Author: Robert Zimmerman

Space Force finally certifies ULA’s new Vulcan rocket for commercial military launches

9:26 pm

After significant delays in developing ULA’s new Vulcan rocket, and then further delays after the rocket’s second test launch (which experienced technical issues), the Space Force today finally announced that it has certified the rocket, thus allowing ULA to proceed with several military launches that have been stalled for months. From ULA’s press release:

In September 2016, ULA entered into an agreement with the U.S. Air Force and outlined the plan to certify Vulcan according to the Air Force’s New Entrant Certification Guide. Over the last few years, the collective ULA and Space Force team have completed 52 certification criteria, including more than 180 discrete tasks, two certification flight demonstrations, 60 payload interface requirement verifications, 18 subsystem design and test reviews, and 114 hardware and software audits.

What was not revealed was the criteria the Space Force used to finally put aside as critical the loss of a nozzle on one of Vulcan’s two side booster’s during the second test launch. While the rocket successfully got its payload into the proper orbit, for a booster to lose a nozzle is not trivial. ULA has recently said it had found the cause and has fixed it, but few details have been revealed. Nor has this new announcement revealed any further details about the fix.

Regardless, this certification is very good news for ULA. Expect it to move as quickly as it can (which will seem slow in comparison to SpaceX) to launch a number of delayed military launches.

6 comments

Restoring a historic racing yacht after buying it for a dollar

6:01 pm

An evening pause: The yacht, the Tally Ho, had won an important race in 1927 in Great Britain. The goal is to get this work done so it can compete in 2027 in a similar race in Britain that it won one hundred years previously.

Though after watching the video, it seems this is more like a complete rebuild from scratch rather than a restoration.

Hat tip Cotour.

10 comments

March 26, 2025 Quick space links

3:36 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

A major very public protest against Hamas by Gazans

12:04 pm

Protest against Hamas, in Gaza
Protest against Hamas, in Gaza

In what might signal a major turning point in Israel’s war against Hamas, many hundreds of Gazans earlier this week marched through the ruins protesting against Hamas quite publicly and apparently with no fear.

Hundreds of Gazans marched through the northern town of Beit Lahiya carrying white flags and chanting anti-Hamas slogans, according to videos posted from the scene, which showed participants calling for peace, press coverage, and the release of hostages.

In a rare public uprising against Hamas rule in Gaza, demonstrators took to the streets outside the Indonesian Hospital in northern Gaza. Footage shared on social media on Tuesday captured a crowd of protesters demanding an end to what they called “tyrant rule,” with chants of “Out, out, out! Hamas out!” and “We want to live!” echoing through the streets.

The images to the right are a screen capture from this video. The tweet claims thousands participated in this protest, with chants of “Down with Hamas, we’ve had enough, Hamas!”

Hamas has controlled Gaza for almost two decades. In that time any hint of protest against it has been routinely met quickly with brutal and violent retaliation. It now appears however that its power within Gaza has been severely damaged by Israel’s aggressive war, killing one leader after another with amazing efficiency.

Recently for example I have noticed in watching videos posted by Hamas supposedly showing Gazans cheering its effort, that if you look closely at the people in the crowd, many do not appear to be enthusiastic or supportive. Instead, these so-called Hamas supporters often have appeared sullen, joining the chants reluctantly almost out of fear.

These new protests against Hamas I think give us a better sense of the situation. Even though there is ample evidence that until recently Gazans of all stripes supported Hamas and were willing to eagerly aid it in its terrorist acts of murder, rape, and torture, it appears that Hamas’s failures in the war are finally taking their toll on its popularity.

These protests are a great opportunity for Israel, if it moves fast. If it can find and identify these protesters, especially their leaders, and protect them, it will further isolate Hamas and make its destruction more likely. It will also sow the seeds of a new leadership in Gaza that might actually be willing to live in peace with Israel.

47 comments

As Space Force switches to capitalism model for its satellites, it will also not name the companies it hires

9:58 am

Capitalism in space: The main reason President Trump got the Space Force established in his first term was because the Air Force resisted rethinking its space military operations. It insisted on building large government-built satellites that took years to complete and always went overbudget and behind schedule.

The creation of the Space Force gave new people the ability to push for a major change, switching to the capitalism model whereby the government designed and built nothing but instead acted as a customer buying what it needed from the private sector. In addition, it allowed a major shift from those big satellites — easy targets for destruction — to the large private constellations of many small satellites, cheap to build and launch and difficult for other militaries to take out.

The Space Force — in order to protect the satellite companies it hires to build these satellites — has now announced that it will no longer publish the names of those companies.

The U.S. Space Force plans to keep the names of commercial companies participating in its new space reserve program under wraps, aiming to protect them from potential adversary threats as commercial satellites play a growing role in military operations.

Col. Richard Kniseley, director of the Space Force’s Commercial Space Office, said companies signing agreements under the Commercial Augmentation Space Reserve (CASR) program can disclose their participation but are not required to. “That potentially puts a target on their back,” Kniseley told SpaceNews, underscoring the risk to private-sector firms providing space-based services during wartime.

Under this program, the Space Force has already signed contracts with four satellite companies, but the names remain undisclosed.

Though there is some logic to this decision, it carries great risk of corruption and misbehavior. Almost every time government bureaucrats and private companies are allowed to work in secret we routinely see kickbacks, bribery, and contract payoffs. And don’t expect congressional oversight to prevent such things, since there is now ample evidence from DOGE that our federal lawmakers have been quite willing to take their own payoffs to allow such corruption to prosper.

The switch to capitalism by the Pentagon is unquestionably a good thing. It will get more done for less. Letting it act in secrecy is a mistake however. Better to live with the risk of attack than allow our government and the companies it issues big money contracts to do things behind closed doors.

6 comments

Parker completes 23rd close fly-by of Sun, matching record set by its previous fly-by

9:42 am

The Parker Solar Probe on March 22, 2025 successfully completed its 23rd close fly-by of Sun, matching the distant and speed records set by its previous fly-by in December 2024.

NASA’s Parker Solar Probe completed its 23rd close approach to the Sun on March 22, equaling its own distance record by coming within about 3.8 million miles (6.1 million kilometers) of the solar surface. The close approach (known as perihelion) occurred at 22:42 UTC — or 6:42 p.m. EDT — with Parker Solar Probe moving 430,000 miles per hour (692,000 kilometers per hour) around the Sun, again matching its own record.

Actual science data won’t be downloaded from the spacecraft for several weeks, but it has sent back a signal that it is in good shape and operating as expected.

1 comment

Webb images in the infrared the aurora of Neptune

9:30 am

The aurora of Neptune
Click for original image.

Astronomers using the Webb Space Telescope have captured the first infrared images of the aurora of Neptune, confirming that the gas giant produces this phenomenon.

The picture to the right combines infrared data from Webb and optical imagery from the Hubble Space Telescope. The white splotches near the bottom of the globe are clouds seen by Hubble. The additional white areas in the center and near the top are clouds detected by Webb, while the greenish regions to the right are aurora activity detected by Webb.

The auroral activity seen on Neptune is also noticeably different from what we are accustomed to seeing here on Earth, or even Jupiter or Saturn. Instead of being confined to the planet’s northern and southern poles, Neptune’s auroras are located at the planet’s geographic mid-latitudes — think where South America is located on Earth.

This is due to the strange nature of Neptune’s magnetic field, originally discovered by Voyager 2 in 1989, which is tilted by 47 degrees from the planet’s rotation axis. Since auroral activity is based where the magnetic fields converge into the planet’s atmosphere, Neptune’s auroras are far from its rotational poles.

The data also found that the temperature of Neptune’s upper atmosphere has cooled significantly since it was first measured by Voyager 2 in 1989, dropping by several hundred degrees.

12 comments

Isar launch several times scrubbed due to high winds, rescheduled for tomorrow

9:16 am

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea

The German rocket startup Isar Aerospace, forced to scrub the first launch of its Spectrum rocket from Norway’s Andoya spaceport several times this week due to high winds, is now targeting a launch tomorrow, March 27, 2025, at 7:30 am (Eastern).

Munich-based Isar Aerospace postponed the debut launch of its Spectrum rocket, citing unfavorable winds at Norway’s Andøya Spaceport. On Tuesday, Isar said it will now target Thursday at 7:30 a.m. EDT for the highly anticipated test flight, which could pave the way for a more robust European presence in the commercial space industry.

The mission will not have a payload—rather, it will serve as the first integrated test of all rocket systems. And no matter what happens, Isar said it will view the test as a success.

…Standing about 92 feet tall with a diameter of about 6 feet, Spectrum is designed to carry payloads of up to 2,200 pounds to low Earth orbit. The two-stage vehicle burns 40 tons of liquid oxygen and propane across its nine first-stage Aquila engines and single second-stage engine. Unlike Falcon 9, though, the vehicle is not reusable, which is what allowed SpaceX to lower launch costs and take command of the market.

Isar’s goal is to eventually produce up to 40 Spectrum vehicles annually at its facility near Munich. Per Metzler, it builds nearly all components in house and is already producing two more rockets. The company is operating with about $435 million in funding from private investors as well as the NATO Innovation Fund and German government.

If successful, Isar will win the race to become the first new private rocket company from Europe to get to orbit. The launch will also inaugurate orbital operations from Andoya, giving Norway the first commercial spaceport in Europe, beating out both of the UK’s proposed spaceports that had begun work much earlier.

3 comments

Survey of protoplanetary disks finds their size varies significantly

9:02 am

Proto-planetary disks of all sizes
Click for original image.

A survey of the protoplanetary disks in a star-forming region about 400 light years from Earth has found that the size of the disks can vary considerably, with many much smaller than our own solar system.

Using ALMA [Atacama Large Millimeter/submillimeter Array in Chile], the researchers imaged all known protoplanetary discs around young stars in Lupus, a star forming region located about 400 light years from Earth in the southern constellation Lupus. The survey reveals that two-thirds of the 73 discs are small, with an average radius of six astronomical units, this is about the orbit of Jupiter. The smallest disc found was only 0.6 astronomical units in radius, smaller than the orbit of Earth.

…The small discs were primarily found around low-mass stars, with a mass between 10 and 50 percent of the mass of our Sun. This is the most common type of star found in the universe.

You can read the research paper here [pdf]. The image to the right, figure 1 from the paper, shows 71 of those disks, with two-thirds clearly much smaller than our solar system.

Because exoplanet surveys have found many small exoplanets around low-mass stars, this new data suggests that planets can also form from these small accretion disks, and that planet formation is also ubiquitous throughout the universe.

1 comment

Rocket Lab launches eight satellites for constellation to monitor wildfires

8:43 am

Rocket Lab today successfully launched eight satellites for German company OroraTech and its commercial constellation for monitoring wildfires, its Electron rocket lifting off from one of its two launchpads in New Zealand.

The leaders in the 2025 launch race:

34 SpaceX
14 China
5 Rocket Lab
4 Russia

SpaceX still leads the rest of the world in successfully launches, 34 to 26.

This is not the last launch expected today. Both China and SpaceX plan launches, with the Chinese launch scheduled to have occurred already. More information to follow as it becomes available.

0 comments
1 … 211 212 213 214 215 … 2,927