Month: March 2025

Engineers turn off one more instrument on each Voyager spacecraft

3:57 pm

The Voyager missions
The routes the Voyager spacecraft have
taken since launch. Not to scale.

Due to continuing reductions in the power generated by their nuclear energy sources (after a half century of operation) engineers have now turned off one more science instrument on each Voyager spacecraft in order to extend the spacecrafts’ life as long as possible.

Mission engineers at NASA’s Jet Propulsion Laboratory in Southern California turned off the cosmic ray subsystem experiment aboard Voyager 1 on Feb. 25 and will shut off Voyager 2’s low-energy charged particle instrument on March 24. Three science instruments will continue to operate on each spacecraft. The moves are part of an ongoing effort to manage the gradually diminishing power supply of the twin probes.

Even with this action, the future lifespan of both spacecraft is very limited. It is expected the savings in power will allow both to last about a year longer, well into 2026. In order to keep the Voyagers operating as long as into the 2030s mission engineers are now working up a timeline for shutting down the remaining instruments in a step-by-step manner. In that long run the goal won’t be science gathering but engineering. Can humans keep a spacecraft operating for more than a half century at distances billions of miles away?

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Democrats: A party so filled with hate it can’t even cheer a child because Trump introduced him

1:32 pm

In the next day or so you will hear a lot of analysis of Trump’s speech yesterday to Congress, both good and bad. The bulk of that commentary will focus on what Trump has or has not accomplished, for good and ill. Some will talk about the overall foolish behavior of many Democrats, who refused to applaud anything Trump said (something Trump predicted would happen near the start of the speech), with one Democrat getting ejected from the building for heckling the president and refusing to stop.

During such speeches presidents usually tout their past achievements and future goals. With each proclamation, the members of that president’s party will repeatedly give him a short standing ovation, with the opposition party usually sitting quietly. This fake theater is one reason I generally don’t watch such events, relying on reviewing them after the fact to save a LOT of time.

Another tradition during these speeches is for the president to invite several ordinary citizens to attend in order to honor them in some way. At these moments, when the president introduces the citizen, the entire room would routinely stand and cheer, because these individuals are generally not party partisans, and the ruling president and his party usually have nothing to do with that person’s particular achievement.

Last night however was starkly different, and the screen capture below captures the one moment that demonstrates so fully the utterly bankrupt nature of the Democratic Party. One of the private citizens Trump invited to honor was a 13-year-old boy, DJ Daniel, who five years ago was diagnosed with terminal brain cancer and given only six months to live. Five years later he is still alive and healthy, and proudly wears a police uniform frequently in public because of his dream to be a cop someday.
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Lunar Reconnaissance Orbiter snaps picture of Blue Ghost on the Moon

11:21 am

Blue Ghost on the Moon
Click for full image. For original of inset go here.

Shortly after Firefly’s Blue Ghost lunar lander touched down within Mare Crisium on the Moon, the science team for Lunar Reconnaissance Orbiter (LRO) used it to capture a picture of lander on the surface of the Moon.

That image is to the right, reduced to post here. The inset was expanded and sharpened to bring out the details, with the arrow showing Blue Ghost, that tiny dot in the center with a shadow to the right.

The Firefly Blue Ghost lunar lander set down on 2nd March 2025. The landing site (arrow) is about 4000 meters from the center of Mons Latreille, a large volcanic cone [seen to the left].

…LRO was 175 kilometers east (19.294°N, 67.956°E) of the landing site when the NACs acquired this dramatic view of the landing site on 02 March 2025 at 17:49 UTC.

Blue Ghost landed shortly after lunar sunrise, and is designed to operate for one full lunar day (fourteen Earth days). Whether it can survive the 14-day-long lunar night won’t be known until the next sunrise.

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Psyche captures Jupiter and Mars on its way to asteroid Psyche

11:02 am

Jupiter and Mars as seen by Psyche
Click for original image.

As part of routine maintenance and calibration, engineers on January 30, 2025 used the cameras on the Psyche asteroid probe to photograph Jupiter, Mars, and several stars, proving all is well with the spacecraft.

Scientists on the imaging team, led by Arizona State University, also took images of the bright stars Vega and Canopus, which have served as standard calibration sources for astronomers for decades. The team is also using the data to assess the effects of minor wiggles or “jitter” in the spacecraft’s pointing system as it points the cameras to different places in the sky. The observations of Jupiter and Mars also help the team determine how the cameras respond to solar system objects that shine by reflected sunlight, just like the Psyche asteroid.

The starfield pictures shown here are long-exposure (five-second) images captured by each camera. By over-exposing Jupiter to bring out some of the background stars in the Taurus constellation, the imagers were able to capture Jupiter’s fainter Galilean moons as well.

The picture to the right, cropped and reduced to post here, might not be much to look at, but it clearly demonstrates the cameras work and the spacecraft can point accurately, and will work as planned when it arrives at the metal asteroid Psyche in August 2029.

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Watch the eighth orbital test launch of SpaceX’s Starship/Superheavy

9:31 am

SpaceX is now targeting a 60-minute launch window on March 6, 2025 beginning at 5:30 pm (Central) for its eighth orbital test launch of its gigantic Starship/Superheavy rocket.

I have embedded the Space Affairs live stream below, as SpaceX’s X feed does not become active until it starts broadcasting about 40 minutes before the opening of that window.

As noted prior to the first launch attempt on March 3, 2025:

This flight has the same essential flight plan as the seventh flight, mainly because the prototype Starship on that previous flight was lost before it could achieve any of its goals. After Superheavy separates and attempts a chopstick landing at Boca Chica, Starship will go into a low orbit that will bring it down over the Indian Ocean. During the coast phase it will attempt to deploy four dummy Starlink satellites to test its deployment equipment, as well as do a Raptor-2 engine restart to demonstrate this works in order to prepare for a full orbit flight on a future test flight, possibly as soon as the next test flight.

Starship will also be testing a new configuration of thermal protection during its return, including leaving some places on its hull with no protection to see how those locations fare.

That first attempt was scrubbed at T-40 seconds because of issues on both Superheavy and Starship. Though it appears the team might have gotten those issues solved and launched, the decision was made to stand down and get them fixed properly, rather than rush things and possibly cause the mission to fail.
» Read more

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Watch the landing of Intuitive Machines’ Athena lander on the Moon tomorrow

9:21 am

Athena's landing site 100 miles from the Moon's south pole

NASA has now announced its live stream arrangement for the landing of Intuitive Machines’ Athena lander on the Moon tomorrow at 12:32 pm (Eastern).

The live stream will begin about sixty minutes before landing. The NASA live stream is available here. I have also embedded it below.

The map to the right shows the landing site by the yellow “X”, about 100 miles from the Moon’s south pole on a high relatively flat plateau dubbed Mons Mouton. This will be the closest any lander has come to the pole, and was the original site chosen for NASA’s now-canceled VIPER rover. If the landing is successful Athena will land close to a small crater that is believed to have permanently shadowed areas. The plan had been to have VIPER travel into it. Now the small Grace hopper that Athena carries will attempt this instead.

This will also be the second attempt by Intuitive Machines to soft land on the Moon. Its first attempt last year was able to land and communicate back to Earth, but the landing was not completely successful. The lander, named Nova-C as well as Odysseus, was moving too fast sideways when it touched down, thus breaking one leg so that the lander fell on its side.
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France opens public comment period for adapting old French Guiana launchpad for commercial rockets

9:04 am

CNES, France’s space agency that now runs the French Guiana spaceport, is now running public meetings for the public to comment on its plans for adapting the old, long-abandoned Diamant rocket pad there for use by a number of commercial rocket startups.

On 17 February, the first of four public consultation sessions into the construction of the new Multi-Launcher Launch Complex (ELM1) at the Guiana Space Centre was held at Kourou Town Hall. This process allows local residents, stakeholders, and organizations to review the project and provide feedback before construction begins. A second session was completed on 23 February, with the remaining two sessions set for 10 and 18 March.

The construction of ELM1 will include common structures like the nodal building, guard post, offices, and storage areas, as well as more specific structures like assembly and preparation buildings, roads, and fences. The project is subject to a building permit, a unique environmental authorization under the regulations for Classified Installations for Environmental Protection, the Water Law, and a request for exemption from the prohibition on the destruction of protected species.

CNES in 2024 approved seven rocket startups to use the site. It later announced its plan to standardize the launchpad so that all users will have to arrive with identical engineering, something that these startups did not like. This comment period will allow them to voice those objections, and likely get the standardization minimized to only those places where it really matters. For example, the impression initially given was that the assembly and preparation buildings would require matching systems from all companies, something that makes no sense.

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Blue Ghost: Earth’s GPS constellations work on the Moon

8:50 am

Using an engineering test GPS-type receiver built by the Italian Space Agency, engineers have successfully been able to use the GPS-type satellites from two different constellations to pinpoint the location of Firefly’s Blue Ghost lander on the Moon.

The road to the historic milestone began on March 2 when the Firefly Aerospace’s Blue Ghost lunar lander touched down on the Moon and delivered LuGRE, one of 10 NASA payloads intended to advance lunar science. Soon after landing, LuGRE payload operators at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, began conducting their first science operation on the lunar surface.

With the receiver data flowing in, anticipation mounted. Could a Moon-based mission acquire and track signals from two GNSS constellations, GPS and Galileo, and use those signals for navigation on the lunar surface?

Then, at 2 a.m. EST on March 3, it was official: LuGRE acquired and tracked signals on the lunar surface for the first time ever and achieved a navigation fix — approximately 225,000 miles away from Earth.

Obviously, this is a first-time engineering test. A portable version of LuGRE will now have to be developed. However, this success means that any operation on the near side of the Moon will not need the addition of a new GPS-type constellation in lunar orbit. It also will likely simplify the design of any constellation for providing this capability to the far side.

Meanwhile, Blue Ghost continues to operate as planned on the surface, with all instruments functioning and several already collecting data.

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March 4, 2025 Quick space links

4:41 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.

5 comments

The real underlying battle between Trump and Zelinsky

2:01 pm

The kerfuffle last week between the United States and the Ukraine, instigated by the unprecedented ugly end to the press conference that concluded the visit of Ukrainian president Volodymyr Zelensky to the White House, is actually quite understandable if one is willing to consider the perspective of both sides. Unfortunately, I have seen little such analysis anywhere. Instead we get emotional attacks. On the left Trump is a vicious politician who wants to carve the Ukraine up for the benefit of Russia. On the right Zelensky is a corrupt barbarian who simply wants the war to continue forever so that he can steal as much U.S. foreign aid as possible for his own private benefit.

Neither of these conclusions are very helpful. Nor do they provide any insight to what is really going on.

So, what are the different perspectives that caused this confrontation?
» Read more

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Scientists: X-rays from the Helix Nebula caused by the destruction of a planet

10:12 am

A composite image of the Helix Nebula
A composite image of the Helix Nebula, combining data
from multiple ground- and space-based telescopes.
Click for original image.

Using data collected by multiple ground-bases and space telescopes over decades, scientists now think the previously unexplained high energy X-rays coming from the white dwarf star at the center of the Helix Nebula are caused by the destruction of a Jupiter-sized exoplanet.

The besieged planet could have initially been a considerable distance from the white dwarf but then migrated inwards by interacting with the gravity of other planets in the system. Once it approached close enough to the white dwarf, the gravity of the star would have partially or completely torn the planet apart. “The mysterious signal we’ve been seeing could be caused by the debris from the shattered planet falling onto the white dwarf’s surface, and being heated to glow in X-rays,” said co-author Martin Guerrero of The Institute of Astrophysics of Andalusia in Spain. “If confirmed, this would be the first case of a planet seen to be destroyed by the central star in a planetary nebula.”

The study shows that the X-ray signal from the white dwarf has remained approximately constant in brightness between 1992, 1999, and 2002 (with observations by ROSAT, Chandra and XMM respectively). The data, however, suggests there may be a subtle, regular change in the X-ray signal every 2.9 hours, providing evidence for the remains of a planet exceptionally close to the white dwarf.

You can read the original paper here. The Helix Nebula is about 650 light years away, and is one of the most studied planetary nebula, believed to have formed when the central star collapsed into a white dwarf.

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SpaceX reschedules Starship/Superheavy launch to March 5, 2025

8:48 am

SpaceX has now rescheduled the eighth orbital test flight of its giant Starship/Superheavy rocket for tomorrow, March 5, 2025, with its one-hour launch window opening at 5:30 pm (Central).

The new launch time was caused by the launch scrub yesterday for unspecified issues with both the spacecraft.

I have once again embedded below the Space Affairs youtube live feed of this launch. The SpaceX X feed will only be available once it goes live at about 4:40 pm (Central).
» Read more

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Falcon 9 first stage lost after landing yesterday

8:40 am

According to an update on SpaceX’s website, the first stage of the Falcon 9 that launched 21 Starlink satellites (not 23 as initially reported) yesterday was lost shortly after landing.

The first stage booster returned to Earth and landed on the Just Read the Instructions droneship, which was stationed in the Atlantic Ocean ~250 nautical miles off the coast of Florida. Following the successful landing, an off-nominal fire in the aft end of the rocket damaged one of the booster’s landing legs which resulted in it tipping over.

This is only the second time in years that a first stage has been lost in this manner. After the previous occurrence last year during the Biden administration, the FAA grounded all SpaceX launches for several days, an action that indicated clearly an effort to harass the company for political reasons. I will be very surprised if this happens again, with Trump now in office.

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Ispace targets June 6, 2025 for the Moon landing its Resilience commercial lander

8:31 am

Map of lunar landing sites
Landing sites for both Firefly’s Blue Ghost and
Ispace’s Resilience

The Japanese startup Ispace announced today that its Resilience commercial lunar lander will attempt its touch down inside the Mare Frigoris region on the Moon on June 6, 2025, as shown on the map to the right.

Should conditions change, there are three alternative landing sites that are being considered with different landing dates and times for each. A decision about landing will be made in advance, but the window for landing is open from June 6 through June 8, 2025.

The company also reports that the spacecraft is healthy and operating exactly as expected.

Though Resilience was launched on the same Falcon 9 rocket that launched Firefly’s Blue Ghost lunar lander, it has taken a longer route to the Moon, which is why its landing will take place three months later.

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Starship/Superheavy test launch scrubbed

4:57 pm

Though the countdown got down to T-40 seconds, the eighth orbital test launch of SpaceX’s Starship/Superheavy was scrubbed today due to a number of issues that popped up relating to both spacecraft.

At the moment we do not know exactly what those issues were, and will likely never get detailed explanations. Nor do we know when the next launch attempt will occur, though SpaceX has additional scheduled opportunities over the next week.

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Falklands government approves changes that will allow SpaceX to provide Starlink service

3:38 pm

After a small negotiating kerfuffle, the executive committee of the Falklands government has now approved a major licensing fee change that will allow SpaceX to offer its Starlink service to island residences.

The Executive Committee (ExCo) of the Falkland Islands Government has officially approved a considerable reduction in the VSAT licence fee – it is “minded” to slash it from £5,400 to just £180 but it will stay at £5,400 until final agreement in ExCo in early May. This decision paves the way for Starlink to begin providing services in the Falkland Islands, creating a game-changing step towards modernising the Islands’ telecommunications.

It appears that getting this approval required a major grassroots effort, as the government had initially been reluctant to change anything, despite the fact that numerous people were already using Starlink terminals illegally because there were no other options for good internet access, especially because the government’s deal with OneWeb had produced no results.

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March 3, 2025 Quick space links

3:31 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.

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Sunspot update: Sunspot activity remains high but stable

3:02 pm

The uncertainty of science Time for my monthly update on our Sun’s sunspot cycle, based on NOAA’s monthly graph of the sunspot activity on the Earth-facing hemisphere of the Sun, but annotated by me with additional information.

The graph below shows that the number of sunspots in February continued the trend during this solar maximum of being significantly higher than the consensus prediction by a panel of NOAA solar scientists, as indicated by the red curve. At the same time, the count in February was well below the high point during the summer of 2024. Instead, though it went up slightly in February it remains at about the same level we have seen since September.
» Read more

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Watch the 8th orbital test flight of SpaceX’s Starship/Superheavy rocket

10:36 am

The eighth orbital test flight of SpaceX’s Starship/Superheavy rocket is scheduled to occur today, with a 60-minute launch window opening at 5:30 pm (Central). I have embedded below the Space Affairs live stream feed, as SpaceX’s X feed won’t be active until about 40 minutes before launch.

This flight has the same essential flight plan as the seventh flight, mainly because the prototype Starship on that previous flight was lost before it could achieve any of its goals. After Superheavy separates and attempts a chopstick landing at Boca Chica, Starship will go into a low orbit that will bring it down over the Indian Ocean. During the coast phase it will attempt to deploy four dummy Starlink satellites to test its deployment equipment, as well as do a Raptor-2 engine restart to demonstrate this works in order to prepare for a full orbit flight on a future test flight, possibly as soon as the next test flight.

Starship will also be testing a new configuration of thermal protection during its return, including leaving some places on its hull with no protection to see how those locations fare.

To paraphrase Elon Musk, prepare for excitment.

» Read more

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A galaxy surrounded by clusters of hot massive stars

8:44 am

A galaxy surrounded by hot massive stars
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 the galaxy NGC 5042, located about 48 million light years away. The picture combines data from all of Hubble’s available wavelengths from the ultraviolet to the infrared. From the caption:

Perhaps NGC 5042’s most striking feature is its collection of brilliant pink gas clouds that are studded throughout its spiral arms. These flashy clouds are called H II (pronounced “H-two”) regions, and they get their distinctive colour from hydrogen atoms that have been ionised by ultraviolet light. If you look closely at this image, you’ll see that many of these reddish clouds are associated with clumps of blue stars, often appearing to form a shell around the stars.

H II regions arise in expansive clouds of hydrogen gas, and only hot and massive stars [indicated by blue] produce enough high-energy light to create an H II region. Because the stars capable of creating H II regions only live for a few million years — just a blink of an eye in galactic terms — this image represents a fleeting snapshot of life in this galaxy.

The image also includes one star (distinguished by its four diffraction spikes) and a few background galaxies in yellow, the most obvious found in the upper and lower right.

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Russia and SpaceX complete launches

9:34 pm

Two more launches today. First, Russia launched a Glonass GPS-type satellite, its Soyuz-2 rocket lifting off from its Plesetsk spaceport in northern Russia. The rocket’s core stage, four strap-on boosters and upper stage all landed in planned zones within Russia. Whether they crashed near homes is unknown.

Next SpaceX launched another 23 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral in Florida. The first stage completed its fifth flight, landing on a drone ship in the Atlantic.

Note that though some launch sites indicate China also did a launch this weekend of the solid-fueled Kuaizhou-1A rocket built by the pseudo-company Expace, a translation of this French site indicates the launch was a failure.

The leaders in the 2025 launch race:

26 SpaceX
9 China
3 Russia
2 Rocket Lab

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Astroforge’s Odin spacecraft tumbling and probably be lost

9:09 am

According to a video update by the company’s founder, Matt Gialich, Astroforge’s Odin spacecraft is slowly tumbling, and is likely going to be lost.

Gialich noted that they still have one more possibility to save the spacecraft, but “hope is fading.”

The goal had been to make the first fly-by of an asteroid by a private company, getting data on the M-type asteroid 2022 OB5, thought to be made up largely of nickel-iron which would make it extremely valuable.

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Blue Ghost successfully completes a soft landing

1:46 am

Blue Ghost's shadow on the Moon, with the Earth in the background
Blue Ghost’s shadow on the Moon,
with the Earth in the background.

Firefly tonight became the second private commercial company to land a spacecraft softly on the Moon, its Blue Ghost successfully touching down within Mare Crisium on the northwest quadrant of the visible near side.

At this moment we do not have details about the spacecraft’s condition. Nonetheless NASA bigwigs have come out of hiding to celebrate (if the landing failed they would have likely quietly disappeared). Lots of blather about “important scientific research” but the most important data from this mission is the engineering.

I think the viewers would much rather stay with mission control to hear details about Blue Ghost’s condition. One big unknown is that, of the four landing leg pads, one did not register contact with the ground, though this appears to simply be a failure of the sensor. Just after landing one engineer in mission controler announced the spacecraft was stable, but more information would be of more useful than listening to upper managers from NASA puff themselves. (It is also getting tiresome that the announcers seem incapable of asking anything but “How do you feel?”, one of the most useless questions a journalist can ever ask.)

The first photos are expected shortly. I will update when available.

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Live stream of the lunar landing of Firefly’s Blue Ghost

7:27 pm

Map of lunar landing sites
Landing sites for both Firefly’s Blue Ghost and
Ispace’s Resilience

I have embedded below the live stream from Firefly of tonight’s landing attempt on the Moon of its Blue Ghost lander. The stream goes live at 1:30 am (Central), with the landing targeting 2:45 am (Central).

The map to the right shows the location, in Mare Crisium. For context the map also shows the landing sites for several Apollo missions, as well as the location where Ispace’s first lander, Hakuto-R1, crashed, inside Atlas Crater. Also shown is the landing site of Ispace’s second lander, Resilience, in the north in Mare Frigoris.

Overall Blue Ghost’s nominal mission is engineering, to prove the lander can get to the Moon, touch down softly, and operate on the surface. If all goes well it will operate for about a week plus, during the lunar day. Whether it can survive the 14-day-long lunar night won’t be known until the Sun rises there and ground engineers can see if they can re-establish contact.

» Read more

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FAA issues launch license for 8th Starship/Superheavy test flight

9:12 am

The FAA yesterday announced that it has given SpaceX the launch license for its 8th orbital test launch of Starship/Superheavy, presently scheduled for March 3, 2025 at 5:30 PM (Central).

“After completing the required and comprehensive safety review, the FAA determined the SpaceX Starship vehicle can return to flight operations while the investigation into the Jan. 16 Starship Flight 7 mishap remains open,” the FAA’s emailed statement reads. [emphasis mine]

The highlighted phrase reveals much. There is a new boss in Washington now who will not tolerate unnecessary red tape that stymies private enterprise unnecessarily. SpaceX is the only entity qualified to investigate the loss of Starship in the seventh flight, and it has completed its investigation. All the FAA can really do in its own “investigation” is retype SpaceX’s conclusion. It might have some clean-up work of its own relating to clearing the air space after Starship was destroyed, but even there SpaceX’s conclusion note that the plan worked out before launch between the company and the FAA worked perfectly.

Under Biden the FAA would have made SpaceX wait while that retyping took place, likely assigned to someone who can only hunt and peck at an old manual typewriter. No more.

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