Category: Points of Information

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

First SLS launch will likely be delayed again

3:57 pm

Surprise! Surprise! NASA officials hinted at a conference October 10th that the first SLS launch will likely be delayed again, from late in 2020 to the first half of 2021.

This actually isn’t news. When NASA committed in July to doing a full static fire test of SLS’s first stage it almost guaranteed that the first launch could not happen before 2021.

What this means is that Trump’s desire to have a lunar landing, with SLS, by 2024, is practically impossible, even if Congress should agree to provide full funding, which it has not. SLS as designed simply cannot meet the launch pace required to get a lunar landing by 2024. It is too cumbersome, designed badly in terms of management and efficiency.

4 comments

Astronomers identify likely origin star for interstellar Comet Borisov

3:49 pm

Astronomers have backtracked the path of interstellar Comet Borisov to identify its likely origin.

When you rewind Comet Borisov’s path through space, you’ll find that 1 million years ago, the object passed just 5.7 light-years from the center of Kruger 60, moving just 2.13 miles per second (3.43 kilometers per second), the researchers wrote.

That’s fast in human terms —— about the top speed of an X-43A Scramjet, one of the fastest aircraft ever built. But an X-43A Scramjet can’t overcome the sun’s gravity to escape our solar system. And the researchers found that if the comet were really moving that slowly at a distance of no more than 6 light-years from Kruger 60, it probably wasn’t just passing by. That’s probably the star system it came from, they said. At some point in the distant past, Comet Borisov likely orbited those stars the way comets in our system orbit ours.

The remains some uncertainty about these calculations because astronomers are still gathering data on the comet’s path.

Leave a comment

New owners for Stratolaunch

6:07 pm

Capitalism in space: Stratolaunch announced today that it is now under new ownership, without identifying who that new owner is.

The company offered few other details in a statement released to media Friday. It was the first official update on the status of Stratolaunch since its huge rocket carrier aircraft completed its first — and so far only — test flight in April. “Stratolaunch LLC has transitioned ownership and is continuing regular operations,” the company said in a statement. “Our near-term launch vehicle development strategy focuses on providing customizable, reusable, and affordable rocket-powered testbed vehicles and associated flight services.

Stratolaunch did not identify its new owner Friday, or details on the type of launch vehicle it seeks to develop.

It would be a massive understatement to say their announcement is vague and lacking in details.

2 comments

Alexei Leonov, the first man to walk in space, dies

12:59 pm

R.I.P. Alexei Leonov, the first man to walk in space, passed away today at the age of 85.

Leonov also participated in the Apollo-Soyuz mission, the first joint mission between the U.S. and the Soviet Union.

The obituary notes Leonov’s sense of humor. I met Leonov in 2003 when I was in Moscow interviewing cosmonauts for my book Leaving Earth and found him to be a jovial, friendly, and open person.

He told me one story that I thought was significant. He noted the American practice in the 1960s to openly discuss everything that happened in its space effort worked to enhance our achievements, while the secrecy of the Russians only devalued anything they did. As he said,

The honesty of the American press made [those space achievements] more persuasive, more influential. Every little problem was written about in great detail, so that the image of the American astronauts grew, making them heroes. It was a much more clever approach. [Leaving Earth, p. 172]

Leonov for years would accompany astronauts on the bus on their way to the launchpad, providing encouragement. When Helen Sharman flew in space as a tourist in 1991 he gave her

…a ridiculous-looking, pink, frilly jumpsuit. “I got one of the ladies at the hotel to make it up for you,” Leonov said, his sweet round face lighting up in an infectious grin. “Just for fun.” [Leaving Earth, p. 301]

She wore it the first day in space, to the silly delight of everyone.

In the long endless future of humanity in space, only beginning now, Leonov will always hold an honored place.

7 comments

Leftist rioters attack Trump supporters leaving Trump rally

10:15 am

They’re coming for you next: As has become routine now from fascist Democratic Party supporters, a mob of several hundred rioters in Minnesota yesterday attacked Trump supporters as they were leaving last night’s Trump rally.

It appears individuals were surrounded and attacked. Others had their MAGA hats stolen, which were then burned. In addition, reporters were maced, and it also appears the police stood by while this was happening.

The Democratic mayor of Minneapolis vehemently opposed this rally, trying and failing to squelch it with an unreasonable security fee. It appears he has decided to allow violence to act for him instead.

This is today’s Democratic Party, a fascist operation that tries to squelch the free speech of its political opponents, by any means necessary. If legal manipulation fails, they then send out their jack-booted thugs.

6 comments

Air Force selects 8 launch companies for future contracts

9:56 am

Capitalism in space: The Air Force yesterday announced that it has selected eight launch companies as part of a program allowing it to order future launch contracts quickly.

SpaceX, Xbow Launch Systems, Northrop Grumman, Firefly Aerospace, United Launch Alliance, Aevum, Vox Space and Rocket Lab have been selected to provide launch services in the Orbital Services Program-4 [OSP-4] — a $986 million procurement of launch services over nine years. The Air Force announced the winners Oct. 10.

OSP-4 is designed to accommodate small and medium payloads greater than 400 lbs. and providers have to be able to deliver these payloads to orbit within 12 to 24 months after receiving an order. The program is managed by the Air Force Space and Missile Systems Center’s Launch Enterprise Small Launch and Targets Division at Kirtland Air Force Base, New Mexico.

…The OSP-4 multi-vendor deal is known as a “multiple-award, indefinite-delivery/indefinite-quantity” contract. The eight companies will be awarded $50,000 as the contract’s minimum guarantee. Under [this arrangement], the Air Force will compete as many as 20 missions among the awardees.

The company list includes every operational rocket company (SpaceX, Northrop Grumann, ULA, Rocket Lab), as well as several in development (Xbow, Firefly, Aevum, Vox). It is interesting that several other developing rocket companies are not included (Blue Origin, Relativity, Vector). Vector has suspended operations because of financial issues, but Relativity and Blue Origin both appear to be moving forward with full financing. Meanwhile, I have until now never heard of Xbow, Aevum, and Vox. One wonders the reasoning behind their selection.

This selection is separate from the Air Force’s big rocket contracting process, where the military says it will very soon pick two companies to launch its big satellites for the next decade.

4 comments

FAA gives Rocket Lab an umbrella 5-year launch license

9:41 am

Capitalism in space: The FAA has awarded the smallsat launch company Rocket Lab a 5-year launch license, allowing it to streamline its regulatory process so that it can up its launch pace.

Rocket Lab has received a new five-year Launch Operator License from the Federal Aviation Administration, which grants it permission to do multiple launches of its Electron rocket from its LC-1 launch site in New Zealand without having to seek individual clearance for each one. While not the only limiting factor, this should help Rocket Lab increase the frequency of its launches from LC-1, servicing more customers more often for commercial small satellite customers.

While Rocket Lab has yet to achieve its goal of launches every two weeks, or even one per month, this license should at least remove one obstacle.

One comment

Northrop Grumman buys back Pegasus rockets from Stratolaunch

9:35 am

Northrop Grumman announced this week that it has bought back from Stratolaunch the two Pegasus rockets that company had bought for the purpose of launch from its giant Roc airplane.

Phil Joyce, vice president of space launch programs at Northrop Grumman, said this week that the company is trying to sell the launches using the two remaining Pegasus XL rockets, and officials plan to keep the Pegasus rocket’s L-1011 carrier jet flying for at least five or 10 more years.

The airborne launch of NASA’s Ionospheric Connection Explorer, or ICON, scientific satellite Thursday night off Florida’s east coast is the final scheduled flight of a Pegasus XL rocket. Variants of the solid-fueled Pegasus rocket have flown on 43 satellite delivery missions since 1990.

“We actually purchased those back (from Stratolaunch),” Joyce said in an interview with Spaceflight Now. “So they’re in a very advanced state of integration, which means they’re available for a very rapid response launch. We could launch one of those in six months, the second one probably in eight (months).

This buy back tells us two things, both negative, about both companies. With Stratolaunch, it means they have abandoned entirely the idea of launching satellites using a combination of Roc and Pegasus. The reasons are unclear, but I would guess that they have either discovered the engineering didn’t work, or the economics made the combination unprofitable, being too expensive.

As for Pegasus, it appears the rocket has no further contracts, and has had so much trouble drumming up business that they have decided not to build more. Instead, they are going to try to get contracts for these already built Pegasuses, and are likely going to offer lower prices for them. Even if this works, it does appear that we are about to see the end of the Pegasus rocket.

Created in the early 1980s by Orbital Sciences (later Orbital ATK) as a cheaper alternative to the expensive big rockets of the time, Pegasus had a viable business model for years. Slowly over time however its launch price rose, until it was no longer very cheap. And when SpaceX and other new cheaper alternatives arrived in the past six years, the company, eventually absorbed by Northrop Grumman, was unable to remain competitive.

The irony here is that Northrop Grumman purchased Orbital ATK expressly to allow it to enter the launch market, using both Pegasus and Antares. With Pegasus gone, and Antares still failing to find any customers other than NASA, it doesn’t look like the merger is paying off well for the company.

2 comments

1st launch attempt tonight on Pegasus aborted; 2nd attempt a success

6:38 pm

Less than two minutes from launch mission control aborted the launch of the Pegasus rocket because of a communications problem between mission control and the flight crew on L-1011 aircraft.

This is after more than a year’s delay because of a difficult-to-pin-down problem with the Pegasus rocket itself.

They are presently working towards a second launch attempt tonight in about thirty minutes. You can follow this at the link above. Note that the NASA television feed is delayed about two minutes from the comment feed below. It is also filled with NASA’s incessant propaganda and pandering documentaries.

Pegasus has launched ICON and the first two stages have done their job. They are now coasting to the point where the third stage will fire. That coast is complete, the third stage has completed its job and ICON is in orbit.

This is Northrop Grumman’s second launch in 2019, so the leader rankings for the 2019 launch race remains unchanged:

19 China
17 Russia
10 SpaceX
6 Europe (Arianespace)

The U.S. however has regained its lead over China, 20 to 19, in the national rankings.

One comment

Bridenstine’s visit to SpaceX a non-story

6:16 pm

Link here. Essentially he just reiterated his desire to have the private capsules being built by SpaceX and Boeing flying by early next year.

Essentially, the announcements in the last few days by Musk and Boeing about their upcoming testing and launch schedule for both Dragon and Starliner respectively took the steam out of his SpaceX visit.

In fact, I wonder what the politics were behind this. It is almost as if both companies wanted to take the steam out of his appearance here. Most intriguing.

7 comments

Ice suspected in both old and young lunar craters

1:46 pm

The uncertainty of science: New research of the craters where ice is suspected to exist on the Moon suggests that the ice is found in both young and old craters, which also suggests both that it comes from multiple sources and that some has been deposited more recently.

The majority of the reported ice deposits are found within large craters formed about 3.1 billion years or longer ago, the study found. Since the ice can’t be any older than the crater, that puts an upper bound on the age of the ice. Just because the crater is old doesn’t mean that the ice within it is also that old too, the researchers say, but in this case there’s reason to believe the ice is indeed old. The deposits have a patchy distribution across crater floors, which suggests that the ice has been battered by micrometeorite impacts and other debris over a long period of time.

If those reported ice deposits are indeed ancient, that could have significant implications in terms of exploration and potential resource utilization, the researchers say. “There have been models of bombardment through time showing that ice starts to concentrate with depth,” Deutsch said. “So if you have a surface layer that’s old, you’d expect more underneath.”

While the majority of ice was in the ancient craters, the researchers also found evidence for ice in smaller craters that, judging by their sharp, well-defined features, appear to be quite fresh. That suggests that some of the deposits on the south pole got there relatively recently. “That was a surprise,” Deutsch said. “There hadn’t really been any observations of ice in younger cold traps before.”

If there are indeed deposits of different ages, the researchers say, that suggests they may also have different sources. Older ice could have been sourced from water-bearing comets and asteroids impacting the surface, or through volcanic activity that drew water from deep within the Moon. But there aren’t many big water-bearing impactors around in recent times, and volcanism is thought to have ceased on the Moon over a billion years ago. So more recent ice deposits would require different sources — perhaps bombardment from pea-sized micrometeorites or implantation by solar wind.

I must emphasize that there is much uncertainty here. Most fundamental is the fact that at this moment we still really do not have a solid confirmation of the presence of ice in these permanently shadowed craters, only orbital data that suggests the presence of hydrogen, which scientists believe can only be there if it is locked in water molecules. This is not yet proven however.

It is intriguing however the evidence suggests ice in both young and old craters. This implies either some on-going process to put water there, or a series of specific but different events over time.

Leave a comment

More “Free Hong Kong” protesters at NBA-Chinese exhibition games

9:30 am

Maybe we aren’t sheep: A group of protesters showed up at a Washington Wizards exhibition game yesterday against a Chinese basketball team with more “Free Hong Kong” signs, chanting the same throughout the game.

NBA officials however continue to kowtow to China’s demand to squelch these American protests, in America:

During the pregame singing of the Chinese national anthem, there were additional protests, with activists holding up signs and yelling, “Free Hong Kong.” One couple displaying a Tibetan flag left after being confronted by security. Yells of “Free Hong Kong” continued to ring out over the course of the game, as protesters migrated to different sections of the arena.

Security confiscated a “Free Hong Kong” sign from a group of protesters sporting the t-shirts. Later in the first quarter, the protesters displayed a smaller sign reading “Google Uyghurs,”—referring to Chinese Muslims incarcerated in state prison camps—which was also confiscated. [emphasis mine]

Meanwhile, the satirical website, the Babylon Bee, captures the stupidity and anti-Americanism of the NBA perfectly: NBA Now Requiring All Players To Stand For Chinese National Anthem, adding that “Anyone who doesn’t comply will be shot, a beloved Chinese custom that should further smooth things over with the authoritarian regime.”

8 comments

Mars Express looks at Martian river relic

9:18 am

Mars Express perspective view of Nirgal Vallis
Click for full image.

The Mars Express science team today released a mosaic produced by the orbiter’s high resolution camera of the 300 mile long relic river valley Nirgal Vallis. The image to the right, reduced to post here, is the oblique view that was produced by computer using the camera’s stereo images.

This ancient valley system is named Nirgal Vallis, and was once filled with running water that spread across Mars. By exploring the characteristics of the surrounding craters, scientists estimate the system’s age to be between 3.5 and 4 billion years old.

The part of Nirgal Vallis captured in these images lies towards the western end of the river system, where it is slowly spreading out and dissipating; the eastern end is far less branched and more clearly defined as a single valley, and opens out into the large Uzboi Vallis – the suspected location of a large, ancient lake that has long since dried up.

Nirgal Vallis is a typical example of a feature known as an amphitheatre-headed valley. As the name suggests, rather than ending bluntly or sharply, the ends of these tributaries have the characteristic semi-circular, rounded shape of an Ancient Greek amphitheatre. Such valleys also typically have steep walls, smooth floors, and, if sliced through at a cross-section, adopt a ‘U’ shape. The valleys pictured here are about 200 m deep and 2 km wide, and their floors are covered in sandy dunes; the appearance of these dunes indicates that martian winds tend to blow roughly parallel to the valley walls.

Unlike the high resolution camera on Mars Reconnaissance Orbiter (MRO), which is for taking close-up images of specific surface features, Mars Express is producing a high resolution survey of the entire planet. Its camera does not have quite the same resolution, but as it is taking wider images that’s okay.

What is unfortunate is the European Space Agency’s policy for releasing those images. Unlike MRO, they do not make them all available to the public instantly. Instead, they periodically do press releases like today’s, highlighting a specific region or single large feature. As a result, Mars Express does not get the press it deserves.

One comment

Two fans removed from NBA game for holding “Free Hong Kong” signs

12:44 pm

They’re coming for you next: Two fans were removed from an NBA exhibition game in Philadelphia (home to the Liberty Bell) yesterday for holding up “Free Hong Kong” signs.

This is a continuation of the recent story which started when the general manager of the NBA’s Houston Rockets, Daryl Morey, had tweeted support for the Hong Kong protesters. Because the NBA has many financial ties with China (including a training camp in a region in China where they also have their death camps), the NBA demanded and got an apology from that general manager, and has since been taking whatever action it can to squelch any criticism of China within or linked to the league. The removal of these two fans is part of that oppressive campaign, all aligned with this demand by China:

“We are strongly dissatisfied and we oppose [any] claim to support Morey’s right of free expression. We believe that any speech that challenges national sovereignty and social stability is not within the scope of freedom of speech,” CCTV said in its statement in Chinese, which was translated by CNBC.

What disturbs me most about this story is that it could not have happened if only the NBA had demanded it. It required the willing cooperation of the Philadelphia 76ers management, the security detail at the stadium, and the crowd surrounding these fans.

In the past all Americans would have told the Chinese to go jump in a lake. We would have laughed at these demands, even those businesses whose financial dealings with China that might be lost by taking such a stand.

If anything, Americans in the past would have suddenly started showing up at every NBA game, carrying hundreds of “Free Hong Kong” signs. At this moment I see no evidence of this happening. Americans apparently are now the sheep that dictatorships like China can nonchalantly rule, at their whim.

4 comments

California utility cuts power to more than a million customers

11:56 am

Venezuela comes to California: California’s biggest electric utility today cut off power to more than one million people in order to prevent wildfires.

The utility said it cut power to more than 500,000 customers in Northern California and that it plans to gradually turn off electricity to nearly 800,000 customers to prevent its equipment from starting wildfires during hot, windy weather. A second group of about 234,000 customers will lose power starting at noon, the utility said. The power outages are expected to affect about 2.5 million people.

PG&E filed for Chapter 11 bankruptcy protection in late January after facing liabilities stemming from wildfires in Northern California that occurred over the past two years.

The utility plans to shut off power in parts of 34 northern, central and coastal California counties to reduce the chance of fierce winds knocking down or toppling trees into power lines during a siege of hot, dry, gusty weather.

This approach doesn’t really make any sense. It is like shutting down all car traffic for miles around schools at the start and end of each day, in the hope it will prevent kids getting hit by cars. It won’t, but it will prevent normal business from proceeding.

PG&E however is taking this nonsensical action because of the legal atmosphere in California. They have been made liable for any future wildfires. They eventually intend to upgrade equipment to prevent it from contributing to future fires, but that costs money the bankrupt power company doesn’t have. And even if they did it they would probably still be blamed by the anti-capitalist forces that now run California’s increasingly radical government.

Unless Californians change their government, expect worse in the coming years. As I say, we need only look at Venezuela to see their future.

6 comments

Justice expands investigation into coup attempt against Trump

9:15 am

The Justice Department investigation by John Durham into the Obama-initiated spying on the Trump campaign, followed by an effort to frame Trump with the fake accusation that he colluded with the Russians, has now been expanded.

Fox News previously reported that Durham would be reviewing the days leading up to the 2016 election and through the inauguration.

However, based on what he has been finding, Durham has expanded his investigation adding agents and resources, the senior administration officials said. The timeline has grown from the beginning of the probe through the election and now has included a post-election timeline through the spring of 2017, up to when Robert Mueller was named special counsel.

Meanwhile, the Democrats effort to frame Trump again, this time in connection with his phone call with the head of Ukraine, continues to unravel. Some recent stories:

As I noted in my October 1 essay on the fake nature of the Democrat’s impeachment effort, this mirrors the situation with their fake Russian-collusion accusations. As more evidence is uncovered the more untrustworthy those accusations appear.

I remain skeptical at the seriousness of the Trump Justice Department’s new investigation however. The MO of the Washington Republican crowd so far has been to gather information that shows the corruption within the federal government, release it, and then do nothing. Unless they move forward with actual indictments this will all be another variation of failure theater.

UPDATE: This article, Who Does the Whistleblower Know?, provides a nice timeline and summary of what we presently know, all of which appear to point to real corruption on the part of both Joe Biden and the Democrats in Congress and the executive bureaucracy.

6 comments

Musk confirms: Dragon launch abort test in about 10 weeks

8:53 am

Captalism in space: According to a series of tweets by SpaceX head Elon Musk today, the company now expects they will be ready to fly their launch abort test of their Dragon capsule in about ten weeks, about the third week in December.

Musk noted that they need only do a static fire test and then “reconfigure for flight.”

Expect more detailed information at tomorrow’s press event at SpaceX in California with both Musk and NASA administrator Jim Bridenstine.

2 comments

First images from Chandrayaan-2

8:45 am

One of Chandrayaan-2's first hi-res images
Click for the full image.

India has released the first image from the high resolution camera on its Chandrayaan-2 lunar orbiter.

The image on the right, cropped to post here, is from that image and shows objects as small as 10 inches across, which is better than the 20 inch resolution obtained by the U.S.’s Lunar Reconnaissance Orbiter (LRO). Depending on orbit, they should therefore eventually be able to image their crashed Vikram lander with more detail. It also means they can supplement and improve on data from LRO, a significant achievement for India.

Additionally they report that all instruments on board are functioning normally.

Leave a comment

Proton flies last commercial mission

8:23 am

Scheduled for retirement by Russia and having its entire commercial business taken by SpaceX, Russia’s Proton rocket today successfully launched its last commercial mission.

The primary payload was a European communications satellite. The secondary payload is more significant as it is Northrop Grumman’s Mission Extension Vehicle (MEV-1), designed to grab defunct satellites that are out of fuel and bring them back to life using its own fuel and engines.

The docking mechanism of the MEV spacecraft allows it to link up with a spacecraft which carries no specialized rendezvous and docking hardware. According to Northrop Grumman, MEV, can use its proximity sensors and docking hardware to reliably attach itself to 80 percent of typical satellites deployed in geostationary orbit. The developer also said that after completing the work assisting the first spacecraft, the MEV vehicle could be undocked and moved multiple times during its more than 15-year operational life span to support satellites from other customers.

They plan to revive one of Intelsat’s satellites and operate it for five years.

The leaders in the 2019 launch race:

19 China
17 Russia
10 SpaceX
6 Europe (Arianespace)

The U.S. and China remain tied at 19 in the national rankings.

One comment

Boeing to buy $20 million minority stake in Virgin Galactic

7:25 pm

HorizonX, a venture capital division of Boeing, today announced that it will purchase a $20 million minority stake in Virgini Galactic once the company goes public later this year.

Boeing’s venture arm HorizonX announced on Tuesday it will invest $20 million in Sir Richard Branson’s space tourism company Virgin Galactic to help develop the technologies needed to make hypersonic air travel possible one day.

All I can say is I do not understand how Richard Branson can fool so many people for so long for so much, while delivering practically nothing.

Hat tip Robert Pratt of Pratt on Texas.

3 comments

World’s largest camera lens arrives safely for assembly into LSST

1:05 pm

Link here. The lens will be part of the camera used in the Large Synoptic Survey Telescope (LSST), planned for first light in Chile in 2021, and the video at the link showed the moment they removed the shipping container to inspect the lens to make sure it wasn’t damaged during transport.

The lens will next be installed inside the 3.2 gigapixel camera that will be used by LSST, which will do the following:

The LSST will live on a mountain in Chile, where it will use a 3.2-gigapixel camera and some massive optics to capture a 15-second exposure of the night sky every 20 seconds. At this rate, the LSST will be able to image the entire visible southern sky every few nights.

.

I have embedded the video below the fold. This five foot diameter lens is quite astonishing, though the technology that produced it is merely a variation of the same engineering that now routinely produces telescope mirrors 26 feet across.

Hat tip Mike Nelson.
» Read more

4 comments

Swirls and layers in Martian depression

12:42 pm

Close-up on swirls and layers

Context of depressions in Columbus Crater
Click for full resolution image.

Cool image time! The southern highlands of Mars is littered with numerous craters, making it look from a distance not unlike the Moon. A closer inspection of each crater and feature, however has consistently revealed a much more complex history than seen on the Moon, with the origins of many features often difficult to explain.

The two images on the right, rotated, cropped, and reduced to post here, shows one such feature in the floor of one southern highlands crater, dubbed Columbus Crater. The top image is a close-up of the area shown by the box in the bottom image.

The uncaptioned full photograph was taken on May 20, 2019 by the high resolution camera on Mars Reconnaissance Orbiter (MRO) and was simply titled “Depression in Columbus Crater.” Since the photo included two large depressions, as shown in the wider view in the bottom image, I’m not sure which depression this title refers. In both cases the features do not appear to be impact craters. The top depression is far too irregular, while both do not have the upraised rims that are found on most impact craters.

I have zoomed into the top depression because of its many swirls and layers. On Earth such terrain is usually caused by either water or wind erosion, slowly carving a smooth path across multiple geological layers. Here, there is no obvious evidence of any flows in any direction. Something ate out the material in this depression, exposing the many layers, but what is not clear.

The lower depression reminds me of sinkholes on Earth, where the ground is subsiding into a void below ground The same process could have also formed the top depression.

The surrounding terrain is equally baffling, resembling the eroded surface of an ice block that has been sprayed with warm water. In fact, the entire floor of Columbus Crater appears to have intrigued planetary scientists, as they have requested a lot of images of it from MRO. So far they do not have enough of these images to produce a full map. Since the terrain appears to change drastically over short distances, it is therefore hard to fit the geology of each image together. The overall context is missing.

When I first saw this image I tried to reach the scientist who requested it in the hope he might provide me a more nuanced explanation of what we see here, but despite repeated requests he never responded. Therefore let me propose one theory, based on my limited knowledge of Martian geology.
» Read more

One comment

UN faces financial shortfall

9:24 am

My heart bleeds: The head of the UN today announced that it faces a financial shortfall in October that might force it to cut its bloated budget and reduce the number of posh conferences it holds.

The United Nations (UN) is running a deficit of $230 million, Secretary General Antonio Guterres said on Monday, and may run out of money by the end of October.

In a letter intended for the 37,000 employees at the UN secretariat and obtained by AFP, Guterres said unspecified “additional stop-gap measures” would have to be taken to ensure salaries and entitlements are paid. “Member States have paid only 70 per cent of the total amount needed for our regular budget operations in 2019. This translates into a cash shortage of $230 million at the end of September. We run the risk of depleting our backup liquidity reserves by the end of the month,” he wrote.

To cut costs, Guterres mentioned postponing conferences and meetings and reducing services, while also restricting official travel to only essential activities and taking measures to save energy.

For a short but detailed explanation of the present status of the U.S. policy and politics towards funding the U.N., see this Congressional Research document [pdf]. It appears that the effort by the Trump administration to stop funding certain UN operations, including Palestinian terrorist organizations, might be a major contributing factor to this shortfall.

7 comments

Russia strips Sea Launch platform of foreign equipment

9:02 am

In an effort to get the U.S. government to allow them to transport the Sea Launch platform from California to a Russia port in the far east, the Russians have now stripped the platform of all Boeing and Ukrainian equipment.

Originally built by a partnership of Russia, Ukraine, and Boeing, the platform is supposedly now owned by S7, a Russian airline company, but in truth it is controlled entirely by the Russian government, which wishes to refit it to launch the new Soyuz-5 rocket they are now developing.

Leave a comment

Bridenstine to hold press event at SpaceX on Oct 10

8:56 am

NASA yesterday announced that its administrator Jim Bridenstine will hold a press event with Elon Musk at SpaceX headquarters this coming Thursday, October 10.

Also at this event will be the two astronauts who have been assigned to fly on the first demo mission of SpaceX’s manned Dragon capsule.

I am speculating, but I suspect that they will be announcing the launch schedule for both this manned mission as well the launch abort test that must precede it.

3 comments

Astronomers find 20 more moons orbiting Saturn

10:21 am

Astronomers have discovered an additional twenty moons orbiting Saturn, bringing the total known to 82, three more than the 79 moons known to circle Jupiter.

Each of the newly discovered moons is about five kilometers, or three miles, in diameter. Seventeen of them orbit the planet backwards, or in a retrograde direction, meaning their movement is opposite of the planet’s rotation around its axis. The other three moons orbit in the prograde—the same direction as Saturn rotates.

Two of the prograde moons are closer to the planet and take about two years to travel once around Saturn. The more-distant retrograde moons and one of the prograde moons each take more than three years to complete an orbit.

The astronomers have also created a contest allowing the public to help name these new moons.

I will make one prediction: They are going to find many more.

In fact, Saturn’s rings and its numerous moons raise the question of what defines a moon. At present, a moon is defined as any object orbiting a planet, regardless of size. With Saturn’s rings however we have millions of objects orbiting that planet, many very tiny. It seems we have never put a size limit on the definition of a moon, and really need to.

5 comments

The drying out of Mars

10:05 am

Edge of wash
The Murray formation as seen in 2017

A new paper based on data gathered by the rover Curiosity in 2017 when it was lower on the slopes of Mount Sharp, as well as data obtained more recently at higher elevations, has confirmed that the past Martian environment of Gale Crater was wetter, and that deeper lakes formed lower down, as one would expect.

In 2017 Curiosity was traveling through a geological layer dubbed the Murray formation. It has since climbed upward through the hematite formation forming a ridge the scientists dubbed Vera Rubin Ridge to reach the clay formation, where the rover presently sits. Above it lies the sulfate-bearing unit, where the terrain begins to be get steeper with many very dramatic geological formations.

Looking across the entirety of Curiosity’s journey, which began in 2012, the science team sees a cycle of wet to dry across long timescales on Mars. “As we climb Mount Sharp, we see an overall trend from a wet landscape to a drier one,” said Curiosity Project Scientist Ashwin Vasavada of NASA’s Jet Propulsion Laboratory in Pasadena, California. JPL leads the Mars Science Laboratory mission that Curiosity is a part of. “But that trend didn’t necessarily occur in a linear fashion. More likely, it was messy, including drier periods, like what we’re seeing at Sutton Island, followed by wetter periods, like what we’re seeing in the ‘clay-bearing unit’ that Curiosity is exploring today.”

Up until now, the rover has encountered lots of flat sediment layers that had been gently deposited at the bottom of a lake [the Murray Formation]. Team member Chris Fedo, who specializes in the study of sedimentary layers at the University of Tennessee, noted that Curiosity is currently running across large rock structures [Vera Rubin Ridge and the clay formation] that could have formed only in a higher-energy environment such as a windswept area or flowing streams.

Wind or flowing water piles sediment into layers that gradually incline. When they harden into rock, they become large structures similar to “Teal Ridge,” which Curiosity investigated this past summer [in the clay formation]. “Finding inclined layers represents a major change, where the landscape isn’t completely underwater anymore,” said Fedo. “We may have left the era of deep lakes behind.”

Curiosity has already spied more inclined layers in the distant sulfate-bearing unit. The science team plans to drive there in the next couple years and investigate its many rock structures. If they formed in drier conditions that persisted for a long period, that might mean that the clay-bearing unit represents an in-between stage – a gateway to a different era in Gale Crater’s watery history.

None of these results are really surprising. You would expect lakes in the flatter lower elevations and high-energy streams and flows in the steeper higher elevations. Confirming this geology however is a big deal, especially because they are beginning to map out in detail the nature of these geological processes on Mars, an alien world with a different make-up and gravity from Earth.

Below the fold is the Curiosity science teams overall map, released in May 2019, showing the rover’s future route up to that sulfate unit, with additional annotations by me and reduced to post here.
» Read more

Leave a comment
1 … 360 361 362 363 364 … 935