Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

Luna-25 lost after crashing on Moon

9:37 am

During its last major orbital burn, Luna-25’s engines apparently fired for longer than planned so that, instead of placing it into a lower orbit, the spacecraft was de-orbited and sent crashing onto the lunar surface.

The Russian space agency noted that all measures regarding the location of the spacecraft and establishing communications with it on August 19 and 20 yielded zero results. “Preliminary analysis results suggest that a deviation between the actual and calculated parameters of the propulsion maneuver led the Luna-25 spacecraft to enter an undesignated orbit and it ceased to exist following a collision with the surface of the Moon,” Roscosmos stated.

This is a tragedy for Russia, as this mission hoped to re-establish it as one of the major players in the exploration of the solar system. Instead, we once again have a data point suggesting significant quality control problems within Russia’s aerospace industry. Its misplaced focus on providing government jobs rather than actually building and quickly flying spacecraft and rockets results too often in failure.

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Luna-25 fails to enter orbit for landing on Moon

12:23 pm

Though it is in lunar orbit, Russia’s Luna-25 lander today was unable to perform an engine burn as planned to place it in its final orbit for landing.

“Today, in accordance with the flight program of the Luna-25 probe, at 2:10 p.m. Moscow time, a command was issued to the probe to enter the pre-landing orbit. During the operation an emergency occurred on the space probe that did not allow it to perform the maneuver in accordance with the required parameters,” Roscosmos said.

Engineers are analyzing the issue, but no other information was released.

This issue could simply be the spacecraft’s computer aborted the engine burn because it sensed something not right, and that after some correction another burn can follow later. Under this circumstance the landing attempt would simply be delayed.

It is also possible something happened during that engine burn, and the spacecraft is either in an incorrect orbit, or might even be lost entirely. Stay tuned.

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Hacker attack on Gemini North telescope in Hawaii shuts down many U.S.-run telescopes

9:34 am

A attack by hackers against the Gemini North telescope in Hawaii on August 1, 2023 has forced the National Science Foundation (NSF) to shut down all the telescopes it operates.

NOIRLab, the NSF-run coordinating center for ground-based astronomy, first announced the detection of an apparent cyberattack on its Gemini North telescope in Hilo, Hawaii, in a 1 August press release. Whatever happened may have placed the instrument in physical jeopardy. “Quick reactions by the NOIRLab cyber security team and observing teams prevented damage to the observatory,” the center’s release said.

In response to the incident, NOIRLab powered down all operations at the International Gemini Observatory, which runs the Hilo telescope and its twin, Gemini South, on Cerro Pachón mountain in Chile. (The latter was already offline for a planned outage.) Together, the two 8.1-meter telescopes have revealed vast swaths of celestial wonders—from the birth of supernovae to the closest known black hole to Earth.

Normally, NOIRLab’s computer systems let astronomers remotely operate a variety of other optical ground-based telescopes. But on 9 August the center announced it had also disconnected its computer network from the Mid-Scale Observatories (MSO) network on Cerro Tololo and Cerro Pachon in Chile. This action additionally made remote observations impossible at the Víctor M. Blanco 4-meter and SOAR telescopes. NOIRLab has stopped observations at eight other affiliated telescopes in Chile as well.

The attack has shut down ten telescopes entirely, some of which are the largest in the world, while other telescopes are operating but only allowing in-person operations.

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Mars’ endless cycles of glacial activity

10:46 am

Overview map

Mars' endless cycles of glacial activity
Click for original image.

While the images being sent to us from Mars Reconnaissance Orbiter (MRO) repeatedly show features that appear convincingly like glaciers, the data is also beginning to tantalize us with evidence of the endless glacial cycles that have occurred on Mars.

The picture to the right, cropped, reduced, and sharpened to post here, was taken on June 27, 2023 by MRO’s high resolution camera. The red dot in the inset of the overview map above shows the location, the western flanks of an apron that surrounds a 3,800-foot-high mesa in the chaos region Deuteronilus Mensae, the western end of the 2,000-mile-long mid-latitude strip of chaos regions I dub glacier country, because every image seems to show some form of glacial feature.

Today’s picture is no different. The apron shown here drops the last 1,000 feet of the mesa’s total 3,800-foot height, during which it shows dozens of what the scientists label “parallel lines.” These lines likely reveal the layers of glacial ice in this apron, with the older layers larger and more extensive. Apparently, with each growth cycle the glacier obtained less snow from the atmosphere, so the more recent layers grew less.

In other words, the amount of water on Mars has been declining with time.

Untangling these numerous layers will undoubtedly give us a remarkably detailed history of Mars entire geological history. Unfortunately, that untangling cannot happen until we have boots on the ground, on Mars, able to drill core samples from many different places.

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Regulatory problems for Saxavord spaceport in Shetland?

9:53 am

In a short statement reported in the local Shetland press, the under-construction Saxavord spaceport in Scotland has apparently laid off some construction workers, claiming it has done so “because the project was so far ahead of schedule.”

The statement however also alluded to the United Kingdom’s Civil Aviation Authority (CAA), which must issue a launch license before any launches can occur.

SaxaVord Spaceport said: “SaxaVord continues to have excellent dialogue with the authorities and is fully expecting to receiving its spaceport licence very soon from the Civil Aviation Authority. We are looking forward to hosting vertical rocket launches in the coming months.”

The application for this launch license was submitted in November 2022. It appears that the CAA still needs a year or more to approve any launch license, a slow and endless process that if not corrected will make launches from the United Kingdom completely unprofitable.

Saxavord had hoped to get its first launch off this year, by fall. It now appears that will not happen.

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Commercial spaceport in Australia signs its first launch contract

9:42 am

Australia map showing ELA spaceport location
The red dot marks ELA’s location, on the north coast of Australia.

Australia’s first commercial spaceport, Equatorial Launch Australia (ELA), has signed a multi-launch contract with a South Korean startup rocket company, Innospace, with the first launch targeting April 2025.

Though Innospace successfully launched a suborbital test flight in March, it has not yet launched a rocket to orbit. Meanwhile, ELA is negotiating with a number of other rocket companies, but it also appears it is having problems with the administrative state in the U.S.

The South Korean company is first off the blocks as it is not subject to the strict technological transfer regulations applied by the United States.

[ELA’s CEO Michael] Jones says delays to the signing of a Technological Safeguards Agreement (TSA) between Canberra and Washington is holding up several potential US customers. “We’re still waiting with bated breath for the TSA, despite a bilateral announcement by Biden and Albanese in Japan in early June that the deal was done and dusted,” he explains. “We were all expecting it to be released by the end of the financial year and the process of being endorsed by Parliament begun”.

A pattern of delay and intransigence in Washington, blocking commercial space, does seem to be developing since Joe Biden took over as president.

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Luna-25 takes first image of lunar surface

9:07 am

Luna-25's first lunar image
Click for interactive map. Zeeman is located on the lower left.

Russia’s state-run press today issued the first picture taken by Luna-25 after entering lunar orbit two days ago. That picture, to the right and cropped and reoriented to post here, shows part of Zeeman Crater at 75 degrees south latitude and 135 degrees west, on the far side of the Moon. From the TASS announcement:

“The Luna-25 spacecraft, flying in a circular orbit as the Moon’s artificial satellite, has taken pictures of the lunar surface with television cameras of the STS-L system. The image, taken today at 08:23 Moscow time, shows the southern polar crater Zeeman on the far side of the Moon. The coordinates of the crater center are 75 degrees south and 135 degrees west,” the state corporation said. Roscosmos said the Zeeman crater is of great interest to researchers. Its rim rises eight kilometers above its relatively flat floor.

The picture shows Zeeman’s southern rim to the left, with its pockmarked crater floor to the right. The crater the lander is targeting, Broguslawsky Crater, sits in the opposite hemisphere of Zeeman, slightly closer to the south pole but on the Moon’s near side.

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August 17, 2023 Zimmerman/Pratt on Texas podcast

8:10 pm

I appeared today for about 45 minutes with Robert Pratt as part of his Pratt on Texas podcast, discussing a whole range of blacklists stories with him. We also talked about my most recent book, Conscious Choice, which if you are a fan of my work and have not yet read it you need to buy it now! No more delays or procrastination! You have your orders.

This is part one of a two part interview, the second half of which Pratt plans to post this coming week.

That podcast is embedded below. It can also be listened to here.
» Read more

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August 17, 2023 Quick space links

4:57 pm

Courtesy of BtB’s stringer Jay.

  • New images of the floor of Blue Origin’s BE4 rocket engine production facility in Alabama

    • Jay sent me a video of this same production facility in April. Compare the visuals in that video at around 42 seconds with today’s image. That nozzle on the platform appears to be the same nozzle in both shots, unmoved in four months. Moreover, the floor seems as inactive now as then. If I was ULA this data would make me very very worried about getting the engines I need for Vulcan on the scheduled required.

 

 

  • SpaceX lifted nearly 10 times as much mass to orbit as China in the second quarter 2023

    • The graph illustrates how false the notion has always been that you must have a heavy lift rocket to get a large amount of mass to orbit. All you really need is a cost-effective and efficient reusable rocket that can launch frequently, such as the Falcon 9. Heavy lift would be nice, but if it isn’t reusable and cost effective, it just won’t do the job.

 

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Today’s blacklisted American: California city harasses Rabbi for having guests over for dinner

1:20 pm

Beverly Hills: Where Jews are forbidden to pray
Beverly Hills: Where Jews are forbidden to pray

They’re coming for you next: The headline above is literally true, though you need to know a bit about Judaism, especially Orthodox Judaism, to understand what I mean exactly.

The story is this: Because Rabbi Levi Illulian, like all Orthodox Jews, routinely invites friends and acquaintances to join his family for Friday night dinner and Saturday lunch at his home during the weekly Saturday Sabbath, officials in Beverly Hills in California sent him a “notice of violation” on June 12, 2023, telling him that these dinners must cease, and ordered him to “terminate all religious activities” that included any “non-residents.” It also threatened him with civil and criminal proceedings if he didn’t stop praying with friends in his home.

It appears that the city’s actions were instigated by the complaints of one unnamed neighbor. As described in the letter [pdf] sent by Illulian’s lawyers to the city in response to its notice of violation, after receiving those two complaints in February and March about parking, trash, and noise, the city instituted an investigation that involved stake-outs of Illulian’s home and the use of drones over his property (without a warrant) in which city officials “not only tallied the number of individuals and cars coming and going from the Home, but also photographed Rabbi Illulian’s guests.”
» Read more

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The inexplicable behavior of Martian dust devils

11:49 am

The inexpicable behavior of Martian dust devils
Click for original image.

Today’s cool image illustrates the puzzling inclination of Martian dust devils to strongly favor specific regions on the Martian surface, for reasons that at present no one can confidently explain.

The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on June 28, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a plethora of dust devil tracks, almost all of which have an east-west orientation. Moreover, the tracks seem uninfluenced by the surface topography, continuing on their path without deviation, even as they cross cliffs, craters, and mounds. The orientation tells us the direction of the prevailing winds, though I don’t know if those winds blow to the east or to the west.

What makes this image revealing is that a gathering of such dust devil tracks is seen so rarely in other MRO high resolution photographs. I look at a lot of MRO pictures, and though dust devil tracks are not rare, most images don’t show this many. Apparently, there are specific conditions on Mars that cause a lot of tracks to appear in specific locations, either because atmospheric conditions create a lot more dust devils, or the ground conditions allow the tracks to become more visible.
» Read more

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Ball Aerospace purchased by BAE Systems

9:57 am

BAE Systems today announced it has purchased from Ball Corporation its aerospace division, Ball Aerospace, for $5.6 billion.

It appears that the Ball corporation wants to focus its business plan around its “circular aluminum packaging for global beverage and household brands,” rather than aerospace. This sale essentially concludes the company’s slow transition away from its long time space business, which began just prior to Sputnik in 1956. It is essentially out of that business now, and instead has returned entirely to its packaging roots from the late 1800s.

BAE meanwhile strengthens its focus on space, both in the commercial and defense markets, with the addition of the Ball Aerospace division, which has been in the space business for decades.

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The ups and downs of capitalism in space

9:44 am

Two stories today illustrate how allowing freedom and capitalism to rule in the development of America’s aerospace industry carries with it the potential for wonderful achievements as well as depressing failures.

First the potential failure. Despite having successfully flown several missions demonstrating its orbital tug and service module for cubesats, the company Momentus has been forced to lay off 30% of its staff because of dwindling cash reserves.

Momentus reported a record quarterly revenue of $1.7 million in the second quarter, the first time it reported revenues of more than $1 million in a quarter. However, the company reported a net loss of $18.8 million and ended the quarter with $21.6 million of cash and equivalents on hand.

The company is presently scrambling to find new sources of investment capital, as it does not expect its income to grow sufficiently in the next year to keep itself above water, even though it should successfully fly more flights of its Vigoride orbital tug as well as a new service module version.

Next we have the potential achievement: The financial status of the startup satellite company Terran Orbital appears healthy and strong, mostly because of a $2.6 billion contract to build 300 satellites for the wireless communications company Rivada Space Networks. The first $180 million payment under that contract is expected this year.

At the same time, there are storm clouds in the distance, as there remain unanswered questions about whether Rivada has the resources sufficient to fulfill the contract.

During Terran Orbital’s Aug. 15 earnings call, H.C. Wainwright & Co analyst Scott Buck said Rivada’s vagueness about its plans for financing the constellation has caused “investor hesitation around the contract.”

Terran Orbital has already a number of successes building satellites for others, with its most significant achievement the CAPSTONE lunar orbiter it built for NASA. If the Rivada contract falls through I suspect the company will still be able to garner plenty of customers to survive.

For Momentus the situation is more dire, especially because it already faces strong competition from a number of other orbital tug companies.

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Scientists: Neptune’s clouds appear to ebb and grow in conjunction with sunspot cycle

9:24 am

Graph showing correlation between Neptune's clouds and the sunspot cycle

Scientists have now discovered what appears to be a link between the coming and going of clouds on Neptune to the Sun’s 11-year-long sunspot cycle, despite Neptune receiving only 1/900th the sunlight of the Earth.

To monitor the evolution of Neptune’s appearance, Chavez and her team analyzed images taken from 1994 to 2022 using Keck Observatory’s second generation Near-Infrared Camera (NIRC2) paired with its adaptive optics system (since 2002), as well as observations from Lick Observatory (2018-2019) and the Hubble Space Telescope (since 1994). In recent years the Keck Observatory observations have been complemented by images taken as part of Keck Observatory’s Twilight Observing Program and by Hubble Space Telescope images taken as part of the Outer Planet Atmospheres Legacy (OPAL) program.

The data revealed an intriguing pattern between changes in Neptune’s cloud cover and the solar cycle – the period when the Sun’s magnetic field flips every 11 years, causing levels of solar radiation to fluctuate. When the Sun emits more intense ultraviolet (UV) light, specifically the strong hydrogen Lyman-alpha emission, more clouds appear on Neptune about two years later. The team further found a positive correlation between the number of clouds and the ice giant’s brightness from the sunlight reflecting off it.

“These remarkable data give us the strongest evidence yet that Neptune’s cloud cover correlates with the Sun’s cycle,” said de Pater. “Our findings support the theory that the Sun’s UV rays, when strong enough, may be triggering a photochemical reaction that produces Neptune’s clouds.”

The graph to the right shows the correlation between the clouds and the sunspot cycle. The paper is available here.

This conclusion remains uncertain because of the overall sparseness of the data. Yet, it is intriguing, and also underlines the importance of the Sun on the Earth’s climate. If the solar cycle can impact Neptune’s climate so significantly from 2.8 billion miles away, it certainly must have a major impact on the Earth’s climate at only 100 million miles distance.

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Chandrayaan-3’s Vikram lander separates from its propulsion module; Luna-25 in lunar orbit

9:08 am


Click for interactive map.

The two probes aiming to land in the high southern latitudes of the Moon in the next week are now both in lunar orbit and preparing for their planned landings.

First India’s Chandrayaan-3: With its propulsion module having completed the job of getting Chandrayaan-3 from Earth to lunar orbit, the Vikram lander today separated from that module in preparation for firing its own engines on August 23, 2023 and landing on the Moon.

Vikram needs to make several orbital adjustments before that landing attempt.

Second, Russia’s Luna-25 probe entered lunar orbit yesterday, where it will spend the next few days making its own orbital adjustments before attempting its landing on August 21st.

Vikram carries a small rover, Pragyan. Luna-25 is only a lander, though it has a scoop and will do analysis of the lunar soil below it. Neither is landing “near the south pole”, as most news sources are saying. They are landing at latitudes comparable to landing in the Arctic on Earth, on the northern coast of Alaska. As such, neither will find out anything about the question of remnant ice in south pole’s permanently shadowed regions.

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SpaceX launches another 22 Starlink satellites from Cape Canaveral

8:59 pm

SpaceX tonight successfully launched another 22 Starlink satellites into orbit. its Falcon 9 rocket lifting off from Cape Canaveral at 11:36 pm Eastern.

The first stage completed its thirteenth flight, landing on a drone ship in the Atlantic. The two fairings completed their 10th and 11th flights, respectively. As of posting the satellites had not yet deployed.

SpaceX has another launch scheduled only hours hence, at midnight (Pacific) from Vandenberg Space Force Base in California, aiming to put another 22 Starlink satellites in orbit using a first stage flying for its fifteenth time.

Until that second launch, the leaders at this moment in the 2023 launch race are as follows:

56 SpaceX
35 China
11 Russia
6 Rocket Lab
6 India

In successful launches, American private enterprise now leads China 64 to 35 in the national rankings, and the entire world combined 64 to 57. SpaceX by itself trails the rest of the world combined (excluding American companies) 56 to 57, but this will become a tie if the second launch occurs as planned.

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Two-thirds of all approved cancer drugs do nothing for patients

4:26 pm

A long term study in Sweden of 22 cancer drugs that its government had approved for rapid use before being tested fully has found that two-thirds provided absolute no benefit to patients.

The Gothenburg team examined 22 cancer drugs approved for reimbursement in Sweden over the last 10 years, examining studies that tested their ability to improve quality of life or lengthen lifespans. On average, these reports examined the drugs for 6.6 years.

Results revealed only seven of the 22 drugs had at least one study which showed a clear benefit for cancer patients. Randomized controlled trials on the other 15 failed to show any tangible benefits for people with cancer. Only one drug in the study showed an ability to both improve the quality of life and extend lifespans for patients.

“We have shown that the majority of the drugs launched with limited evidence still lack clear evidence of how they actually affect survival and quality of life in patients,” says Gabriella Chauca Strand, a doctoral student at Sahlgrenska Academy at the University of Gothenburg and the lead author of the study, in a university release.

This sentence from the university’s press release was even more striking:

Only one of the drugs had scientific evidence of both increased life expectancy and improved quality of life for its indication.

Essentially, 95% of these approved drugs were failures. Most did nothing and were worthless, despite the Swedish government paying huge amounts of money buying them. A few either improved the quality of life (but failed to keep the patient alive) or kept the patient alive longer (but made their lives miserable).

Does this sound familiar? Doesn’t make you wonder about the drug approval process in the U.S., especially after the disaster of the emergency approval of the COVID shots that we know now not only failed to prevent infection, were actually very harmful to many.

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August 16, 2023 Quick space links

3:14 pm

Courtesy of BtB’s stringer Jay.

 

 

 

 

 

 

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An avalanche in the West Virginia of Mars

11:53 am

An avalanche in the West Virginia of Mars
Click for original image.

Cool image time! The picture to the right, rotated, cropped, and reduced to post here, was taken on June 27, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

I have cropped it to focus on this one hill, about 900 feet high (though the elevation data from MRO is somewhat uncertain at this resolution), because of that major landslide on its northern slopes. At some point in the past a major piece of the exposed bedrock at the top broke off and slide about halfway down the mountain, almost as a unit, settling on the alluvial fill that comprises the bottom half of the hill’s flanks.

The bedrock surrounding the peak is also of interest because of its gullies, all of which were created by downward flowing material. Was it ice? Water? Sand? Or maybe a combination of two or three? If water or ice was involved it was a very long time ago, as this location is in the dry equatorial regions of Mars. There is little known near-surface ice here.
» Read more

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Scientists discover in Alaska the largest dinosaur track site in U.S.

9:51 am

New dinosaur track site in Alaska
Click for original image.

Paleontologists have discovered in Alaska a new dinosaur track site that appears to contain numerous exposed tracks on what is now a series of vertical walls covering an area larger than a football field.

The picture to the right shows the entire site. The darker flat walls that appear to be dimpled are the track sites, with the dimples the actual tracks.

Researchers at the University of Alaska Fairbanks made the discovery following a seven-hour hike into the Denali National Park and Preserve, and it is now the home of the largest known single dinosaur track site in the US state.

Like a geological triple-decker (or more) sandwich, the 20-story-high structure, pushed vertical due to tectonic plate convergence, reveals a cliff face of layer upon layer of preserved prints throughout time. “It’s not just one level of rock with tracks on it,” said Dustin Stewart, the paper’s lead author and a former UAF graduate student. “It is a sequence through time. Up until now, Denali had other track sites that are known, but nothing of this magnitude.”

The scientists think these now vertical walls, when horizontal in the past, marked a major water-hole location visited by numerous dinosaurs and other species.

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SpaceX report on first Starship/Superheavy launch failure submitted to FAA

9:34 am

Though we don’t know exactly when this was done, SpaceX has submitted to the FAA its final report on its investigation into the launch failure during the first Starship/Superheavy test launch in April, and now awaits the FAA’s response.

Now comes the FAA’s review of SpaceX’s investigation, fulfilling the agency’s role as the regulator charged with ensuring public safety during commercial launch operations. “When a final mishap report is approved, it will identify the corrective actions SpaceX must make,” an FAA spokesperson told Ars. “Separately, SpaceX must modify its license to incorporate those actions before receiving authorization to launch again.

Do not expect that response to be fast, or accepting. I predict the FAA will demand a lot more investigation and changes from SpaceX, actions that will take time to implement and be approved. Furthermore, I fully expect the FAA to take at least two months to review the SpaceX report before it issues those demands. As I have been predicting since May, there will be no Superheavy/Starship launch this year.

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Astra scrambling to find investors as its cash reserves dwindle

9:27 am

Despite a major reorganization, including laying off a quarter of its workforce, Astra now appears to be scrambling to find new investors even as its available cash reserves shrink.

The company’s financial runway is diminishing even as the company finds new sources of capital, such as a loan announced Aug. 4 that will provide Astra with $10.8 million and plans announced in July to sell up to $65 million in Astra stock in an “at-the-market” transaction. The company forecasted an adjusted EBITDA loss of $25 million to $29 million in the third quarter, ending the quarter with $15 million to $20 million of cash and equivalents on hand.

One analyst on the call expressed frustration with those projections, asking Astra executives for the “upside” of the company’s plans. Kemp emphasized the backlog of orders for its thrusters, which Astra said Aug. 4 was valued at $77 million, as well as orders from the U.S. Space Force and the Defense Innovation Unit for the Rocket 4.

However, he suggested the company’s efforts to focus on thruster production were intended to buy time for Astra as the company looks for new investors. The company said Aug. 4 it was working with PJT Partners, an investment bank, to identify “potential strategic investments in the Astra Spacecraft Engine business” that would bolster its finances. “We are actively focused on finding investors in these two businesses,” he said, noting that the company’s launch and spacecraft propulsion business lines are distinct and “in different phases of their development.”

Essentially the company is approaching a make-or-break moment. What I think is likely to happen is it will either go bankrupt, or be purchased outright by a new big-money investor who will take over the company entirely, replacing its present management with new people.

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Russia considering flying Proton rockets after 2025

9:19 am

According to a story today in Russia’s state-run TASS news outlet, the Khrunichev design bureau that builds Russia’s Proton rocket is in negotiation with Kazahkstan to use all the remaining Proton rockets available, even if that requires additional launches after 2025, the date Roscosmos had previously announced as when all Proton launches will cease.

The Khrunichev Center (part of the state-run space corporation Roscosmos) is actively working on future cooperation with the Kazakh side, including with regard to the use of the Proton carrier rocket, the center’s CEO Alexey Varochko told TASS. “The Khrunichev Center is actively working on various scenarios of mutually beneficial cooperation with the Kazakh side, including those involving the Proton carrier rocket,” Varochko said.

According to the official, the possibility of using Protons after 2025 may be considered only if both Russia and Kazakhstan give their consent.

It sounds like Khrunichev has some spare Protons, and wants to make some money from them, even if Roscosmos has forbid it. It also appears that there is political infighting within Roscosmos about the retirement of Proton and resulting the loss of government jobs at Khrunichev.

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Chandrayaan-3 reaches final lunar orbit for landing

9:12 am


Click for interactive map.

India’s Chandrayaan-3 spacecraft completed its final lunar orbital engine burn today, placing it in the correct orbit to release the lander Vikram, carrying the Pragyan rover.

The release is scheduled for tomorrow, with the landing targeting August 23, 2023. This will be India’s second attempt to softland an unmanned probe on the Moon. The Vikram lander of Chandrayaan-2 failed in 2019 during its final engine burn above the surface, crashing thereafter. Engineers at India’s space agency ISRO spent several years upgrading that lander to better insure this new attempt would succeed.

The lander has been given more ability to manoeuvre during the descent, the mission allows for a bigger 4 km x 2.4 km area for landing, more sensors have been added, one of the thrusters has been removed, and the legs of the lander have been made sturdier to allow for landing even at slightly higher velocity. More solar panels have also been added to ensure that the mission can go on even if the lander does not face the sun. More tests to see the capability of the lander in different situations were carried out to make Chandrayaan-3 more resilient.

Both Vikram and Russia’s Luna-25 lander, scheduled for touchdown on August 21, will land in the high southern latitudes of the Moon, at about 70 degrees. They are not going to the Moon’s south pole, as many news reports claim.

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August 15, 2023 Quick space links

3:23 pm

Courtesy of BtB’s stringer Jay.

 

 

  • NASA is developing a larger cubesat adapter for SLS

    • It will allow SLS to carry more cubesats that are bigger. Whether any commercial cubesat company will want to fly on it remains unknown, considering the uncertainty of any SLS launch. Jay also notes many comments on X about “cubesats dying while waiting for [an SLS] launch.”

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The impact that almost cracked Mars open

12:40 pm

An irregular pit chain on Mars
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on June 25, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists label an “irregular pit chain,” made up of a series of depressions scattered along a line that extends more than sixty miles to the northeast and to the southwest, beyond the edges of this high resolution close-up.

The chain likely indicates the existence of a fault line, or crack that created a void underground in which surface material is sinking. What makes this crack or fault line significant is how it and other similar fissures or cracks map across the Martian surface, extending for thousands of miles far beyond this particular pit chain and covering almost half the planet. In aggregate they imply the occurrence of past geological events so stupendous they are difficult to comprehend.
» Read more

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Ingenuity’s 55th flight completed

9:57 am

Overview map
Click for interactive map.

The Ingenuity engineering team today updated the helicopter’s flight log, showing that the 55th flight occurred on August 12, 2023, one day later than originally planned, and flew 881 feet for 143 seconds, 61 feet and 9 seconds longer than planned.

The overview map above shows the present locations of both Perseverance and Ingenuity. The green dot marks Ingenuity’s new position, while the blue dot marks where Perseverance presently sits in Jezero Crater. Based on this map, the main goal of the flight was apparently to fly Ingenuity over a route that Perseverance will likely use to return to its planned route, as indicated by the red dotted line.

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Webb confirms galaxy as one of the earliest known in the universe

9:27 am

The uncertainty of science: Using the spectroscopic instrument on the Webb Space Telescope, scientists have confirmed that one of the first galaxies found by Webb, dubbed Maisie’s Galaxy after the daughter of one scientist, is one of the earliest known in the universe, existing only 390 million years after when cosmologies say the Big Bang happened.

The data also showed that another one of these early galaxies spotted by Webb did not exist 250 million years after the Big Bang, but one billion years after, a date that better fits the theories about the early universe, based on the nature of this galaxy.

It turns out that hot gas in CEERS-93316 was emitting so much light in a few narrow frequency bands associated with oxygen and hydrogen that it made the galaxy appear much bluer than it really was. That blue cast mimicked the signature Finkelstein and others expected to see in very early galaxies. This is due to a quirk of the photometric method that happens only for objects with redshifts of about 4.9. Finkelstein says this was a case of bad luck. “This was a kind of weird case,” Finkelstein said. “Of the many tens of high redshift candidates that have been observed spectroscopically, this is the only instance of the true redshift being much less than our initial guess.”

Not only does this galaxy appear unnaturally blue, it also is much brighter than our current models predict for galaxies that formed so early in the universe. “It would have been really challenging to explain how the universe could create such a massive galaxy so soon,” Finkelstein said. “So, I think this was probably always the most likely outcome, because it was so extreme, so bright, at such an apparent high redshift.”

This science team is presently using Webb’s spectroscope to study ten early galaxies in order to better determine their age. Expect more results momentarily.

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