Sunspot update: Sunspot activity rebounds somewhat in June

As I have done since I started this website fifteen years ago, I post at the start of every month an update of the Sun’s ongoing sunspot activity, using the update that NOAA posts each month to its own graph of sunspot activity but annotated by me with extra information to illustrate the larger scientific context.

Below is that graph, showing that in June sunspot activity rebounded upward somewhat from the shocking drop in activity that occurred in May.

» Read more

Another interstellar object identified entering the solar system

A11pl3Z's path through the solar system

Astronomers think they have identified another interstellar object that is now entering the solar system.

The dim space rock is currently at about magnitude 18.8. Our new visitor, A11pl3Z, will get its closest to the sun – at about 2 astronomical units (AU), or twice as far as Earth is from the sun – in October. As it reaches perihelion – its closest point to the sun – it should be moving at about 68 km/s relative to the sun, or at about 152,000 miles per hour.

The object’s calculated path through the solar system, shown by the blue line in the graphic to the right, as well as the object’s high speed, are why the astronomers think it is interstellar in origin. Both facts suggest it is coming from beyond the Oort cloud.

This is the third such object discovered, after Oumuamua (whose nature remains somewhat unknown), followed by Comet 21/Borisov.

Astronomers discover supernovae that apparently exploded twice

Double detonation supernova
Click for original picture.

Using the ground-based Very Large Telescope (VLT) in Chile, astronomers have discovered evidence suggesting a star apparently exploded twice went it went supernova several hundred years ago.

They detected this possibility by looking at the remnant of that blast, shown to the right. It shows a double halo, indicated by the blue and orange colors. The blue however is seen in both shells. As noted by the VLT’s press notice:

Calcium is shown in blue, and it is arranged in two concentric shells. These two layers indicate that the now-dead star exploded with a double-detonation.

This type of supernova, dubbed type 1a, occurs when a white dwarf sucks matter from its closely orbiting stellar companion. That material piles up on the surface of the star until it reaches critical mass and explodes, causing the supernova.

The two shells, suggesting a double detonation, fits a theory proposed for this process. From the paper’s abstract:

Our analysis reveals that the outer calcium shell originates from the helium detonation at the base of the outer envelope, while the inner shell is associated with the carbon–oxygen core detonation. This morphological distribution of intermediate-mass elements agrees qualitatively with the predicted signature of the double detonation of a sub-Chandrasekhar-mass white dwarf from a hydrodynamical explosion simulation.

In other words, the outer shell resulted from the explosion caused by the helium ripped from the companion star, with the resulting shockwave detonating the second explosion inside the white dwarf’s core.

That’s the theory at least. This data supports it, but it certainly doesn’t prove it.

Methane climate satellite fails

Fifteen months into a five year mission it appears the methane climate satellite MethaneSat has apparently failed prematurely.

From the press release by the environmental activist organization Environmental Defense Fund that operated the satellite:

On Friday, June 20, the MethaneSAT mission operations lost contact with MethaneSAT. After pursuing all options to restore communications, we learned this morning that the satellite has lost power, and that it is likely not recoverable.

The satellite was unusual in that it was developed and built by this activist organization, not a government or academic institution. Its failure is especially unfortunate at this time, because this non-governmental approach to science research is exactly what the science community needs to pursue faced as it is with major cuts in federal funding.

Senate reconciliation budget bill includes Cruz’s big spending additions to NASA

Senate NASA budget increases

According to a tweet yesterday by Representative Marjorie Taylor Greene (R-Georgia), the reconciliation budget bill that was passed by the Senate included the budget additions that Senator Ted Cruz (R-Texas) had proposed to save SLS, Orion, and Lunar Gateway.

The graphic to the right lists these budget numbers. It is not clear whether the launch taxes on payloads that Cruz proposed were also included, though likely not based on the rules under which the reconciliation bill was passed.

This additional money for these projects contradicts directly the NASA 2026 budget proposal put forth by Trump that aimed to cancel Lunar Gateway and end SLS and Orion after only two more flights. Their existence in this passed Senate bill suggests that Congress is cool with the idea of spending this money and continuing these projects, even though they do nothing but waste taxpayer money and get us no where in space.

It also appears from the language in the graphic that the Senate is eager to also spend more money on NASA’s Mars sample return project, even though NASA itself still has no idea how to accomplish the task.

SpaceX yesterday completed two launches

SpaceX yesterday successfully completed two launches from Florida. First, it placed a European Union weather and climate research satellite, Sentinel-4, its Falcon 9 rocket lifting off from the Kennedy Space Center. The first stage completed its ninth flight, landing on a drone ship in the Atlantic.

Next, it continued its unrelenting pace of launching Starlink satellites, its Falcon 9 rocket lifting off with 27 from Cape Canaveral. The first stage completed its 29th flight, landing on a drone ship in the Atlantic.

That flight makes this particular first stage the third most traveled launch vehicle, with only the space shuttles Discover (39 flights) and Atlantis (33 flights) ahead of it.

The leaders in the 2025 launch race:

84 SpaceX
35 China
10 Rocket Lab
7 Russia

SpaceX now leads the rest of the world in successful launches, 84 to 61.

July 1, 2025 Quick space links

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.

Upcoming appearances on both the Space Show and Coast to Coast

I will be appearing on both the Space Show with David Livingston and Coast to Coast with George Noory over the next two evenings.

First, tonight I will be doing a 90 minute-plus appearance on the Space Show. It will be broadcast on Zoom and well as live streamed. Instructions for calling in can be found at this link. Scroll down to see them.

Next, tomorrow I will be doing the first two hours on Coast to Coast with George Noory. More information can be found here.

In both appearances the subject of Trump, Musk, SpaceX, Starship, and SLS is certain to come up, as well as the NASA budget. Expect as always conclusions you don’t expect. I welcome my readers to participate, either by calling in or emailing questions.

Webb detects unexpected “little red dots” in the early universe

The uncertainty of science: Using the Webb Space Telescope astronomers have begun to compile a small catalog of what they call “little red dots” [LRDs], objects in the very early universe that are very small, too small to be galaxies and are thus a mystery.

A team of astronomers recently compiled one of the largest samples of LRDs to date, nearly all of which existed during the first 1.5 billion years after the big bang. They found that a large fraction of the LRDs in their sample showed signs of containing growing supermassive black holes.

“We’re confounded by this new population of objects that Webb has found. We don’t see analogs of them at lower redshifts, which is why we haven’t seen them prior to Webb,” said Dale Kocevski of Colby College in Waterville, Maine, and lead author of the study. “There’s a substantial amount of work being done to try to determine the nature of these little red dots and whether their light is dominated by accreting black holes.”

The present most popular theory to explain the dots, based on the available data, is that the dots are newly formed black holes, their red light caused by material falling into the hole at millions of miles per hour. That theory has of course problems. For example, it doesn’t explain why we don’t see these dots in more recent times. Nor does it explain why the dots are dim in X-rays, a radiation expected from accreting black holes.

As always, the press release claims that this discovery does not “break” the present cosmological theories for the formation of the universe, but at the same time, it does illustrate our overall lack of knowledge about that early universe. We really don’t know very much, which means any theories we have are likely wrong simply due to our present ignorance.

China releases images of Earth and Moon, taken by its Tianwen-2 asteroid probe

Tianwen-2 images of the Earth and the Moon
For original images go here and here.

According to a report today in China’s state-run press, its Tianwen-2 asteroid sample return spacecraft is operating normally, and has successfully taken pictures of both the Earth and the Moon to test its instrumentation.

Those images are to the right, cropped, reduced, and sharpened to post here.

The CNSA [China National Space Administration] said that the narrow-field-of-view navigation sensor equipped on the probe recently captured the images of Earth and the moon, demonstrating good functional performance.

The images released include a photograph of Earth obtained by Tianwen-2 when it was approximately 590,000 kilometers away from the planet, as well as a new photograph of the moon captured when it was about the same distance from the moon. After the images were transmitted back to the ground, they were processed and produced by scientific researchers.

The Tianwen-2 probe has currently been in orbit for over 33 days, at a distance from Earth exceeding 12 million kilometers, and it is in good working condition, the CNSA said.

The probe will take about a year to reach asteroid Kamo’oalewa, where it will fly in formation studying it for another year, during which time it will attempt to grab samples by two methods. One method is a copy of the touch-and-go technique used by OSIRIS-REx on Bennu. The second method, dubbed “anchor and attach,” is untried, and involves using four robot arms, each with their own drill.

Speculation on future New Glenn launch schedule

According to anonymous sources at Blue Origin, the company has now delayed the second launch of its New Glenn rocket to September, ten months after its first launch in January 2025, and hopes to quickly follow with three more launches by the middle of 2026.

The September launch will launch NASA’s two smallsat Escapade Mars orbiters.

After Escapade, Blue Origin has several missions tentatively plotted out. However, sources cautioned that the manifest could be moved around due to the readiness of subsequent New Glenn vehicles and their payloads. Based upon information received by Ars, the launch manifest could look something like this:

  • New Glenn 2: ESCAPADE (fall 2025)
  • New Glenn 3: Firefly’s Elytra orbital transfer vehicle (end of 2025, early 2026)
  • New Glenn 4: Blue Moon MK1 lander (first half of 2026)
  • New Glenn 5: First batch of 49 Amazon Project Kuiper satellites (mid-2026)

Whether this schedule will occur as speculated is unknown. Blue Origin’s long term track record — slow and timid — suggests it is very unlikely. And even if it does fly as planned, it suggests strongly that Amazon is not going to meet its FCC license requirement to have 1,600 Kuiper satellites in orbit by July 2026. So far Amazon has only placed 54 operational Kuiper satellites into orbit, on two Atlas-5 launches. It has contracts to launch these satellites 46 times on ULA rockets (8 on Atlas-5 and 36 on Vulcan), 27 times on Blue Origin’s New Glenn, 18 times on ArianeGroup’s Ariane-6, and 3 times on SpaceX’s Falcon-9.

Except for the Falcon 9, none of the other rockets have begun flying with any frequency. Vulcan has only launched twice, New Glenn once, and Ariane-6 twice. All three have been extremely slow to ramp up operations, with months passing between each launch. To meet Amazon’s FCC license requirements, they will have to achieve between 35 to 60 launches in the next twelve months, a pace of three to six launches per month. At this point none of these companies appear capable of even coming close to doing this.

Nor does Amazon have the option to switch these launches to the Falcon 9. SpaceX would certainly accept the business, but the manifest for the Falcon 9 is presently very full. It is doubtful it could do more than double or triple its commitment to Amazon.

NASA still hoping to save its Lunar Trailblazer mission

Though the odds of success are very dim, NASA has decided to give engineers another few weeks to try to activate its Lunar Trailblazer orbiter, that stopped communicating with Earth the day after it was launched in late February.

NASA has extended recovery efforts of its Lunar Trailblazer spacecraft from mid-June to early July. Updated modeling of the spacecraft’s trajectory by the mission team indicates lighting conditions will continue to be favorable and may provide enough sunlight for the spacecraft’s solar panels to recharge its batteries to an operational state and turn on its radio.

…Should enough sunlight reach Lunar Trailblazer’s solar panels, the batteries may charge to a level that allows the spacecraft’s radio system to boot up. But as Lunar Trailblazer travels farther away, it will soon be too distant to recover because its telecommunications signals to Earth will be too weak for the mission to receive telemetry and command.

The mission team has determined that if they can regain command of the spacecraft, the propulsion system isn’t frozen, and the instruments remain operable, the spacecraft may be able to achieve an elliptical lunar orbit and complete its lunar science objectives.

As I said, the chance of success are not good.

Mitsubishi wants to cut launch price of H3 rocket to $35 million

Mitsubishi Heavy Industries, which developed the new H3 rocket for Japan’s space agency JAXA, wants to attract commercial launch business, and to do so hopes to cut the rocket’s launch price to about $35 million.

According to the article at the link, the price for the H2A rocket that the H3 has replaced was 10 billion Japanese yen, about $70 million.

The H2A launched more than 70 satellites and other objects into space, serving as the backbone of Japan’s space transportation. However, there was an average of only two launches a year, and most depended on “public demand” for government satellites. There were only orders for commercial launches for five satellites belonging to foreign countries, such as South Korea and the United Kingdom.

…For Mitsubishi Heavy Industries, Ltd., which took over the manufacture and operation of the H2A from JAXA in 2007, winning commercial orders has been a longstanding issue. The H3 was jointly developed by MHI and JAXA with the aim of halving the launch fee.

That price listed for the H2A rocket is likely wrong, much lower than the real price, as it matches what SpaceX has been offering publicly for the Falcon 9 for more than a decade. If the H2A had been that cheap, it would have garnered some business. It did not.

Lowering the cost for the H3 rocket to $35 million would definitely be competitive in the present launch market. Whether Mitsubishi can accomplish this however remains unclear. So far there is no indication that this new rocket has attracted any more business than the H2A, but as the rocket has only just started launching it is still too early to judge.

June 30, 2025 Quick space links

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.

Baby stars illuminating the dust that surrounds them

Baby stars illuminating dark dust
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope showing the wispy bluish clouds made of dark dust that we can only see because the dust is illuminated by the reflected light from the five red and blue stars nearby. Think of the Moon, lit only by the reflected light of the Sun.

The photo however was not taken to study the clouds, but these baby stars, located in one of the closest star forming regions of the Milky Way.

GN 04.32.8 is a small part of the stellar nursery known as the Taurus Molecular Cloud. At only roughly 480 light-years from Earth in the constellation Taurus, it’s one of the best locations for studying newly forming stars. This reflection nebula is illuminated by the system of three bright stars in the centre of this image, mainly the variable star V1025 Tauri in the very centre. One of those stars overlaps with part of the nebula: this is another variable star that is named HP Tauri, but is classified as a T Tauri star, for its similarity to yet another variable star elsewhere in the Taurus Molecular Complex. T Tauri stars are very active, chaotic stars at an early stage of their evolution, so it’s no surprise that they appear in a prolific stellar nursery like this one! The three stars are also named HP Tau, HP Tau G2 and HP Tau G3; they’re believed to be gravitationally bound to each other, forming a triple system.

Eagle-eyed viewers might notice the small, squashed, orange spot, just left of centre below the clouds of the nebula, that’s crossed by a dark line. This is a newly-formed protostar, hidden in a protoplanetary disc that obstructs some of its light. Because the disc is edge-on to us, it’s an ideal candidate for study. Astronomers are using Hubble here to examine it closely, seeking to learn about the kinds of exoplanets that might be formed in discs like it.

As beautiful as this image is, it is that tiny protostar near the bottom that likely attracts the most interest from astronomers.

Update on SpaceX’s plans to resume Starship/Superheavy flight testing

Link here. The article provides a detailed overview of the situation at Boca Chica following the static fire explosion of a Starship on June 18, 2025, which badly damaged the Masseys test stand used by Starship prior to launches.

The problem facing the company is that it wants to fly the last few version-two Starships (called Block 2) before it is ready to switch to the upgraded Block 3, and these two versions apparently require a different set up on the test stand. The article outlines three options, with the first two the simplest and most straightforward, but require the most delays.

Option three, which is the most SpaceX-like of them all, would involve the repair Masseys for Block 3 and, in parallel, attempt to come up with a plan to static fire Ships on Orbital Launch Pad 1 (A). This would allow SpaceX to continue testing and flying the remaining Block 2 Ships while preparing for Block 3 of Starship. This is what SpaceX is planning.

In other words, do Block 2 Starship prelaunch static fire tests on the launchpad itself while Masseys is being rebuilt for Block 3.

The article outlines in detail the technical difficulties this plan requires, because the launch mount is also used for prelaunch static fire tests of Superheavy. The two rockets require different mount clamping and fueling systems.

If this is the plan that SpaceX is following, it will likely mean that the next test flight, the tenth, will occur in about two months, maybe sooner. We will get a better idea of the company’s plans in the coming weeks.

Blue Origin completes another New Shepard suborbital flight

My heart be still. Blue Origin yesterday successfully flew another New Shepard suborbital tourist flight, sending six passengers on a ten minute flight to the edge of space.

This was the company’s thirteenth suborbital flight, and the third in the past three months. Though it is gratifying that operations of New Shepard are becoming somewhat routine, it would be much more exciting if the company to do the same for its New Glenn orbital rocket. The suborbital flights are essentially a dead end. The real money and future is found in orbital operations, something Blue Origin has still not yet mastered.

Orbex delays first launch from Saxavord until 2026

Map of spaceports surrounding Norwegian Sea
Proposed spaceports surrounding the Norwegian Sea

The rocket startup Orbex has now announced that “infrastructure requirements and engagement with regulators” has forced it to delay the first launch of its Prime rocket from 2025 until 2026.

Orbex at the start of this decade had signed a 50-year lease to launch its Prime rocket from the proposed Sutherland spaceport on the north coast of Scotland. In February 2022 it applied for a launch license, with the hope of launching before the end of that year. For three years it waited for the UK’s Civil Aviation Authority (CAA) to approve that license, to no avail.

Finally in December 2024 it gave up on launching from Sutherland and shifted its plans to the Saxavord spaceport in the Shetland Islands, apparently because that spaceport had been more successful in getting its CAA approvals (though even it had to wait years).

Though the company attributes this new delay as much to getting its launch facility ready at Saxavord, delays caused by British red tape continues to be a systemic and entrenched problem in the United Kingdom. It appears it remains so.

More successful launches today

Two more launches occurred this morning, one in Japan and one in the U.S.

First, Japan completed the last launch of its H2A rocket, lifting off from its Tanegashima spaceport in south Japan, placing a Japanese climate satellite into orbit. This was the 50th launch for the H2A, which has now been replaced by the as expensive H3 rocket.

Next, SpaceX continued its unrelenting launch pace, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California carrying 26 more Starlink satellites into orbit. The first stage completed its eighth flight, landing on a drone ship in the Pacific Ocean.

As Japan’s launch was only its second in 2025, it does not make the leader board of the 2025 launch race:

82 SpaceX
35 China
10 Rocket Lab
7 Russia

SpaceX still leads the rest of the world in successful launches, 82 to 61.

Two American launches this evening

This evening two different American companies completed successful commercial launches, doing so from opposites sides of the globe.

First, SpaceX launched another 27 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral, with the first stage completing its fifth flight, landing on a drone ship in the Atlantic Ocean. This launch was on the evening of June 27th.

Then, a few hours later Rocket Lab completed the first of two quickly scheduled launches for an unnamed commercial customer, its Electron rocket lifting off from one of its two launchpads in New Zealand. This launch, on June 28th in New Zealand, was the company’s second launch in less than two days, its fastest turn around yet. As of posting the payload was not yet deployed.

The leaders in the 2025 launch race:

81 SpaceX
35 China
10 Rocket Lab
7 Russia

SpaceX still leads the rest of the world in successful launches, 81 to 60.

June 27, 2025 Quick space links

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.

Another blacklisted professors wins big in court

Law professor Scott Gerber
Law professor Scott Gerber

Fight! Fight! Fight! After two years of battle in the courts, a blacklisted tenured professor who was fired by his university in 2023 without due process because he had publicly criticized and opposed its racist diversity, equity, and inclusion (DEI) quota policies has now won a complete victory in court.

First the background: In 2023 Ohio Northern University (ONU) sent campus police to Dr. Scott Gerber’s classroom — while he was teaching a class — and had him physically removed from the campus, without warning or explanation. In firing Gerber no legal due process was followed, with the university violating in every manner its own employment policies. Even months later university officials refused to give any reason for his firing. The timing of its action though strongly suggested the university administration objected to his opinions, as he had that same week published an op-ed opposing the school’s DEI policies.

Gerber sued, hiring the pro-bono legal firm America First Legal (AFL) to defend him. (You can read the full complaint here [pdf]. The college’s actions were clearly unconscionable.)

Now two years later, AFL announced yesterday that it has won a full settlement victory for Gerber.
» Read more

European Union proposes new space law to supersede national space rules

The European Union

The European Union (EU) has now released its proposed Space Act that would impose European-wide regulations on the space industries of all its partnering nations, superseding their own regulations and policies.

The press release claims, at the start, that this space act would “cut red tape, protect space assets, and create a fair, predictable playing field for businesses,” but in reading the act itself [pdf], it appears to do the exact opposite. It imposes new environmental, safety, and cybersecurity regulations on the design of satellites and spacecraft in a manner that will likely slow development and competition in Europe significantly. And it applies these regulations not only to European companies but to the rest of the world’s space industry, should it do any operations at all in Europe.

This European Union space law was initially supposed to be released last year, but was delayed because it appeared there was strong opposition to it from many of the union’s member nations.

The proposed law appears to have been reshaped to limit the areas the EU can regulate space, but my appraisal of these regulations is that they are designed to quickly expand to cover everything, while adding an unneeded layer of red tape across Europe’s space industry that will only cause it to founder.

It must also be noted once again that there is no one in the bureaucracy of the EU qualified to impose these regulations on the space industry. The EU launches nothing. Its bureaucracy knows nothing about space technology. All it can do is say no to anyone that wants to achieve anything, just because it thinks it knows better.

It will be interesting to see if this space law passes. It still must be approved by European Parliament and the European Commission. I expect there to be significant opposition from several different member states, most especially Germany, Spain, and Italy, each of which have a newly emerging space industry. We should also expect opposition from the member nations formerly part of the Soviet bloc, as their past totalitarian experience makes them very skeptical of this kind of bureaucratic power play.

At the same time, the political structure of the European Union is designed to encourage the passage of such laws, which is one reason there is a rising movement in many member nations to leave the union. If the law passes, expect it to cause more fragmentation within Europe, rather than unifying the continent as it claims it will do.

OSHA investigating the collapse of a crane at SpaceX’s Boca Chica facility

OSHA has now opened an investigation into the collapse of a crane at SpaceX’s Boca Chica facility on June 24, 2025, captured by one of the commercial live streams that track activities there continually for the general public.

I have embedded the video of that collapse below.

A SpaceX crane collapse at the company’s Starbase, Texas facility on Tuesday has prompted an investigation by the Occupational Safety and Health Administration, the federal agency told CNBC in an email.

The crane collapse was captured in a livestream by Lab Padre on YouTube, a SpaceX-focused channel. Clips from Lab Padre were widely shared on social media, including on X, which is owned by SpaceX CEO Elon Musk.

It wasn’t immediately clear whether any SpaceX workers were injured as a result of the incident. Musk and other company executives didn’t respond to a request for comment.

The article at the link provides no additional information, instead focusing on what appears to be an anti-SpaceX screed. It never mentions that cranes such as this are almost certainly not owned by SpaceX, and are likely rented and operated for SpaceX by other independent crane companies. Thus, this failure is likely a failure of that crane company, not SpaceX directly.
» Read more

June 26,2025 Quick space links

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.

  • Another new Chinese pseudo-company, Welight, touts a reusable rocket
    Jay notes, “I love the comment: ‘Every other month we get to see a new Chinese Space company'”. I note that the Xi government requires all of its rocket pseudo-companies to share data, which means anyone in that government can steal this information to form their own pseudo-company, and use their position of power to get favored treatment when it comes time to compete for government contracts. It is therefore not surprising that so many new pseudo-companies keep popping up.

Rocket Lab launches four radio surveillance satellites

Rocket Lab today successfully launched four radio surveillance satellites for the company Hawkeye 360, its Electron rocket lifting off from one of its two launchpads at its New Zealand spaceport.

This was Rocket Lab’s second of three launches under a Hawkeye 360 three-launch contract.

The leaders in the 2025 launch race:

80 SpaceX
35 China
9 Rocket Lab
7 Russia

SpaceX still leads the rest of the world in successful launches, 80 to 59.

The sagging flank of one of Mars’ giant volcanoes

The sagging flank of Elysium Mons
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on May 1, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the science team labels a “chain of pit craters in [a] graben”.

A graben is a surface fissure created when the surface either spreads or two sections shift sideways in opposite directions. The chain of pits suggest that there is a larger void below into which the surface is sinking. It is also likely that a lot of the sinking material is volcanic ash, thrown free in an eruption hundreds of millions of years ago, which over the eons has been blown up to this location to settle in the crack to fill it. It is now trapped there, and sinking.

What caused the ground here to shift and create the fissure? In this case, the cause is quite large and massive, in a way that boggles the mind.
» Read more

Nozzle blows off of Northrop Grumman SLS solid rocket booster during static fire test

During a static fire test of a new upgraded strap-on solid-fueled booster to be used on the second version of NASA’s SLS rocket, it appears the nozzle broke off near the end of the test.

I have embedded the video below.

This failure is not good for getting the upgraded version of SLS built, dubbed Block 2. Block 1 has flown once unmanned, and is planned for the next two manned missions. Block 2 would be for further manned missions beyond that. The Trump administration has proposed cancelling it, ending SLS after those two Block 1 flights. Senator Ted Cruz (R-Texas) has instead introduced a bill that would save it in order to fly two Block 2 SLS manned missions.

This failure is definitely going to delay and add cost to Block 2 development, a program that is already over budget many times over and a decade-plus behind schedule. These additional delays and cost overruns are not going to help it politically. It justifies the Trump administration’s desire to cancel it.

Moreover, this nozzle failure suggests a very fundamental design problem. Northrop Grumman, which built and was testing this booster, also builds the solid-fueled strap-on boosters used on ULA’s Vulcan rocket, which had a similar nozzle failure during Vulcan’s second launch in October last year. Both Northrop Grumman and ULA have said they had identified and fixed the cause of that failure, and the military has certified it for operational launches, but nonetheless Vulcan still remains sidelined, more than eight months later.

I suspect ULA is going to have to do more testing of the Northrop Grumman Vulcan side boosters before its next Vulcan launch, delaying that rocket further.
» Read more

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