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Intuitive Machine’s Athena lunar lander to launch later today

12:41 pm

The second attempt by the startup Intuitive Machines to soft land a spacecraft on the Moon is scheduled to launch today at 7:16 pm (Eastern) time on a Falcon 9 rocket lifting off from the Kennedy Space Center in Florida.

I have embedded the Space Affairs live stream feed below, because it starts only 45 minutes before launch. If you want to watch an extra hour of pre-launch blather and propaganda from NASA, the official live steam can be found here. Be warned however. All the live feeds are being produced by NASA, which tends to make believe it made everything happen, when in truth both the rocket and lander are privately owned and built. NASA is contributing most of the science instruments, but without SpaceX and Intuitive Machines, none of those instruments would go anywhere.

A very good description of the mission and the science instruments on board, including a hopper, and a drill, can be found here.

Secondary payloads on the rocket include a low cost NASA lunar orbiter and the first interplanetary probe of a private company.

The first, Lunar Trailblazer, has two instruments for mapping the existence of water on the lunar surface. The second, Astroforge’s Odin spacecraft, will attempt a close fly-by of the asteroid 2022 OB5, thought to be made up mostly of nickel-iron and thus potentially very valuable resource for mining.

» Read more

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Juno data proves volcanism on Io involves numerous lava lakes

11:47 am

The lava lakes of Io
A global map of Io’s lava lakes. Click for original figure.

Based on data and imagery produced by the Jupiter orbiter Juno as it made a series of fly-bys of the moon Io from 2022 to 2024, scientists have now mapped at least 40 lava lakes amid the numerous volcanoes on the planet. The map above, figure 2 of the paper, shows their location and approximate relative size across Io’s surface. From the paper’s abstract:

Recent observations from the Juno spacecraft have revealed at least 40 lava lakes on Io, one of Jupiter’s moons, using the JIRAM (Jovian InfraRed Auroral Mapper) imager. Most of the large depressions on Io, known as paterae, show signs of heat, indicating that lava lakes are common. The lava lakes vary in size from 10 to 100 km in diameter and have a thin crust, about 5–10 m thick, that appears to be a few years old. The heat observed mainly comes from the larger crust, not the small exposed lava, so it is hard to measure the total heat output from just the thermal data. Additionally, eight of these lava lakes are new discoveries and were not previously known as active hotspots.

One aspect of these lakes found repeatedly in this new data is that their lava appears to rise and fall as a unit, as if the lake’s floor bed acts like a huge piston pushing the whole lake up and down from below, rather than lava entering in or draining out from a central vent. This conclusion appears to settle the debate between these models for explaining why the lava almost never rises high enough to pour out from the lake. Instead, the lakes themselves appear to be stable features, not volcanic calderas from which lava flows to build a mountain.

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Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 

The print edition can be purchased at Amazon, any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

More voices in Florida lobby to move NASA HQ there

10:15 am

Today there were several news stories quoting a variety of Florida politicians and industry groups pushing to have the Trump administration move NASA’s headquarters from Washington to Florida when its current building lease expires in 2028.

The first story mostly reiterated what was said by these politicians in January. All three seemed carefully timed to maximize exposure, which illustrates why one must always be skeptical of modern mainstream journalism. Too often it doesn’t report news, it serves as a propagandist for the interests of the political world.

Even so, moving a significantly reduced NASA headquarters to Florida makes some sense. If anything, it would save taxpayer money, and might also reduce the ability of NASA’s upper management to manipulate Congress to give it more money while accomplishing nothing, something that management has been doing now for decades.

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Rocket Lab’s shares lose 10% because of a negative assessment by stock analyst

9:53 am

Because one stock market analyst, Bleeker Street Research (BS) this week issued a negative assessment of Rocket Lab’s schedule for launching its new Neutron rocket, the company’s shares have lost about 10% of their value in the past few days.

In the report, BSR opines that while Rocket Lab has captivated investors with the promise of Neutron, its research shows the promise is built on shaky ground.

BSR believes the Neutron launch won’t take place until mid-2026, and could be delayed until mid-2027. Engine development, structure production, Wallops Island in Virginia, USA, launch pad construction, and transporting Neutron to the site are all factors cited by BSR as driving the delay.

BSR also questioned whether Rocket Lab could get its launch price of $50-$55 million.

Delays in launching a new rocket are to be expected, though as of now Rocket Lab has not indicated any issues that would preclude their predicted first Neutron launch in 2025.

One wonders if this report is merely the typical price manipulation you see all the time from stock market honchos. Issue a negative report which causes the price to drop, and then use that drop to buy up shares at discount prices.

At the same time, the analysis could be correct, though it depends on unnamed sources.

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Conscious Choice cover

Now available in hardback and paperback as well as ebook!

 

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of the Mars Society.

 

All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.

 

Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.

AST SpaceMobile successfully tests cell-to-satellite calls transmitting video

9:37 am

According to press releases from both Verizon and AT&T on February 24, 2025, each has successfully tested cellphone-to-satellite video calls using the first set of satellites in AST SpaceMobile’s BlueBird satellite constellation. From ATT:

AT&T and AST SpaceMobile have successfully completed a video call by satellite over AT&T spectrum using the BlueBird satellites launched last September. These are the same satellites that will be used to start commercial service.

From Verizon:

Verizon and AST have yet again pushed the boundaries of what can be done with mobile devices by successfully trialing a live video call between two mobile devices with one connected via satellite and the other connected via Verizon’s terrestrial network connection.

The satellites will essentially act like cell towers in space, filling in all dead spots not reached by ground-based towers.

AST’s constellation is competing with Starlink, which has signed T-Mobile for its service. In addition, Eutelsat-Oneweb has just successfully tested using its satellite constellation for the same purpose.

I suspect that in time, when these satellite systems have been thoroughly tested and have become operational, they will allow these phone networks to begin decommissioning their cell towers on Earth, thus reducing their costs significantly and thus lowering the cost to their customers.

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Lucy takes first picture of its next target asteroid

9:12 am

Lucy's future route through the solar system
Lucy’s route to the asteroids. Click for original blink animation.

The asteroid probe Lucy, on its way to the orbit of Jupiter to study numerous Trojan asteroids, has taken its first picture of the the main asteroid belt asteroid Donaldjohanson, which it will pass within 600 miles on April 20, 2025.

The map to the right shows the spacecraft’s looping route to get to the Trojans, with that image of Donaldjohanson in the lower right. Though the asteroid is about two miles side, it will remain an unresolved point of light until the day of the fly-by. This image was taken from a distance of 45 million miles. As for the asteroid’s name:

Asteroid Donaldjohanson is named for anthropologist Donald Johanson, who discovered the fossilized skeleton — called “Lucy” — of a human ancestor. NASA’s Lucy mission is named for the fossil.

After this encounter, Lucy will head to the Trojans, where it will visit its first six asteroids (including two binaries) in 2027-2028.

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Leaving Earth cover

Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.

 

If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.

 

Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.

 
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke

The Europa Clipper team prepares for Mars fly-by

8:52 am

Europa Clipper's route to Jupiter
Click for original image.

As planned, Europa Clipper is set to do a very close fly-by of Mars on March 1, 2025, zipping past the red planet at a speed of 15.2 miles per second only 550 miles above its surface. The graphic to the right shows the spacecraft’s planned route to Jupiter, including an additional fly-by of Earth in 2026.

During this first fly-by the science team will test two of Europa Clipper’s instruments.

About a day prior to the closest approach, the mission will calibrate the thermal imager, resulting in a multicolored image of Mars in the months following as the data is returned and scientists process the data. And near closest approach, they’ll have the radar instrument perform a test of its operations — the first time all its components will be tested together. The radar antennas are so massive, and the wavelengths they produce so long that it wasn’t possible for engineers to test them on Earth before launch.

The spacecraft launched with transistors not properly hardened for the hostile environment around Jupiter. Engineers claimed these would “heal” themselves once in Jupiter orbit. No word on whether there has been any issue from these components since launch.

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February 25, 2025 Quick space links

3:16 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

  • On this day in 1969, Mariner 6 was launched on a Mars flyby mission
    Like the previous fly-by mission, Mariner 4, and Mariner 6’s parallel mission, Mariner 7 and launched at approximately the same time, Mariner 6 focused on getting images of the dark areas of Mars as seen from Earth, which we now know are the Martian cratered highlands. Thus, all these missions suggested quite incorrectly that Mars was just like the Moon.
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Pushback: North Carolina University quickly backs down when challenged over its remaining DEI policies

2:03 pm

NC State: Maybe rotten to the core
NC State: Rotten to the core?

The tide really is turning: Two weeks ago I reported the effort by Stephen Porter, a professor at North Carolina State University, to force it to eliminate Diversity, Equity, and Inclusion programs (DEI) from its many policies. Porter had been ostracized and demoted by its faculty and staff back in 2021 for daring to question these policies then, but managed to keep his job.

Though the university had claimed in 2023 it had dropped DEI and instead instituted a “institutional neutrality” policy, Porter had no trouble finding DEI requirements and webpages still scattered everywhere in its rulebooks and webpages.

He decided to go to war, to file complaints with the NC Board of Governors about four different violations of its own “institutional neutrality” policy.

To his surprise, less than two weeks later the university responded somewhat positively. First, the university eliminated DEI from its overall strategic plan. That this hadn’t been done earlier either indicates sloppiness and incompetence by NC State’s administration, or a real reluctance to eliminate DEI. Either way, they have finally done so.

Second, they have quickly removed the still standing DEI websites that Porter had cited in his complaint.
» Read more

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Curiosity looks uphill into canyon

1:10 pm

Panorama taken on February 23, 2025
Click for full resolution. For original images, go here and here.

Overview map
Click for interactive map.

The panorama above, reduced and sharpened to post here, was created by me from two photographs taken on February 23, 2025 (here and here) by the left navigation camera on the Curiosity rover on Mars.

The overview map to the right provides the context. The blue dot marks Curiosity’s present position, with the white dotted line its past travels and the red dotted lines its planned route. The yellow lines indicate the approximate area covered by the panorama above.

Several things to note. The boxwork indicated on lower left of the overview map is the rover’s next major geological target. Though the rover team has made no announcement of a major route change, they have clearly diverged from that route by heading south and uphill into this canyon.

In reviewing the interactive map, I have not found any really good route up to the boxwork, other than this canyon. My guess is that the rover team is scouting it out as a possible new route. The panorama above is part of that scouting, and it certainly suggests that the canyon would be a good way to go.

They might also be considering this change because the old route would take them downhill, which would only have them studying geological layers they have already seen up close in Curiosity’s earlier travels. The team might have decided to forego the old route because it would not only look at geology already documented, it would add stress to Curiosity’s already stressed wheels. Since it appears the terrain up hill is going to continue to be this rough for as far as the eye can see, they likely decided it was better to move into unexplored geology now rather than later.

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Australia’s government proposes subsidies to build spaceport in Western Australia

10:28 am

Australian spaceports
Proposed commercial spaceports in Australia

The Labor Party that presently runs Australia has now proposed a $2 million program to “develop a business case” for a spaceport in the generally unpopulated state of Western Australia.

The red arrow and two X’s on the map to the right shows three potential locations. The Eucla and Christmas Island locations have been proposed by a private startup dubbed Space Angel. The Albany location has been proposed by a different startup called WA Australia.

At present, only the Bowen spaceport on Australia’s eastern coast has all its license approvals to do orbital launches, with the first now scheduled for mid-March. Southern Launch however has been a suborbital launch site for decades, and is also where many spacecraft returning from space have landed.

That the present leftist Australian government is considering a program to encourage new spaceports at these other locations instead makes me wonder if there isn’t a bit of political quid-pro-quo going on. Why favor these new locations in Western Australia exclusively? Why not offer this program to all the spaceports? I am especially suspicious of this proposal considering the regulatory burden the Labor government has placed on those other eastern spaceports, delaying approvals for years.

With so many commercial Australia spaceport proposals however suggests the political pressure to ease those regulations might be soon forthcoming.

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New calculations now say asteroid 2024 YR4 will almost certainly not hit the Earth in 2032

9:49 am

According to an announcement from NASA yesterday, the chances of asteroid 2024 YR4 hitting the Earth in 2032 is now reduced to 0.004%, meaning that it almost certainly not a threat at that time.

There remains a 1.7% chance it will instead impact the Moon in 2032.

These refined calculations were likely achieved by looking not at the asteroid itself (it is now too far away), but at places where it might have been visible to ground-based telescopes in the past, assuming it had an orbit that will hit the Earth in 2032. Since those past observations did not see it, those orbits are thus eliminated, and the threat goes down.

Of course, the uncertainty remains. It also remains important that we obtain more detailed information about this asteroid, because it is still a potential threat to the Earth.

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More changes in NASA’s upper management

9:40 am

NASA yesterday announced more changes in its upper management, almost all related to its manned Artemis program.

NASA announced today that Johnson Space Center Director Vanessa Wyche is now Acting Associate Administrator, succeeding Jim Free who retired over the weekend. Cathy Koerner, who has been leading the mission directorate that manages the Artemis program, will retire this Friday. Her Deputy, Lori Glaze, will take over on an acting basis.

These are not major changes. The new appointees, Wyche and Glaze, have been upper managers for a long time within NASA’s manned management structure that has created the present Artemis program.

These changes are also tentative depending on what Jared Isaacman decides to do once he is confirmed by the Senate as the actual administrator, replacing Janet Petro, who was named last week as the acting administrator. If Isaacman and Trump decide on canceling SLS and restructuring the entire Artemis program, both might also decide it needs an entirely new management staff.

I must also note the lack of any men in this list. NASA’s DEI effort for decades as apparently left no guys in that upper management, or if they are there, it continues to push them aside to support DEI racial and sex quotas, even though it now does not use those terms.

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February 24, 2025 Quick space links

3:07 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

2 comments

Bumpy frozen lava on Mars

2:50 pm

Bumpy frozen lava on Mars
Click for original image.

Cool picture time! The photo to the right, cropped, reduced, and sharpened to post here, was taken on September 30, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled simply as a “terrain sample,” it was most likely taken not as part of any specific research project but to fill a gap in the schedule in order to maintain the camera’s temperature.

The image is fascinating nonetheless, as the landscape is typically alien for Mars. What caused the many random ridges and knobs? Why are there oblong areas that are smooth and have no ridges? And why is there dark material inside that crater that appears to have been blown out to the northeast? If you click on the image to see the full image, not all the craters look this way. One has a similar dark feature, but others are as bland as the entire terrain.

The overview map below only increases these mysteries, even if it does provide some further data.
» Read more

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SpaceX now targeting February 28, 2025 for 8th Starship/Superheavy test orbital flight

1:13 pm

Superheavy captured for the second time
Superheavy captured for the second time,
on January 16, 2025

SpaceX today announced it will attempt the eighth Starship/Superheavy test orbital flight this coming Friday, February 28, 2025, with a launch window beginning at 5 pm (Central). From the company’s website update:

The upcoming flight will target objectives not reached on the previous test, including Starship’s first payload deployment and multiple reentry experiments geared towards returning the upper stage to the launch site for catch. The flight also includes the launch, return, and catch of the Super Heavy booster.

The company also published today a detailed report on its investigation into the loss of Starship soon after stage separation in the 7th test flight.
» Read more

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Hubble takes a close look at one tiny part of the Veil Nebula

12:47 pm

A small section of the Veil Nebula
Click for original image.

Cool image time! The picture to the right, reduced and sharpened to post here, was taken by the Hubble Space Telescope of just one very tiny section of the supernova remnant known as the Veil Nebula, located about 2,400 light years away.

The white dot on the inset (showing the entire Veil Nebula) marks the area covered by this closeup, focused on the one bright section of nebula in the Veil’s southwest quadrant. From the caption:

This nebula is the remnant of a star roughly 20 times as massive as the Sun that exploded about 10 000 years ago. … This view combines images taken in three different filters by Hubble’s Wide Field Camera 3 instrument, highlighting emission from hydrogen, sulphur and oxygen atoms. This image shows just a small fraction of the Veil Nebula; if you could see the entire nebula without the aid of a telescope, it would be as wide as six full Moons placed side by side.

Astronomers have been using Hubble to take periodic pictures of the Veil Nebular since 1994 in order to track changes as these gaseous gossamer strands evolve over time.

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Close-up of Blue Ghost’s landing zone on the Moon

12:26 pm

Close-up of Blue Ghost's landing zone
Click for original image.

The science team for Lunar Reconnaissance Orbiter (LRO) on February 21, 2025 posted the picture to the right, reduced and sharpened to post here, showing in close-up the March 2, 2025 landing zone for Firefly’s Blue Ghost lunar lander.

The Blue Ghost landing region (image center, 18.56°N, 61.81°E) is heavily cratered due its ancient age (>3 billion years). … The landing region is near a large volcanic cone, Mons Latreille, which formed billions of years ago as part of the massive outpouring of basaltic magma that filled much of the Crisium basin.

Despite the many craters, there are plenty of smooth spots in this landscape. The real challenge for the lander is finding its way to them.

For a map showing this location on the Moon, go here.

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Eutelsat-Oneweb uses its satellite constellations to test technology for phone-to-satellite capabilities

9:17 am

The communications company Eutelsat-Oneweb announced today that it has successfully tested the technology that would allow smartphones to use its satellite constellations as orbiting cell towers in order to eliminate dead zones in their ground-based systems.

Based on the press release, it is unclear whether the tests actually included a cell phone.

The trial used Eutelsat OneWeb satellites, with the MediaTek NR NTN test chipset, and NR NTN test gNB provided by ITRI, implementing the 3GPP Release 17 specifications. Sharp, Rhode & Schwarz provided the antenna array and test equipment and the LEO satellites, built by Airbus, carry transponders, with Ku-band service link, Ka-band feeder link, and adopt the “Earth-moving beams” concept. During the trial, the 5G user terminal successfully connected to the 5G core via the satellite link and exchanged traffic. [emphasis mine]

That user terminal might have been a smart phone, or it could have been an engineering test terminal.

Either way, Eutelsat-Oneweb appears to be aggressively trying to enter the competition for cell-to-satellite business, competing with the systems already operational from Starlink and AST SpaceMobile.

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Thales Alenia completes the habitable module for Lunar Gateway

9:05 am

Lunar Gateway
The Italian company Thales Alenia last week announced it has completed construction and testing of the hull for the habitable module for Lunar Gateway, and is now preparing it for shipment to the U.S. for final outfitting.

HALO’s (Habitation and Logistics Outpost) primary structure is ready to be packaged for shipment to the United States. After successfully completing a series of environmental tests in Thales Alenia Space’s plant of Turin, Italy, HALO’s pressurized structure, built by our company, will be delivered to Gilbert, Arizona, where prime contractor Northrop Grumman will complete its outfitting ahead of launch to lunar orbit with Gateway’s Power and Propulsion Element.

Thales Alenia also builds the hull for Northrop Grumman’s Cygnus capsule, from which HALO was based. HALO is longer however, and has three docking ports for the attachment of Gateway’s other modules.

The press release at the link appears mostly designed to tout Gateway and Thales Alenia’s major contribution to it, which also includes building the airlock for the United Arab Emirates. The company also has European Space Agency contracts to build a lunar lander for delivering cargo to the Moon as well as a habitat for use on the Moon. All of these projects are presently threatened with major changes should the Trump administration decides to cancel SLS, Orion, and Lunar Gateway.

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Rocket startup Interstellar receives another grant from Japan

8:51 am

The Rocket startup Interstellar announced on February 21, 2025 that Japan’s program to encourage commercial space has awarded it a new $9.3 million grant, bringing the total amount the company has received to approximately $53 million.

The SBIR is a 3 phased governmental program aimed to promote the implementation of advanced technologies developed by startups in Japan. Interstellar was selected in September 2023 under the space section focused on the “Development and Demonstration of Private Launch Vehicles” were the company received up to ¥2 billion [$13.3 million] in funding for Phase 1. After passing the review for Phase 2 in September 2024, another maximum of ¥4.6 billion [$30.8 million] were awarded.

In addition, in early January Toyota invested $44 million in this startup.

This story indicates that the Japanese government is finally moving to encourage private commercial space. It had announced this grant program in late 2023, but its bureaucracy had initially seemed reluctant to issue grants. This appears to be finally changing.

Interstellar is in itself an interesting story. Five years ago it appeared to be aggressively building its Zero rocket. It then disappeared. I figured its investment capital had dried up and the company had shut down. It seems it has now been reborn.

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Gilmour announces target date for first launch of its Eris rocket

8:32 am

Australian commercial spaceports
Australia’s commercial spaceports. Click for original map.

The rocket startup Gilmour Space today announced that it is targeting March 15, 2025 for the first orbital test of its Eris rocket, lifting off from its private Bowen spaceport on the east coast of Australia.

The news follows final airspace approvals from the Civil Aviation Safety Authority (CASA) and Airservices Australia, clearing the last regulatory hurdle before launch. It also marks the culmination of years of innovative R&D and manufacturing by the Gold Coast-based company, which developed the Eris launch vehicle and Bowen Orbital Spaceport in North Queensland.

Gilmour Space made history in March last year when its Bowen spaceport was granted the first orbital launch facility licence in Australia, and when it secured the country’s first Australian Launch Permit for Eris TestFlight 1 in November. Now, with airspace arrangements finalised and mandatory notice given to the Australian Space Agency, the company is preparing for liftoff.

Obtaining its permits from Australia’s government has taken years. The company first hoped to launch in 2022, but the red tape stymied that possibility.

If successful however this company’s achievement will be multifold. It will not only beat into orbit numerous other startups in the U.S. and Europe, it will give Australia its own orbital rocket built in Australia. For a country whose government never had much interest in joining the world’s space power — and appeared for the past three years determined to squelch this private company — Gilmour’s achievement will be significant. If anything, its success could force that government to change its ways

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Blue Ghost instrument proves Earth-orbiting GPS-type satellites can be used to track location from the Moon

9:16 pm

Having now reached lunar orbit in preparation for its landing on March 2, 2025, an engineering test instrument on Firefly’s Blue Ghost lunar lander has now proven that even from that distance spacecraft can use the multiple GPS-type satellites in Earth orbit to track their position.

The Lunar GNSS Receiver Experiment (LuGRE) acquired and tracked Global Navigation Satellite System (GNSS) signals for the first time in lunar orbit – a new record! This achievement, peaking at 246,000 miles, suggests that Earth-based GNSS constellations can be used for navigation in transit to, around, and potentially on the Moon. It also demonstrates the power of using multiple GNSS constellations together, such as GPS and Galileo, to perform navigation. After lunar landing, LuGRE will operate for 14 days and attempt to break another record – first reception of GNSS signals on the lunar surface.

This test is a very big deal. It tells us that operations on the Moon, at least those on the near side, will likely not require a GPS-type infrastructure in lunar orbit, thus allowing a lot of difficult missions to proceed sooner while saving a lot of money and time.

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China and SpaceX complete launches

7:36 pm

Two more launches today. First China launched a communications satellite into orbit, its Long March 3B rocket lifting off from its Xichang spaceport in the southwest of China. No word on where the rocket’s core stage and four side boosters crashed inside China. Nor has China released much information about the satellite itself.

Next SpaceX placed another 22 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg in California. The first stage completed its eleventh flight, landing on a drone ship in the Pacific.

The leaders in the 2025 launch race:

23 SpaceX
8 China
2 Rocket Lab

At this moment SpaceX’s 23 launches in 2025 is not far short of being twice as much as the 14 launches completed by rest of the entire world combined. It certainly is outpacing everyone else quite handily.

4 comments

Alison Balsom – Introducing the Baroque Trumpet

6:01 pm

An evening pause: Another music history lesson to start the weekend. As she says, listening to baroque music played on this instrument explains a great deal about that music, and definitely tells you what that music was expected to sound like when composed, compared to playing it on modern instruments. Far more haunting, a word I would never have used to describe Baroque music before.

Hat tip Judd Clark.

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February 21, 2025 Quick space links

4:39 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

11 comments

A Martian glacier of dust

3:14 pm

A Martian glacier of dust
Click for original image.

Cool image time! The picture above, rotated, reduced, and sharpened to post here, was taken on September 2, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The tiny white dot near the lower center of the overview map below marks the location, on the northern wall of the smaller parallel canyon to the much larger part of Valles Marineris dubbed Coprates Canyon.

The scientists label this a “slope deposit.” What I see is a dust glacier flowing down hill in that long hollow (indicated by the arrows), with the ripple dunes actually acting almost like waves. Nor is this description unreasonable. On Mars the dust will gather in the hollows of these slopes and over time, with no rain and little wind to disturb them, will begin to flow down much like a glacier.

In this case, the descent is gigantic, considering the size of Valles Marineris. From the top to bottom of this image the elevation drop is about 14,000 feet over a distance of 11 miles.

Overview map

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