Behind The Black – Robert Zimmerman

Dates set for first landings on Ryugu

August 31, 2018 9:10 am Robert Zimmerman

The science team for the Japanese probe Hayabusa-2 have set the dates for the first two landings on the asteroid Ryugu.

On 21 September, it will despatch the first of these piggybacked packages. A 3.3kg container known as Minerva II-1, which is mounted on the spacecraft, will deploy two robots known as Rover 1A and Rover 1B.

The 1kg “rovers” will actually move by hopping under the asteroid’s low gravity. Each one contains a motor-powered internal mass that rotates to generate force, propelling the robot across the surface. The rovers are equipped with wide-angle and stereo cameras to send back pictures from Ryugu.

Then, on 3 October, the mothership will deploy a lander called Mascot, which has been developed by the German Aerospace Center (DLR) in conjunction with the French Space Agency (CNES). Mascot, otherwise known as the Mobile Asteroid Surface Scout, is a 10kg instrument package that will gather a range of scientific data from the surface. It carries a wide-angle camera, a microscope to study the composition of minerals, a radiometer to measure temperature and a magnetometer to measure the magnetic field.

After it reaches the surface, Mascot can move its position only once, by jumping.

An earlier report had said that Hayabusa-2 would itself land late in October, but this report today leaves that landing date unstated.

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Update on the leak on ISS, its cause and repair

August 31, 2018 9:02 am Robert Zimmerman

Link here. The article provides a lot of good details, including the contingency plans should the Soyuz itself be unsafe for astronauts to use to return to Earth. As for the repairs:

Shortly after finding the hole, the crew took photos for ground crews to review. At the same time, the Russian crewmembers used Kapton tape to temporarily seal the breach/leak – a band-aid until a more permanent solution was found and a temporary fix that at first only slowed the leak rate.

After the tape was applied, reports varied regarding ISS pressure – with some reports from the crew noting a stabilization of pressure inside the international complex and others continuing to show a slower leak.

Within hours, the Russians had devised a permanent fix using sealant, tape, and medical patches.

There was some initial disagreement among the crew (as well as between NASA and Roscosmos) in terms of implementing the permanent fix so quickly, with ISS Commander Drew Feustel (NASA) wanting to hold off on the permanent fix until the ground could review the idea while Roscosmos wanted to proceed with the sealant/patch/tape fix immediately.

Ultimately, Roscosmos and the Russian crew proceeded with the fix.

The sealant – as of writing – appears to have worked and stopped the leak completely. However, application of the final aspects of the repair (the application of patches and tape) have been left until tomorrow to allow the sealant of fully set and harden during the crew’s “overnight” sleep period.

The disagreement about when to do the final repair probably revolves around a desire of NASA to pinpoint the exact cause of the holes, including the possibility that it was caused by a fundamental problem with the manufacture of the Soyuz itself. The Russians in turn don’t like air leaks (having lost three astronauts from one at the end of the Salyut 1 space station mission in 1971), and would also not like outsiders to be uncovering a problem with the Soyuz capsule, unlikely here as that is.

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Fat Cat Staying Alive 10 Hours

August 30, 2018 6:01 pm Robert Zimmerman

An evening pause: This pause is a bit more than a pause, since it is ten hours long. I don’t expect anyone to watch it all, as the first three minutes makes the point, quite hilariously, and well worth a few minutes of entertainment. As the filmmaker notes, “Fat cats are always funny…”

Hat tip Jim Mallamace.

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Pollster: Elitists still refusing to listen

August 30, 2018 1:35 pm Robert Zimmerman

Link here. Key quote:

Elites simply don’t understand these voters and find their voting behavior unfathomable because they rarely really interact with them, socialize with them, and, most important, listen to them. And people know it. To quote one voter’s attitude toward elites: “They think that because they’re [so] smart, that their opinion matters more than yours, because you’re not as smart as them.”

Frankly, Washington ought to remember that there is an America west of the Hudson and east of the San Andreas Fault, and for people there, dealing with getting by paycheck to paycheck is a bigger priority than the political spat of the week or the latest media preoccupation.

People’s views of elites isn’t a passing fad. It is an existential threat to government, political parties, the media and even business and academia, because people are fundamentally questioning the motivations and usefulness of so-called experts.

He calls the experts “elites”, but that implies a superior status that the power structure in Washington and modern academic circles no longer deserve. I prefer “elitists,” which instead describes someone who thinks they are superior but are really quite inferior to everyone else. This conclusion is based on forty years of interacting with them. See for example my conclusions after visiting a Washington think-tank conference in 2016:

Nor has Trump’s success as a candidate made them wonder or question their assumptions. Instead, his name was generally mentioned with derision or contempt (most often by Republican Senator Graham), followed by scattered laughter from the audience.

While I might actually agree with many of Graham’s conclusions about Trump, unlike Graham I also recognize that Trump is no fool, that he has proposed some worthwhile policy proposals, and that the reason he won the Republican nomination is because the public is very unhappy with many of the policy decisions being made by the very people at this conference. The public is aware of the wider issues, and wants their government to consider them.

Rather than ask why Trump has been successful, however, this crowd was ready to dismiss him, and the people who voted for him. To give another example, consider the first panel, “The Case for Inclusivity”, where four national security leaders expounded the importance of guaranteeing gender equality in the workforce, even on the battlefield. At one point one of the panelists noted that some of the gender policies that Hillary Clinton created in the State Department during her tenure as Secretary of State are now permanent and will never go away, no matter who gets elected in the future. Neither the rest of the panel nor the audience saw anything worrisome about this statement. In fact, it appeared to me that they clearly supported it.

So much for democracy and following the wishes of the electorate.

The elitists in power today are close-minded, refuse to consider other points of view, and routinely dismiss anyone who dissents from their generally liberal mindset. And their contempt for ordinary people not of their ilk is often awe-inspiring, especially because they have so little self-awareness of it.

The worst part is that they have shown absolutely no effort to reexamine their assumptions, even now almost two years after Trump was elected. If anything, the leftist elitists in politics and academia have doubled down, becoming even more hostile and close-minded to other perspectives.

If something doesn’t change soon, some very bad things are going to happen.

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Trump cancels federal employee pay raise

August 30, 2018 12:55 pm Robert Zimmerman

President Trump today used his power under federal law to cancel this year’s scheduled federal employee pay raise of 2.1% as well as a 25% increase for “localities”.

In a letter to House and Senate leaders, Trump wrote that he’d decided “across-the-board” pay raises as well as locality pay raises for civilian federal workers in 2019 would be frozen. “I have determined that for 2019, both across‑the‑board pay increases and locality pay increases will be set at zero,” he wrote. “These alternative pay plan decisions will not materially affect our ability to attract and retain a well‑qualified Federal workforce,” Trump added.

In the letter, Trump said a 25.7-percent pay raise for localities, as well as a 2.1-percent pay increase for across-the-board pay, both scheduled for January 2019, would add billions to the federal deficit. Specifically, he pointed to the scheduled locality pay raise as costing $25 billion. “We must maintain efforts to put our Nation on a fiscally sustainable course, and Federal agency budgets cannot sustain such increases,” Trump wrote in the letter.

This is what has made Trump different than every president since Reagan. He is willing to do things that shake up the status quo that are also falsely considered risky by the Washington political class. This will not hurt him politically in the least, despite what you will hear the pundits on the bankrupt mainstream media say. If anything, it will strongly help him and his political allies, as the American taxpaying public has been for many years disgusted with the overpaid federal workforce that has an amazing ability to regularly screw up any job they are given.

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First private patents filed for manufacturing materials on ISS

August 30, 2018 10:36 am Robert Zimmerman

Capitalism in space: Two private companies, Proctor & Gamble and Made in Space, have filed the first private patents for the manufacture of either materials or supplies on the International Space Station.

These patents are very important, as they specifically describe doing manufacturing in space of objects that can be used in space. There have been many previous patents for research in space, but all have usually related to research for use on Earth.

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Air leak on ISS

August 30, 2018 10:17 am Robert Zimmerman

An air leak on ISS was detected yesterday, and pinpointed to cracks found in the spherical habitation module of one of the Soyuz capsule’s docked to the station.

According to Russian sources, the problem was found in the Habitation Module of the Soyuz MS-09 spacecraft, where the crew detected two small cracks, reaching 1.5 millimeters in size. Alexander Gerst apparently first discovered the leak.

The cosmonauts photographed the affected area and sent it to mission control for analysis. The first estimates indicated that the holes could be caused by meteor or debris strikes which punctured the hull of the spacecraft. Head of the Roskosmos State Corporation Dmitry Rogozin confirmed the incident but said that the problem had been resolved. According to Rogozin, the crew had to close off various sections of the station to isolate the leak.

According to ESA sources, the area of the leak was temporarily sealed with tape, while Russian cosmonauts were working on a permanent sealing patch. After some drop during the night, the air pressure inside the ISS was reported as stable near sea level. In the meantime, mission control informed the crew that all scheduled activities for August 30 had been cancelled.

The cracks do not pose a problem for using the Soyuz for returning to Earth, as the habitation module is discarded before de-orbit. The descent module appears unharmed.

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The aurora of Saturn

August 30, 2018 10:11 am Robert Zimmerman

Cool movie time! Using the Hubble space telescope scientists have compiled an animation showing the changes in Saturn’s north pole aurora over time.

In 2017, over a period of seven months, the NASA/ESA Hubble Space Telescope took images of auroras above Saturn’s north pole region using the Space Telescope Imaging Spectrograph. The observations were taken before and after the Saturnian northern summer solstice. These conditions provided the best achievable viewing of the northern auroral region for Hubble.

…The images show a rich variety of emissions with highly variable localized features. The variability of the auroras is influenced by both the solar wind and the rapid rotation of Saturn, which lasts only about 11 hours. On top of this, the northern aurora displays two distinct peaks in brightness — at dawn and just before midnight. The latter peak, unreported before, seems specific to the interaction of the solar wind with the magnetosphere at Saturn’s solstice.

The animation of all the images is embedded below. At the link is a second video showing the aurora in close-up

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Lunar scientist Paul Spudis had passed away

August 30, 2018 10:03 am Robert Zimmerman

R.I.P.: Paul Spudis, lunar scientist and strong advocate for the human exploration of space, passed away yesterday at the age of 66.

Spudis was one of the best lunar scientists we have had. He also saw past petty budget battles and his personal planetary research to recognize the need for human exploration and settlement on the Moon and elsewhere. This is a premature loss for us all.

Leonard David at Space News has written a fine obituary, which gives only a hint at how important Spudis was to the recent resurgence of the U.S. in the exploration of space.

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August 28, 2018 Zimmerman/Batchelor podcast

August 29, 2018 7:29 pm Robert Zimmerman

Embedded below the fold in two parts.
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10cc – I’m not in love

August 29, 2018 6:01 pm Robert Zimmerman

An evening pause: Recorded live in concert in 2011.

Hat tip Edward Thelen.

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Looking for Marsquakes

August 29, 2018 1:24 pm Robert Zimmerman

After eight and a half years of study of one particular very young fault system on Mars using high resolution images from Mars Reconnaissance Orbiter, scientists have found no evidence that any quakes occurred there in that time.

The team studied images of Mars’s surface over nearly a decade to look for changes that might have been caused by marsquakes. The researchers used images of Mars’s surface from the High Resolution Imaging Science Experiment (HiRISE) and applied Co-registration of Optically Sensed Images and Correlation (COSI-Corr)—software that has been validated to track terrestrial glaciers, landslides, and quakes on Earth, as well as dune movement on Mars itself—to hunt for signs of displacement near fault zones.

The researchers focused on the Cerberus Fossae fault system, the youngest fault system on the Red Planet and thus the most likely to still be active. They used the average coregistration performance of each study image to determine that this method should be able to detect fault slip rates of 0.1–10 millimeters a year.

The team identified only one displacement signal that could have been interpreted as evidence of a marsquake—but dismissed it as the result of a topographic artifact. Their results suggest that no seismic movement occurred in the Cerberus Fossae area over the course of the study, which spanned 8.5 Earth years’ worth of images from the planet.

This suggests, but does not prove, that Mars has very few quakes. We shall know more when InSight lands on Mars on November 26.

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Ukraine test flies winged cruise missile

August 29, 2018 9:53 am Robert Zimmerman

Ukraine announced today that it has successfully test flown Neptun, a new cruise missile with wings.

[Neptun] is a subsonic weapon developed to hit maritime targets, but can also be deployed against land targets, said Ukrainian defense expert Serhiy Sguretz. “The trajectory is standard for a cruise missile, the cruising flight altitude is 10 to 30 meters (33 to 100 feet), and in the final approach phase, it descends to four to five meters. The missile is equipped with a high-explosive fragmentation warhead. Guidance system details have not been published, but it is capable of hitting different targets, including enemy radar stations. When attacking maritime targets, Neptun has a range of approximately 280 km, increasing to 300 km when launched against land targets. “With a little help, it could fly up to Moscow,” added Sguretz.

The cruise missile is scheduled to be built in three different versions—sea-launched, land-launched, and air-launched—targeting sea and land objects. A picture published by the RNBO shows that the Neptun’s mobile transporter-erector-launcher (TEL) has some similarity to that of the S-300 Soviet/Russian air defense system.

Neptun could be integrated onto not only the Ukrainian air force’s Soviet/Russian aircraft but on some NATO aircraft.

Obviously, this is designed to give Russia pause about any further aggression against the Ukraine.

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India’s manned flight schedule revealed

August 29, 2018 9:43 am Robert Zimmerman

The new colonial movement: K. Sivan, the head of India’s space agency ISRO, announced yesterday the planned flight program that will lead up to that nation’s first manned spaceflight in 2022.

The Indian Space Research Organisation will conduct two flights of unmanned space capsules about 30 months and 36 months from now in preparation for the country’s first manned space mission by 2022, space agency officials announced on Tuesday.

The manned space capsule will be designed for a five-to-seven day mission about 300km to 400km above the Earth, officials said, adding that Isro has for over a decade been developing key technologies for human space flight.

Isro has designed a three-person space capsule but how many astronauts will be sent in the first mission has not been decided yet, they said. Only Russia, the US and China have until now sent astronauts into space aboard their own spacecraft.

This entire program hinges on the repeated successful use of India’s most powerful rocket, the GSLV Mark 3, which has only flown once so far. Two more launches are scheduled through January, including one that will take India’s first lunar lander to the Moon.

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Virgin Orbit performs more flight tests of 747

August 29, 2018 9:37 am Robert Zimmerman

Capitalism in space: Virgin Orbit has completed a series of flight tests of the 747 airplane that will be used to launch its LauncherOne smallsat rocket.

The flights of the company’s Boeing 747 aircraft, nicknamed “Cosmic Girl,” were the first since the company installed a pylon on the plane’s left wing that will be used to carry the LauncherOne rocket on future flights of the air-launch system.

The company disclosed few details about the test flights, but flight tracking services such as Flightradar24 list three flights of the aircraft in recent days, most recently Aug. 27, taking off from the Southern California Logistics Airport in Victorville, California. The flights ranged in duration from one and a half to three and a half hours in airspace over the Mojave Desert and over the Pacific Ocean off the California coast.

The company appears to be making progress, though its also appears that their promised first rocket flights are not happening this summer, as previously announced.

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Launch schedule shuffles for SpaceX

August 29, 2018 9:29 am Robert Zimmerman

Link here. A combination of payload issues, scheduling conflicts, and rocket refurbishment demands has forced SpaceX to shuffle and delay many of its remaining launches scheduled for the rest of 2018.

The biggest conflict appears to be between the first manned Dragon test flight, and the second Falcon Heavy flight, both of which are now listed for a November launch. Since both will use the same launchpad, there must be some space between them.

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Russian medics have approved UAE’s astronaut candidates

August 29, 2018 9:19 am Robert Zimmerman

The new colonial movement: Russian medics have now narrowed the candidates for the United Arab Emirates’ (UAE) first spaceflight.

Nine candidates were sent to Russia for testing. The article does not say how many candidates were given medical clearance. Further training in September will narrow the choices further, followed by a final decision by the UAE naming the one person who will fly to ISS.

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Dragon/Starliner schedules firming up

August 29, 2018 9:11 am Robert Zimmerman

At a meeting at NASA this week a status update of SpaceX’s manned Dragon and Boeing’s manned Starliner capsules indicated that their proposed flight schedules, with the first manned flights occurring next year, are increasingly firm.

Overall, the updates were quite positive with most of the flight hardware nearing completion. The two companies must each execute two test flights to the International Space Station (ISS) in order to be certified to perform operational crew rotation missions.

On the SpaceX side, the company will first execute an uncrewed test flight of the Crew Dragon spacecraft called Demonstration Mission 1 (DM-1) – currently scheduled for this coming November. It will then be followed by a crewed test flight designated Demonstration Mission 2 (DM-2). In between the two missions, SpaceX will also execute an in-flight abort test.

In terms of Boeing, they will perform an uncrewed Orbital Flight Test (OFT) with the CST-100 Starliner followed by a Crewed Flight Test (CFT). A pad abort test will be also conducted between the two missions.

While Boeing’s schedule for these flights is somewhat uncertain as they investigate the recent failure of several valves to close during an engine test, SpaceX’s schedule has become very solid. Assuming nothing goes wrong on the unmanned test flight in November and the in-flight abort test, they will fly humans in April, 2019.

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Scientist proposes aerobraking asteroids into Earth orbit

August 29, 2018 9:00 am Robert Zimmerman

What could possibly go wrong? A scientist has proposed the use of the Earth’s atmosphere to aerobrake resource-rich asteroids into Earth orbit to make them easily available for mining.

In the new paper, Tan and colleagues propose using aerobraking to slow small asteroids enough that they don’t just shoot straight past Earth, but stay in orbit, where they could be mined for platinum or water. Those resources could then be taken to space stations to supply future missions or operations. Water, they write, could even be split into hydrogen and oxygen for fuel. All it would take is a precisely calculated push from an unmanned spacecraft, they report this month in Acta Astronautica.

And if the maneuver were done far enough from Earth—millions of kilometers, in most cases—it likely wouldn’t take much effort. That’s because a small push from far away would greatly change the angle of an incoming space rock’s path. Tan notes that each case would be different, depending on the trajectory of the target asteroid, and says that modifications might be necessary if the asteroid gets off track.

They propose doing this only with small asteroids, less than 100 feet in diameter.

I am sure my readers can outline the numerous problems with this proposal. From my perspective, the primary one is that it is almost impossible to predict the precise path of these kinds of asteroids. Their rotation and irregular shape combined with radiation pressure from the Sun tends to make their solar orbits somewhat chaotic and difficult to predict at the accuracy needed to safely nudge them into a close fly-by of the Earth.

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New Horizons snaps first picture of Ultima

August 29, 2018 8:48 am Robert Zimmerman

It isn’t much more than a tiny moving dot across a sea of stars, but on August 16, 2018 New Horizons was able to capture its first series of images of its January 1st fly-by target, the Kuiper belt object they have nicknamed Ultima Thule.

This first detection is important because the observations New Horizons makes of Ultima over the next four months will help the mission team refine the spacecraft’s course toward a closest approach to Ultima, at 12:33 a.m. EST on Jan. 1, 2019. That Ultima was where mission scientists expected it to be – in precisely the spot they predicted, using data gathered by the Hubble Space Telescope – indicates the team already has a good idea of Ultima’s orbit.

Ultima was 100 million miles away at the time.

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The shift to smallsats by the U.S. military

August 28, 2018 10:05 pm Robert Zimmerman

Link here. The story focuses on the first planned constellation of smallsats, hopefully set for launch by 2021.

[DARPA] has mounted a program called Blackjack, which aims to loft a network of 20 prototype spy satellites to low Earth orbit (LEO) in 2021. These craft will be incredibly cheap compared to the current crop: The goal is get each satellite built and launched for about $6 million, said Thomas, the Blackjack program manager.

Blackjack aims to meet this ambitious cost target by leveraging developments in the private space sector. Several companies plan to establish huge constellations in LEO in the next few years, to deliver cost-effective internet service to people around the globe. SpaceX’s Starlink network, for example, will feature thousands of individual satellites.

Blackjack will integrate reconnaissance and communications payloads into standard commercial satellite bodies (known as buses) and take advantage of the high launch rate required to loft the mega-constellations, Thomas said. “The Blackjack approach assumes that we’re not going to be an anchor tenant. We’re not going to be driving these companies,” he said during the FISO presentation. “But we want to take advantage of that production line of spacecraft, the buses especially, that they’re going to be building. We want to take advantage of that launch and take advantage of all of those pieces.”

There’s a lot more at the link. If this first constellation works out, they will upgrade it to a constellation of 90 satellites. And it will based on buying the bulk of its product from the private sector instead of having the military build it. This will provide a wealth of business for smallsat manufacturers as well as smallsat rocket companies.

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Jerry Goldsmith – Rambo First Blood: “It’s a Long Road”

August 28, 2018 6:01 pm Robert Zimmerman

An evening pause: Performed live in Budapest, 1999.

Hat tip Danae.

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3D gun files still available to public despite judge’s ruling

August 28, 2018 4:36 pm Robert Zimmerman

Pushback: Despite a judge’s apparently unconstitutional ruling that banned the free give-away of the plans for printing 3D guns, the company that is producing them has instead made them available for purchase, at any price the buyer designates.

The ruling was intensely shaky and a jab to both the First and Second Amendment, so naturally Democrats were aroused.

But their celebration was premature.

Defense Distributed founder Cody Wilson crushed their short-lived happiness during a Tuesday press conference where he revealed that he actually won’t be stopped from sharing technical data; he will simply sell the files via his website, defcad.com. (Yes, he can do this.) “This judge’s order, stopping us from simply giving things away, was only an authorization that we could sell it, that we could mail it, that we could email it, that we could provide it by secure transfer. I will be doing all of those things, now,” announced Wilson.

“A lot of this to me was about principle,” he continued. “For many years, I just chose not to sell these files, because I’m an open-source activist. I believed in demonstrating that there was a right to commit this information to the public domain.”

“But, this is my opportunity to correct the media all in one place. To read headline after headline about how you can no longer 3D-print a gun, you can no longer have these files, this is not true. This has never been true. I now have to demonstrate this to you, forcefully, to deliver the point.”

There is no set price for the material; patrons are asked to give whatever they’d like in exchange. Wilson said the money would be used for further legal fees.

The judge’s ruling was completely bogus, especially since the Trump Justice Department had already settled the suit that the Obama Justice Department had brought. Moreover, since when can a judge ban the publication of any information the U.S.? His ruling appears to violate the First Amendment, and possibly the Second Amendment as well.

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The search for Mars Polar Lander

August 28, 2018 12:08 pm Robert Zimmerman

In December 1999 the U.S. lander Mars Polar Lander was to set down near the southern polar cap of Mars. After an almost routine eleven month journey to Mars, all efforts to contact the spacecraft after its landing failed. A NASA review eventually concluded that the spacecraft had prematurely shut down its landing engines while the spacecraft was still far above the surface, and had therefore crashed to the ground.

Since then there have been extensive efforts to locate the lander’s remains on the surface, all to no avail. Though Mars Global Surveyor, in orbit at the time, tried to find it, its resolution was not sufficient. In recent years Mars Reconnaissance Orbiter (MRO) has taken several dozen high resolution images of the estimated landing area, two of the most recent were included in the August 2018 image release. The image on the right is a cropped section of one of those images, illustrating the difficulty of the search. (If you click on the image you can explore the full version.) The other image is quite similar.

As the southern polar cap shrinks and grows seasonally, it produces endless numbers of black spots from the release of underground dust as the carbon dioxide dry ice sublimates into gas. Moreover, the growth and retreat of the dry ice cap changes the landscape, periodically covering any remains of the rover as well as quickly removing many of the ground disturbances that the crash might have caused. In the almost two decades since the lander’s crash landing, about ten Martian years have passed, meaning that cap has melted and frozen ten times over this region in that time.

Images taken by MRO of Mars Polar Lander landing area

The image on the right shows the footprint of all the images that MRO has so far taken of the Mars Polar Lander landing area. If you are ambitious and want to get your name in the news, all you have to do is spend some time combing through those images and find the lander there. Every one of these images is available for public download at full resolution. Go to HiRise image archive, hover your mouse over latitude 77 degrees south, longitude 166 degrees east, and click several times to zoom in. You then change the selector icon at the top from “+” to “the arrow”. When next you click on any portion of that footprint it will show you a bunch of the images taken, all of which you can now download and inspect.

If you are successful and find the lander, please let me know. It would be nice to make that announcement here on Behind the Black.

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Arecibo gets upgrade, new funding

August 28, 2018 9:33 am Robert Zimmerman

Back from the dead: Threatened with closure only last year due to lack of funds, then damaged badly from Hurricane Maria, the Arecibo radio telescope in Puerto Rico has not only obtained a new operational funding from a new partner but also a $6 million upgrade.

The money will help design and build a super-sensitive set of antennas to be installed at the focal point of Arecibo’s dish. The 166 antennas, together part of the phased-array feed to be installed in 2022, are expected to significantly increase Arecibo’s capabilities. The phased-array feed will boost the telescope’s sky survey speed, making it five to six times faster than it is now, and it’ll enable the telescope to look at a larger piece of sky at one time.

…This month’s announced upgrade comes after years of uncertainty about Arecibo’s operations. In September 2017 Hurricane Maria caused about $14 million in damage to the telescope and ancillary buildings, some of which is still being repaired today. The facility lost its 430-megahertz line feed, which was used for atmospheric studies. Pieces of the antenna fell and punctured panels in the primary reflector of the main dish, forcing the replacement of 80–90 of the panels. There was also significant flooding under the primary reflector, which damaged some of the lines and heating facilities. In addition, several pieces of electronic equipment, some imagers, and laser rangers were damaged. Three buildings — a maintenance facility, a heater/transmitter building and a family unit — were also partially or completely destroyed due to rock and tree debris.

The hurricane was only the latest challenge for the observatory, after Arecibo had fought off repeated threats of closure over the previous decade due to NSF funding concerns. The latest situation was resolved last February, when a consortium led by the University of Central Florida took over operation and management of the observatory, significantly lessening the burden on NSF.

While Arecibo is no longer the world’s largest single radio dish, having been topped by China’s FAST radio telescope, it appears at least for now better positioned to do research. China does not yet have the radio astronomers experienced enough to operate its telescope, and so FAST at present is significantly under-utilized.

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Hayabusa-1 sample pins down age of asteroid

August 28, 2018 9:19 am Robert Zimmerman

Using particles gathered by Hayabusa-1 Japanese scientists have determined the age of the asteroid Itokawa.

Japanese scientists, including those from Osaka University, closely examined particles collected from the asteroid Itokawa by the spacecraft Hayabusa, finding that the parent body of Itokawa was formed about 4.6 billion years ago when the solar system was born and that it was destroyed by a collision with another asteroid about 1.5 billion years ago.

These results are only the beginning. As more samples return from more asteroids, scientists will start to add details to the overall history of the formation and evolution of the solar system, adding significant depth to the rough outline they presently have. And these new samples are already on the way, with both Hayabusa-2 and OSIRIS-REx approaching their target asteroids.

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Pachelbel’s Chicken

August 27, 2018 6:01 pm Robert Zimmerman

An evening pause: Words fail me.

Hat tip Edward Thelen.

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Inexplicable high latitude Martian terrain

August 27, 2018 2:58 pm Robert Zimmerman

Strange image time! The image on the right, reduced in resolution to post here, comes from the August 1, 2018 image release from the high resolution camera on Mars Reconnaissance Orbiter (MRO). (If you click on the image you can see the full resolution version.) I have not cropped this image at all, so that you can see all of its swirling terrain.

This image did not come with a caption. The image site merely describes this terrain as having an “interesting morphology.” The location, in the very high southern latitudes (78 degrees south) just outside the southern rim of a very large crater, provides a slight explanation, as the growth and retreat of the Martian carbon dioxide polar caps is known to create very strange landforms. These swirling flows are obviously an example of one such landform.

The crater rim is just off of the top of the image and parallel with it. Therefore, the apparent erosional flows going around the hills and mesas are running parallel to the rim, not down from it. The black specks scattered about are probably points where dust was released as the carbon dioxide turned from ice to gas, a process that at the high latitudes on Mars often causes what planetary scientists call “spiders.”

I will not even try to make a guess at the process that formed what we see here. The image itself was taken on June 16, 2018 as part of a seasonal monitoring effort, which means scientists expect there to be changes occurring here from year to year as the polar cap shrinks and grown. An almost identical image had been taken two years ago, on December 18, 2016, and shows almost no black specks, probably because of the different time in the Martian year. A much closer comparison of both high resolution images would be necessary to tease out any more subtle changes.

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EXOS completes successful test flight of reusable suborbital rocket

August 26, 2018 9:30 am Robert Zimmerman

Capitalism in space: EXOS Aerospace yesterday completed a successful test flight of its reusable suborbital rocket, SARGE, at Spaceport America in New Mexico.

The company’s first Suborbital Autonomous Rocket with GuidancE, or SARGE, rocket lifted off from Spaceport America in New Mexico at approximately 2:15 p.m. Eastern. After reaching an unspecified peak altitude, the rocket descended under parachute, landing about 15 minutes later a short distance from the pad. The rocket’s nose cone, descending under a ballute, landed several minutes earlier.

The company didn’t immediately disclose technical details about the flight, such as the peak altitude, but in a live webcast of the launch appeared to be satisfied with the vehicle’s performance, despite the vehicle appearing to veer from its vertical trajectory briefly after liftoff.

“This was a very successful test for us,” said John Quinn, chief operating officer of Exos, on the webcast. “We’re very excited that we had all of our recovery systems operational.”

It sounds as if they were mostly testing the recovery systems that will allow the rocket and payload to land safely in a condition to fly again.