Category: Points of Information

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

The state of water on the Moon

8:31 am

Link here. The article describes new research that suggests the ice thought to exist in the Moon’s permanently shadowed polar craters is constantly being reworked, with some being leached away as other processes (comets, solar wind) replenish the losses.

They also theorize that this process might be making it easier to reach that water.

For forthcoming science and exploration, the scattering of water particles could be great news. It means astronauts may need not to subject themselves and their instruments to the harsh environment of shadowed crater floors in order to find water-rich soil — they could just find it in sunny regions nearby. “This research is telling us that meteoroids are doing some of the work for us and transporting material from the coldest places to some of the boundary regions where astronauts can access it with a solar-powered rover,” Hurley said.

To put it mildly, there is a lot of uncertainty about this last conclusion.

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Chandayaan-2 completes first orbit burn

8:18 am

India’s lunar orbiter/lander/rover Chandrayaan-2 yesterday completed its first orbital engine burn, raising its apogee, the high point in its orbit, 6,000 kilometers to about 51,000.

This boost meant that Isro scientists have to perform one less manoeuvre in the Earth orbit than what was planned earlier. According to the path chalked out for Chandrayaan-2 before the launch, the on-board propulsion systems were to be fired six times in Earth orbit – five times to raise the apogee and once to raise the perigee. Now, only four more “burns”, or firing of the propulsion system, will be needed on July 26 and 29, and August 2 and 6, to reach the final orbit of 233.2 x 143,953km.

…With a final boost on On August 14, Chandrayaan-2 will escape Earth’s orbit and begin its seven-day journey towards the moon. The spacecraft is scheduled to reach the moon orbit on August 20.

Once in lunar orbit they plan four more burns to lower the spacecraft to a 100 kilometer circular orbit, where the lander/rover will release and begin their own lowering process aimed for a September 7 landing.

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End coming for twin Van Allen spacecraft

8:07 am

Engineers at the Applied Physics Lab in Maryland on July 19 turned off one of the two Van Allen probes, with the second probe expected to receive a similar command later this year.

As expected, following final de-orbit maneuvers in February of this year, the spacecraft has used its remaining propellant to keep its solar panels pointed at the Sun and is now out of fuel. Since it depends on the Sun to provide power to the instruments, and can no longer orient itself to acquire power, the spacecraft has been turned off. The spacecraft is in a stable, circular orbit around Earth and, in about 15 years, will re-enter the atmosphere and burn up safely. The de-orbit maneuvers in February were designed to ensure this would happen and prevent the spacecraft from becoming “space junk” in orbit.

The other Van Allen Probes spacecraft, spacecraft A, is expected to operate normally until early September.

Both spacecraft functioned five years longer than expected, and during that time discovered that there are three Van Allen belts, not two as previously thought.

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China smallsat company succeeds in orbital launch

7:58 am

A Chinese semi-private company, iSpace, successfully launched two smallsats into orbit today.

iSpace’s Hyperbola-1 rocket blasted off from the Jiuquan Satellite Launch Centre at 1 p.m. (0500 GMT) Thursday, sending two satellites and payloads into a predetermined orbit, the company said in a statement on its official Wechat account.

The successful orbital launch was preceded by two failures since late last year by other startups.

More here.

I am very reluctant to call this company, along with the other Chinese smallsat companies OneSpace and LandSpace, a private commercial firm. While it might get investment capital within China, it is very clearly supervised closely by the government. Moreover, its use of solid rocket motors, as noted in the second link, strongly suggests it is taking advantage of Chinese military technology, something that could only happen under government control. From the second link:

It’s unclear how much it cost for iSpace to build the rocket. Chinese state-owned automaker Changan’s passenger car brand Oushang said it would sponsor the launch, but didn’t specify the amount. In OneSpace’s case, the firm’s nine-meter-tall, solid-propellent rocket cost the company $78 million to design, build, and launch. iSpace’s main private backers (link in Chinese) include domestic private-equity firms CDH Investments and Matrix Partners.

iSpace didn’t immediately respond to requests for comment.

But private space companies are also getting state support in China. All of the private launches so far, for example, have taken place at Jiuquan—Elon Musk’s SpaceX recently launched a rocket at NASA’s Kennedy Space Center, while its main customer is the US Air Force. What’s different in China is the constraints that come with having state backing. In June, China rolled out a set of rules that restrict what private companies can develop and manufacture. It’s unclear if that may restrict private companies’ capabilities in building larger rockets that could rival state rocket builders. [emphasis mine]

The money for this comes from state-owned companies. The technology comes from military hardware. The goals are almost all military in nature. I would also bet, because of the lack of information released, that the satellites launched today were military payloads. This is hardly an independent private company competing on the open market.

Nonetheless, this success gives China a new capability and raises its status as a world space power.

The leaders in the 2019 launch race:

10 China
9 Russia
8 SpaceX
5 Europe (Arianespace)
4 India

The U.S. still leads China 14 to 10 in the national rankings.

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Starhopper’s 1st test hop aborts

11:40 pm

Capitalism in space: SpaceX’s first attempt to fly Starhopper untethered in a short vertical flight was aborted only a few seconds after engine ignition.

Video of the test is below the fold. The vehicle never leaves the ground, and there are flames visible near its top, something one should not see. Obviously this is a development program, so failures like this are to be expected. More significant is the speed in which the company is moving. It is only a week since their last StarHopper test, which also had issues. Rather than take years to move forward (like NASA), they are pushing forward aggressively.
» Read more

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Mueller’s testimony today proves witch hunt failed

6:43 pm

There have been numerous stories today in all the press, both left and right, about Robert Mueller’s testimony today in Congress, mostly concluding that Mueller came off very badly, thereby bursting the balloon of the continuing empty and largely disproved accusations by the Democrats that Trump colluded with Russia during the 2016 election. If anything Mueller proved by his stumbling answers plus his refusal to answer more than 150 questions that his effort was at best incompetent, and at worst a partisan witch hunt.

This conclusion is not a surprise however to anyone who has paid even the slightest close attention Mueller’s work, both now and in the past.

However, the short clip below the fold, taken from Mueller’s testimony today, best represents how corrupt and incompetent Mueller really is. It took place during questioning by a friendly Democratic congressman as he was attempting to demonstrate how honorable and fair-minded Mueller is. Instead, it proved why almost everything attempted by our so-called elites in Washington fails. They don’t have to be corrupt because they are also incompetent.

The clip comes from a story at PJ Media. For Mueller and the Democrats, it is embarrassing. For Trump and the Republicans it is laughable. For the American people it is distressing, because we all know that Mueller is very stereotypical of most of those running Washington.
» Read more

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Possibility of meteorites from bright fireball in Ontario

1:54 pm

Astronomers were successfully able to track and photograph a bright fireball over Canada early today, and think it is strongly possible that pieces of it might have hit the ground.

Preliminary results indicate that the fireball first became visible just south of Oshawa over Lake Ontario at an altitude of 93 km. It traveled over Clarington and passed just west of Peterborough before extinguishing just west of Bancroft. The fireball rivaled the full moon in brightness and had a number of bright flares near the end of its flight. The meteoroid was roughly the size of a small beachball (approx. 30cm in diameter) and likely dropped a small number of meteorite fragments in the tens to hundreds of grams size-range on the ground.

Brown and his collaborators at Western and the Royal Ontario Museum are interested in connecting with people from the area of the potential fall, who may have heard anything unusual, or who may have found possible meteorites.

…Meteorites can be recognized by their dark, often scalloped exterior. Usually they will be denser than a ‘normal’ rock and will often be attracted to a magnet due to their metal content. Meteorites are not dangerous, but if recovered, it is best to place them in a clean plastic bag or wrap them in aluminum foil. They should also be handled as little as possible to help preserve their scientific value. In Canada, meteorites belong to the owner of the land upon which they are found. If individuals plan to search, they should always obtain permission of the land-owner before venturing onto private land.

If you live up in that neck of the woods, take a look around. You might find something.

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Off to Huntsville, Alabama

1:32 pm

I am about to leave for Huntsville, Alabama to give a lecture: tomorrow, July 25, 2019, at 6 pm (Eastern), at the National Geographic Theater located at the US Space and Rocket Center.

This event is part of their “Pass the Torch” lecture series. My subject: How Apollo 8, not Apollo 11, won the 1960s space race and changed the world

If you are Huntsville or nearby please consider coming by. It will be a great event.

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Images confirm LightSail-2 deployment success

1:25 pm

LightSail-2 sail deployed
Click for full resolution image.

Capitalism in space: The LightSail-2 engineering team has now confirmed, based on images from the cubesat, that its light sail has successfully deployed.

Flight controllers at Cal Poly San Luis Obispo in California commanded the spacecraft to deploy its solar sails yesterday at about 11:47 PDT (18:47 UTC). Images captured during the deployment sequence and downloaded today show the 32-square-meter sail, which is about the size of a boxing ring, deploying as the spacecraft flew south of the continental United States.

Image caption: This image was taken during the LightSail 2 sail deployment sequence on 23 July 2019 at 11:48 PDT (18:48 UTC). Baja California and Mexico are visible in the background. LightSail 2’s dual 185-degree fisheye camera lenses can each capture more than half of the sail. This image has been de-distorted and color corrected.

To the right is a reduced version of this image. As they note, the sail is distorted because of the fisheye nature of the camera lens. Nonetheless, it looks like the sail is deployed, and will be able to do its job, testing how one maneuvers in space using only sunlight.

UPDATE: Rex Ridenoure from Ecliptic Enterprises emailed me to explain that the distortion is only seen in the image above, that the image at the link has been corrected for this (as noted in the caption above). If you compare the two, you will see that the Earth is round in the corrected image.

Since the sail is much closer to the lens, I remain unsure how much of what we see of its shape is real, or a function of the fisheye lens. Later thumbnails show the sail more flat and tightly stretched, suggesting that this image was taken during deployment.

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Tsunamis on Mars?

8:54 am

New research has found further evidence of past tsunamis on Mars along the transition zone between the northern lowlands (where an intermittent ocean might have once existed) and the southern highlands, caused when a bolide crashed into that ocean.

The new research simulated the height of the tsunami waves and their propagation direction, run-up elevation and distance for three potential sea levels and compared these models with the Martian deposits.

The study’s results suggest several potential impact craters, 30 to 50 kilometers (19 to 31 miles) in diameter, as the source of the tsunami events. The largest tsunami waves may have been 300 meters (984 feet) high – nearly as tall as the Eiffel Tower – following the impact, and waves up to 75 meters (246 feet) high – nearly as tall as the Statue of Liberty. The waves ultimately reached the Martian coast, potentially traveling up to 150 kilometers (93 miles) past the shoreline.

Below the fold is a video showing the simulation of one such impact and tsunami.
» Read more

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Hawaii’s governor expresses support for TMT protesters

8:27 am

In the ongoing protests that have blocked construction of the Thirty Meter Telescope (TMT) as well as shutdown all thirteen other telescopes on Mauna Kea in Hawaii, Democrat governor David Ige visited with the protesters yesterday, expressing sympathy for their positions.

Ige indicated last week that he was willing to talk to protesters. But his visit and statement Tuesday were the first public steps he’s taken toward that end. “We will be working together to determine next steps that are in the best interests of all the people of Hawaii,” Ige said in his statement.

In a nod to activist preferences, his statement referred to them as “protectors” of Mauna Kea instead of protesters.

Protest leader Kealoha Pisciotta said officials must consider not building the telescope on Mauna Kea. She said she met previously with the mayor and governor without making any progress. “We’ve done all of that. But it’s window dressing trying to get our buy-in,” Pisciotta said. “We really need people to honestly consider our positions this time.”

TMT will not be built on Mauna Kea. Bet on it. Ige always favored the protesters. Following standard Democratic Party strategy, he made believe he would enforce the law, but set things up so that the protests would have a chance to swell and block construction. He is now using this situation as a ploy to give the protesters what they want, while making believe he has no choice.

Moreover, Ige’s actions likely mean that the other thirteen telescopes are in serious danger as well. It is very likely that this power grab will allow the protesters, a small minority in Hawaii that does not have the support of the majority of the population, to force their shut down.

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Northrop Grumman to build Gateway habitation module

9:41 pm

The boondoggle never dies! NASA has decided it will give a sole source contract to Northrop Grumman to build the minimal habitation module of its Gateway lunar space station, based on that company’s Cygnus unmanned freighter.

NASA is also bypassing a traditional procurement process for the Minimal Habitation Module. Rather than requesting bids from industry, and then evaluating the responses, NASA plans to fast-track a contract with Northrop Grumman Innovation Systems, an operating unit of Northrop Grumman formerly known as Orbital ATK.

The pressurized habitation compartment will be docked with the Gateway’s Power and Propulsion Element in a stable near-rectilinear halo orbit around the moon. NASA announced in May that Maxar Technologies won a contract worth up to $375 million to build the Power and Propulsion Element, which will provide electricity and maneuvering capability for the Gateway station using high-power plasma thrusters, but does not include any pressurized section.

The Gateway is a mini-space station NASA plans to build in an orbit that swings as close as 2,000 miles from the moon about once per week. The Gateway will act as a stopover and safe haven for astronauts heading for the moon’s surface, NASA is designing the mini-station to accommodate myriad scientific experiments and engineering demonstrations required for more ambitious ventures deeper into the solar system, and eventually Mars.

The Trump administration wants to focus on a lunar landing by 2024, and so it forced NASA to reduce its Gateway boondoggle to the minimum necessary to make that lunar landing possible. This module, with the service module that Maxar is building, is that minimum Gateway.

And why do we even need this? Well, it appears that SLS and Orion and the not-yet-built or even designed lunar lander, by themselves, are not capable of getting astronauts to the Moon. A way station is somehow required.

Note also that the contract amount remains a secret, redacted from the NASA paperwork. Note also that NASA “still plans to add more elements to the Gateway, including contributions from international partners, after accomplishing the human landing on the moon.”

In other words, this is a typical Washington swamp buy-in, connived by the big space contractors and NASA to weasel this boondoggle into existence, even though the Trump administration is not interested. By keeping the cost secret at this point, they avoid some bad press and the possibility of political opposition. Their plan is to get the minimal Gateway funded and launched into space, and then demand more money to pay for the whole thing once the project exists.

This is what NASA does routinely, for all its projects. It lies about the initial cost, low balling it, so as to get the politicians to buy in. The result for the past two decades however is that NASA fails to build much of anything, while wasting gobs of taxpayer dollars on non-productive jobs here on Earth.

Do not be surprised if we see the same with Gateway. In fact, I would bet on it.

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LightSail-2 successfully deploys light sail

1:15 pm

Capitalism in space: The LightSail-2 engineering team today successfully deployed its boxing ring-sized light sail from its cubesat.

All indications are that LightSail 2’s solar sail has deployed successfully. Flight controllers sent the deployment command at approximately 11:45 PDT (18:45 UTC). Telemetry showed the motor count increasing as expected, and the motor appeared to halt at the correct time. LightSail 2’s cameras also appeared to capture imagery as planned.

The mission team will now confirm successful deployment by downloading imagery during subsuquent ground station passes today.

Once checked out, they will begin tests to see how they can use sunlight to change the light sail’s orbit, literally sailing in space.

The wonders of freedom: This mission was privately paid for and built by the Planetary Society.

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Boris Johnson to be next British PM

8:50 am

Boris Johnson has won the Tory party election to become the United Kingdom’s next prime minister.

In his victory speech, Mr Johnson promised he would “deliver Brexit, unite the country and defeat Jeremy Corbyn”.

Speaking at the Queen Elizabeth II centre in London, he said: “We are going to energise the country. We are going to get Brexit done on 31 October and take advantage of all the opportunities it will bring with a new spirit of can do. [emphasis mine]

Johnson has made it very clear that he intends to bluntly honor the will of the voters and be out of the European Union as quickly as possible. Do not expect him to spend any time negotiating a fake exit deal that tries to avoid that exit, as did his predecessor Theresa May.

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Christopher Columbus Kraft, 1924-2019

9:29 pm

R.I.P. Christopher Columbus Kraft, the flight director for all the Mercury missions and later head of the Johnson Space Center during the 1960s march to the Moon, passed away today at the age of 95.

The techniques pioneered by Kraft and young flight directors who followed in his footsteps, men like Gene “failure is not an option” Kranz, the urbane Glynn Lunney and more, saved the Apollo 13 crew from the brink of disaster in the aftermath of an explosion on the way to the moon that severely damaged the spacecraft.

Once comparing his complex work as a flight director to a conductor’s, Kraft said, ‘The conductor can’t play all the instruments, he may not even be able to play any one of them,’” Bridenstine said. “‘But, he knows when the first violin should be playing, and he knows when the trumpets should be loud or soft, and when the drummer should be drumming. He mixes all this up and out comes music. That’s what we do here.’”

Kraft was part of the post-World War II can-do generation, a far cry from today’s NASA of schedule delays, bad management, engineering errors, and gigantic budget overruns. Kraft and his generation had “intergrity,” as astronaut Frank Borman once said. They had been given a difficult job and short deadline (the end of the decade). Rather than manipulate Congress and the public to give them more time and money so their jobs would be endlessly safe, they rolled up their sleeves and made it happen as quickly and as efficiently as possible.

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Protests continue at Mauna Kea

3:08 pm

Even as the number of protesters dropped (due to the demand that alcohol-drinking and pot-smoking cease), the protests against construction of the Thirty Meter Telescope (TMT) continue, aided by emotional support given by Hawaii’s lieutenant governor during a visit to the protest site.

Last week, law enforcement officials saw some protesters — who call themselves “protectors” — drinking beer and they could also smell marijuana, Dennison said. Other protesters said they would patrol the area and ask the beer drinkers and marijuana smokers to leave, Dennison said.

Law enforcement officers no longer report beer drinking or the odor of marijuana, he said.

Hawaii Lt. Gov. Josh Green visited Mauna Kea this morning to offer his ear, advice and services as a doctor to people on the mountain blocking construction of the Thirty Meter Telescope. Green, who is from Hawaii island, also said Gov. David Ige should meet with the kupuna, or Hawaiian elders, serving as decision-makers in the group, and he apologized for some of the things said earlier that have offended demonstrators. “I am here to listen,” he told a group kupuna under a canopy during a misty morning. “And I want to say I’m sorry for some of the things that have been said in the past days and weeks.” [emphasis mine]

I have been saying for two years that Governor David Ige and his Democratic Party government in Hawaii will do nothing to stop the protests. They want to play it both ways. They mouth support for the telescope in an effort to satisfy the majority of the population (which wants it built), while doing everything they can to make sure the protests succeed in stopping construction.

This is exactly what is happening now. As long as the Democratic Party controls the government in Hawaii, TMT will never be built there.

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Agreement on bankrupt budget deal today?

1:32 pm

Update: It does appear a deal has been reached, and it appears at first glance to be as bad as I suspected.

Initial post: It appears that the White House and House Democrats are about to finalize a budget deal that will guarantee the national debt will continue to balloon for years to come, thus growing the power of Washington.

These sources tell FOX Business that the deal includes spending caps and debt ceiling increases for two years each, respectively. The deal reportedly includes spending increases for defense and non-defense spending.

A source close to the negotiations tells FOX Business that, for now, the deal would put no restrictions on reprogramming money for spending items – like a border wall.

Sources tell FOX News’ Chad Pergram that the deal would permanently end the sequester and also suspend the debt limit until July 31, 2021. [emphasis mine]

The highlighted words will also continue the decades-long shift of power from Congress to the President. Congress might allocate money to specific projects, but this deal, if agreed to as described, will now allow the President to rearrange the budget however he sees fit.

While Republicans might celebrate this change so that Trump can build his wall, in the end we will all suffer, because this arrangement ends up putting almost unlimited power in the hands of a single individual.

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Jackson Crater on the Moon’s far side

11:01 am

Jackson Crater

Central peaks of Jackson Crater

In celebration of the 50th anniversary of the Apollo 11 mission, let’s look at another cool Moon photograph. The Lunar Reconnaissance Orbiter (LRO) science team on July 19 released a new breath-taking oblique image of Jackson crater, located on the Moon’s far side. The image above, reduced significantly to post here, shows that photograph and the crater’s cluster of near-center peaks. From the caption:

East-to-west view of Jackson crater (44 miles diameter). Image was acquired when LRO was at an altitude of [69 miles] and the Sun was to the west of the crater (LROC was facing somewhat towards the Sun; phase angle 114 degrees). The central peak rises about [5900 feet] above the crater floor and the top of the crater rim in the background has more than [13,000 feet] relief relative to the floor. Image width is about [40 miles] and north is to the right

The white box indicates the area covered by the close-up to the right. From the article:

What is the composition of the crust from top to bottom? It is relatively easy to measure the surface, but what lies beneath the surface? On the Earth geologists can dig and drill deep into the crust. We do not have that luxury on the Moon, at least not yet! However, we can take advantage of natural drill holes in the crust – impact craters! When impacts occur they dig into the crust and the central peaks expose the deepest material. Jackson crater formed on what was rather uneven terrain: to the east of the crater the elevation is about +6000 meters and to the west about +3000 meters. The bottom of the crater sits at +1000 meters, and the material exposed in the central peak comes from more than 1000 meters deeper still. By studying the rocks exposed in the central peak we can get a glimpse of materials that have come up from five or more kilometers below the surface (>3 miles).

The black pile of giant boulders near the top of the close-up suggests molten material dredged up from deep below the surface. So do the many black boulders on the nearer mountain slopes.

Why this dark material does not cover the entire surface is not clear. The lighter and darker material indicates different materials and ages, but the specifics are not known, as yet.

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Apollo 11 videotapes sell for $1.82 million

8:39 am

The three original 2″ videotapes showing the astronauts on the lunar surface during Apollo 11, purchased by an engineering student as part of a lot of more than a thousand reels in 1976 for just over $200 have now sold at auction for $1.82 million.

The auction house, Sotheby’s, did not say who purchased the tapes. Hopefully whoever has intends to release the visuals, since it appears the quality is better than what we presently have.

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India successfully launches Chandrayaan-2

8:24 am

The new colonial movement: India yesterday successfully launched its lunar orbiter/lander/rover Chandrayaan-2 into orbit.

India’s Geosynchronous Satellite Launch Vehicle GSLV MkIII-M1, successfully launched the 3840 kg Chandrayaan-2 spacecraft into an earth orbit today (July 22, 2019). The spacecraft is now revolving round the earth with a perigee (nearest point to Earth) of 169.7 km and an apogee (farthest point to Earth) of 45,475 km. Today’s flight marks the first operational flight of the GSLV Mk III.

They will slowly raise the spacecraft’s apogee over the next two months to bring it into the Moon’s gravitational sphere of influence, when they will begin lowering the orbit leading to a separation of the lander/rover for a September 7 landing near the Moon’s south pole.

This was the third launch of the upgraded GSLV Mark III. With this launch India now has an operational rocket it can use to launch its astronauts into space in 2022.

The leaders in the 2019 launch race:

9 China
9 Russia
8 SpaceX
5 Europe (Arianespace)
4 India

The U.S. continues to lead in the national rankings, 14 to 9.

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LightSail-2 to deploy sail July 23

6:06 pm

The LightSail-2 engineering team has decided to attempt deployment of the light sail on July 23.

The spacecraft is a cubesat about the size of a loaf of bread. Once deployed, the light sail will be about the size of a boxing ring. If deployment is successful, they will then attempt to use the sail and sunlight to change the sail’s orbit, thus learning the techniques for using light to travel through space.

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Europe’s Galileo GPS-type constellation back up and running

7:35 pm

Europe’s Galileo GPS-type constellation was back up and running on July 18, though it remains unclear exactly what caused the failure in both of its ground facilities.

Officials have only provided this tantalizing hint:

“The technical incident originated by an equipment malfunction in the Galileo control centers that calculate time and orbit predictions, and which are used to compute the navigation message,” the GSA wrote on Thursday in its most specific statement yet. “The malfunction affected different elements on both centers.”

That generally confirms what researchers who use the Galileo system had noticed independently. Satellites transmit packages of data to Earth that convey a set of astronomical positioning and timing data, used to compute satellite orbits and positions. But some combination of errors in the Galileo processing system led it to base these calculations on the wrong date, for example, using July 11 time stamps—the day the outage began—throughout the week. Eventually, the system even interpreted this data as referring to July 18, instead of the previous Thursday. The frozen time stamp seemed to be a symptom of problems with the ground-based processing system, rather than the satellites themselves.

This sure sounds like a computer hack that took down the systems at both facilities, suggesting that the security of Europe’s Galileo system has some very big holes.

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Soyuz launches new crew to ISS

7:08 pm

The Russians today launched and docked a new crew to ISS using their Soyuz rocket and capsule.

This launch puts Russia ahead of SpaceX in the 2019 launch race, the first time Russia has been ahead of SpaceX in almost two years. It also puts Russia in a tie with China for the lead, also something that has not been the case in two years. The leaders:

9 China
9 Russia
8 SpaceX
5 Europe (Arianespace)

The U.S. still leads 14-9 over China and Russia in the national rankings.

Posted from the south rim of the Grand Canyon after our hike out today.

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The Untouched Moon

6:01 pm

Montes Carpatus
Click for full image.

In celebration of Apollo 11: Continuing the theme of yesterday’s cool image, where I noted how little of the Moon we have really seen, today’s cool image gives us a breath-taking glimpse of one such untouched region, the Montes Carpatus region.

The photograph to the right, reduced to post here, was released by the Lunar Reconnaissance Orbiter (LRO) science team in March 2018. From the release:

Volcanic rocks are our best window to the deep interior of the Moon, and the Montes Carpatus has no shortage of volcanic landforms: lava flows, pyroclatic deposits, rilles, and more! Lavas are formed as the mantle begins to melt, so by sampling volcanic rocks of various ages from regions across the Moon scientists can reconstruct the range of compositions and processes over time. The Montes Carpatus formed as a result of the giant impact that formed the mighty Imbrium basin, the mountains are actually the raised rim of the basin.

Today is the 50th anniversary of the Apollo 11 landing. If you had told anyone involved in that mission that fifty years later no significant further manned exploration of the Moon had yet occurred, they would have scoffed.

It is a terrible condemnation of my generation, the generation that followed Apollo 11, that we did nothing grand like this. I challenge the generations today to reach higher, and do better.

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The Taurus-Littrow valley

6:01 pm

Taurus-Littrow Valley
Click for full image.

It might not be Apollo 11, but during this 50th anniversary week of that mission, why not look at where the last Apollo 17 crew landed, in the middle of the Taurus-Littrow valley, as shown on the right in a Lunar Reconnaissance Orbiter (LR) image released by the LRO science team in 2018.

The image illustrates how ambitious NASA had become by this last Apollo mission. The Apollo 11 site was chosen because it was flat with as few risks as possible. By Apollo 17, the Apollo engineers and astronauts were quite willing to drop the LM down into this valley between gigantic mountains. Granted, the valley was more than 400 miles wide, but considering the risks of every Apollo flight, the choice was daring to say the least.

Taurus-Littrow also has a cluster of craters believed to have been formed by material flung out from the formation of 86-kilometer-wide Tycho crater about 100 million years ago. Tycho is 2250 kilometers from Taurus-Littrow, but the impact that formed it was violent enough that it cast material far across the Moon.

Nor is this location the most spectacular on the Moon. In fact, considering that all the manned and unmanned missions in total have probably covered less ground than a New York cab driver does in a single day, we have seen almost nothing there.

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ULA delays Delta 4 and Atlas 5 launches for same reason

7:30 pm

Because of a concern about the same component used on both its Atlas 5 and Delta 4 rockets, ULA has now delayed the upcoming launches of both rockets.

Concerns over an unspecified part flying on the upper stages of United Launch Alliance’s rockets have delayed the launch of a GPS satellite on a Delta 4 booster from July 25 to no earlier than Aug. 22.

The same issue has also delayed an Atlas 5 launch.

The delays are related to engineers’ concerns over a common component that flies on the upper stages of the Atlas 5 and Delta 4 rockets, a ULA spokesperson said Wednesday.

Both rockets use the same Aeroject Rocketdyne engine in their upper stages, but an official from that companY said that its engine is not the issue. The upper stages also use the same avionics systems.

Posted from the rim of the Grand Canyon.

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A wave on the Moon

3:01 pm

A lunar ejector blanket

Continuing this week’s celebration of the 50th anniversary of the Apollo 11 mission means we get to look at another cool image from the Moon. The photograph on the right, reduced to post here, was released by the Lunar Reconnaissance Orbiter (LRO) science team in 2016.

What are we looking at? At first glance it looks like a black & white photograph of The Wave in northern Arizona. What it is instead is the pattern of ejecta laid down across the surrounding terrain immediately after the impact that created relatively fresh Chaplygin Crater. From the website:

The delicate patterns of flow across, over, and down local topography clearly show that ejecta traveled as a ground hugging flow for great distances, rather than simply being tossed out on a ballistic trajectory. Very near the rim lies a dark, lacy, discontinuous crust of now frozen impact melt. Clearly this dark material is on top of the bright material so it was the very last material ejected from the crater.

Below the fold is a wider shot of the entire crater and its surrounding terrain, with the rectangle indicating the region covered by the close-up above The dark crust near the rim mentioned in the quote can clearly be seen.
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Off to Grand Canyon again

11:05 am

Diane heading down in 2016

Diane and I are now on our way north to do an overnight hike to Phantom Ranch at the bottom of the Grand Canyon, hiking down tomorrow. We were unable to go together to the Canyon last year for a number of reasons, so this trip will be an especially nice treat. And since we live in Arizona, we have the advantage of being able to simply jump in the car and go. It would be a mistake not to do it.

The photo to the right was taken by me during our 2016 trip. Diane, the tiny blue speak near the bottom of the image, is hiking ahead of me on the South Kaibad trail, the traditional route down for those doing an overnight down and up trip. We shall do the same this weekend.

I will likely do some posting today, while I remain above the rim. I have also scheduled a bunch of posts for the next few days, so the website will not go dark.

Posted heading north from Tucson.

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