifying what space junk needs to be removed.

The core of the bill would direct NASA to establish an active debris removal program. That would include funding research and development activities “with the intent to close commercial capability gaps and enable potential future remediation missions for such orbital debris,” the bill states. NASA would also fund a demonstration mission for debris removal and allow it and other agencies to procure debris removal services.

The version of the ORBITS Act approved by the committee is different from the version introduced earlier this year. Among the changes is in a section that originally called on NASA to develop a prioritized list of orbital debris to remove. In the new version, that responsibility is given instead to the Commerce Department. The Commerce Department, through its Office of Space Commerce, is developing a space traffic coordination system called the Traffic Coordination System for Space (TraCSS) that will take over civil space traffic management roles currently handled by the Defense Department. That involves taking in data from Defense Department and other sources and using it to provide warnings of potential close approaches to satellite operators.

Though unstated, this bill appears to be a direct slap at the FCC’s effort under the Biden administration to claim the power to regulate space junk, despite its lack of statutory authority to do so.

The bill is of course not yet law, as it still needs to be approved by both the House and Senate. However, some version that stops the FCC now seems very likely, as the House itself has already rejected a bill that would have approved the FCC power grab.

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Satellite startup Planet lays off 10% of its workforce, most located in San Francisco

9:00 am

According to a filing to the SEC yesterday, the smallsat startup Planet has laid off 10% of its workforce, 117 employees of which 85 are located in San Francisco, in order “to prioritize our attention on the highest ROI [return on investment] opportunities for our business and mission,” as expressed by the company’s CEO to his employees.

The company presently operates a constellation of more than 200 small satellites designed to provide high resolution imagery of the Earth. In late 2021 it went public through a merger with a SPAC (special purpose acquisition company), and has since seen its stock price drop from $11.35 to $3.75 yesterday.

The layoffs this week are likely simply the company recognizing that its main office in San Francisco had become bloated and it needed to economize. It is even possible the company is now considering a move from San Fran and California, though this is not mentioned in any of its announcements.

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NASA detects weak signal from Voyager 2

8:22 am

Though communications with Voyager 2 have not been re-established, JPL engineers using NASA’s Deep Space Network of antennas have detected a weak signal from Voyager 2 that indicates the spacecraft is still functioning.

Using multiple antennas, NASA’s Deep Space Network (DSN) was able to detect a carrier signal from Voyager 2. A carrier signal is what the spacecraft uses to send data back to Earth. The signal is too faint for data to be extracted, but the detection confirms that the spacecraft is still operating. The spacecraft also continues on its expected trajectory. Although the mission expects the spacecraft to point its antenna at Earth in mid-October, the team will attempt to command Voyager sooner, while its antenna is still pointed away from Earth. To do this, a DSN antenna will be used to “shout” the command to Voyager to turn its antenna. This intermediary attempt may not work, in which case the team will wait for the spacecraft to automatically reset its orientation in October.

The hope is that new commands to re-orient, sent by the strongest signal possible, might be heard by the spacecraft, causing it to obey now. If not, this weak signal from Voyager 2 still suggests that the October reset will occur as normal and engineers will be able to recover communications then.

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Northrop Grumman’s Antares rocket successfully places Cygnus freighter into orbit

5:44 pm

Northrop Grumman’s Antares rocket tonight successfully launched a Cygnus freighter into orbit to ISS, flying for the last time with a first stage built in the Ukraine with engines from Russia.

Until Firefly can provide Northrop Grumman with a new American-made first stage, for the next three Cygnus cargo missions to ISS the company has purchased SpaceX’s Falcon 9 rocket.

This was Northrop Grumman’s first launch in 2023, so there is no change to the leader board in the 2023 launch race:

51 SpaceX
30 China
9 Russia
6 Rocket Lab
6 India

American private enterprise now leads China in successful launches 59 to 30, and the entire world combined 59 to 50, with SpaceX by itself still leading the entire world (excluding American companies) 51 to 50.

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Sunspot update: In July the Sun continued its high sunspot activity

5:05 pm

Today NOAA released its monthly update of its graph that tracks the number of sunspots on the Sun’s Earth-facing hemisphere. As I have done every month for the entire thirteen years I have been doing this website, I have posted that updated graph below, adding to it some extra details to provide some context.

Though the sunspot count in July was slightly less than the very high numbers in June (the highest seen in more than two decades), the decline was almost inconsequential. Except for June’s activity, the activity in July was still the highest sunspot count in a month since September 2002, when the Sun was just beginning its ramp down after its solar maximum that reached its peak in late 2001. From that time until the last two months, the Sun had been in a very prolonged quiet period, with two solar minimums that were overly long and a single solar maximum that was very weak with a extended double peak lasting almost four years.
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The wind-scoured dusty and cratered dry tropics of Mars

1:16 pm

The wind-scoured dusty and cratered dry tropics of Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on June 2, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO), and shows one small area in Martian equatorial regions where the main features are a dusty plain interspersed with craters, not entirely dissimilar to the Moon .

In the picture the northwest-to-southeast orientation of ridge-lines, plus the position of divots with their steep and deep end all on the northwest side, all suggest the prevailing winds here blow in the same direction, from the northwest to the southeast.

We are looking at a very ancient terrain. Many of these craters likely date from the early bombardment period of the solar system, just after the planets had formed but there was still a lot of objects around crashing into them.
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