Year: 2018

Dawn finds recent changes on Ceres

4:28 pm

New data from Dawn has found at least one spot on Ceres where recent changes appear to have occurred on the surface.

Observations obtained by the visible and infrared mapping spectrometer (VIR) on the Dawn spacecraft previously found water ice in a dozen sites on Ceres. The new study revealed the abundance of ice on the northern wall of Juling Crater, a crater 12 miles (20 kilometers) in diameter. The new observations, conducted from April through October 2016, show an increase in the amount of ice on the crater wall. “This is the first direct detection of change on the surface of Ceres,” said Andrea Raponi of the Institute of Astrophysics and Planetary Science in Rome.

Raponi led the new study, which found changes in the amount of ice exposed on the dwarf planet. “The combination of Ceres moving closer to the sun in its orbit, along with seasonal change, triggers the release of water vapor from the subsurface, which then condenses on the cold crater wall. This causes an increase in the amount of exposed ice. The warming might also cause landslides on the crater walls that expose fresh ice patches.”

There is a certain irony here. For eons, the only alien body that humans were able to get a good look at, the Moon, was also an object where almost nothing changed. Even today, after humans have visited its surface and numerous orbiting spacecraft have photographed its surface in numbing detail, the Moon has generally been found to be stable and unchanging. Though impacts do occur, and the surface does evolve over time, the Moon is probably one of the most static bodies in the solar system.

The irony is that this lunar stability gave us an incorrect impression of the rest of the solar system. Based on the Moon, it was assumed that airless or almost airless bodies like Mercury, Mars, Pluto, the large moons of Jupiter and Saturn, and asteroids like Ceres would also be stable and unchanging. What we have instead found is that the Moon is the exception that proves the rule. Most of these other worlds are unlike the Moon. They show a lot of surface evolution, over relatively short time scales. They change.

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Kepler to run out of fuel in the coming months

1:08 pm

After nine years of success, the Kepler space telescope is running out of fuel, which will force an end to the mission sometime in the next several months.

The Kepler team is planning to collect as much science data as possible in its remaining time and beam it back to Earth before the loss of the fuel-powered thrusters means that we can’t aim the spacecraft for data transfer. We even have plans to take some final calibration data with the last bit of fuel, if the opportunity presents itself.

Without a gas gauge, we have been monitoring the spacecraft for warning signs of low fuel— such as a drop in the fuel tank’s pressure and changes in the performance of the thrusters. But in the end, we only have an estimate – not precise knowledge. Taking these measurements helps us decide how long we can comfortably keep collecting scientific data.

They are doing a dance here. If they run out of fuel while collecting data, that data will be lost. If they stop collecting data too soon, however, to transmit it to Earth, they will not maximize the data obtained.

Meanwhile, the next exoplanet hunter, TESS, is scheduled for launch on April 16 on a Falcon 9 rocket.

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Bezos releases video of BE-4 static fire test

9:21 am

Capitalism in space: Jeff Bezos today released a video of a 114 second engine test of Blue Origin’s BE-4 engine.

I have embedded the video below the fold. The test was at 65% power, but it strongly suggests that the company is getting close to certifying this engine for use, which will then allow ULA to make its final decision on whether to use it in its Vulcan rocket. It also will allow Blue Origin to begin construction of its own New Glenn rocket, which is set to begin flights in 2020.
» Read more

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Orbital ATK unveils new satellite servicing robots

9:14 am

Capitalism in space: At a satellite conference yesterday Orbital ATK unveiled a new robotic satellite servicing system utilizing two new robots, the Mission Robotic Vehicle (MRV) and Mission Extension Pods (MEP), simpler yet also more sophisticated versions of its Mission Extension Vehicle (MEV) which is already planned for launch later this year.

Under the new approach, a Mission Robotic Vehicle, based on the MEV design, will carry 10 to 12 Mission Extension Pods. The Mission Robotic Vehicle would approach a customer’s satellite and use a robotic arm to attach a pod to that satellite. The pod would then take over stationkeeping, proving up to five years of additional life. The Mission Robotic Vehicle and Mission Extension Pods are intended to provide new solutions to customers that don’t need the full-fledged capabilities of the MEV. The pods have a shorter lifetime than an MEV and do not provide attitude control capabilities.

The new system, designed to be ready for service in 2021, largely incorporates existing technology. The Mission Robotic Vehicle is a version of the MEV and the Mission Extension Pods is based on Orbital ATK’s ESPASat small satellite bus.

One new technology will be the robotic arm. Tom Wilson, president of SpaceLogistics, the Orbital ATK subsidiary offering the satellite life extension program, said the company was considering technology from NASA as well as Europe. “We’ve got a couple of different options,” he said, but hasn’t yet made a decision on the specific technology.

Orbital ATK’s new design will certainly cost its customers a lot less, since its design that will allow them, with one launch, to place a robot in orbit capable of servicing up to twelve different satellites. You want to extend the life of your communications satellite by five years? You call Orbital ATK, and they use their already orbiting Mission Robotic Vehicle to install an extension pod on your satellite. This way they can spread the cost of the launch across a dozen different customers.

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Chandra looks back at the Crab Nebula

8:22 am

Link here. It is almost twenty years since the Chandra X-Ray Observatory was launched, and in celebration the science team have released another X-ray image of the Crab Nebula, taken in 2017 in league with an optical image from the Hubble Space Telescope and an infrared image from the Spitzer Space Telescope. They have also provided links to all similar past images, going back to 1999.

Some of the images are actually videos, in 2002 and 2011, showing the Crab’s dynamic nature. You can actually see flares and waves of radiation rippling out from its center.

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New Horizons team picks Ultima Thule as nickname for 2014 MU69

5:27 pm

In their continuing effort to give interesting names to their targets, the New Horizons team has chosen the name Ultima Thule for 2014 MU69, the Kuiper Belt object it will fly past on January 1, 2019.

With substantial public input, the team has chosen “Ultima Thule” (pronounced ultima thoo-lee”) for the Kuiper Belt object the New Horizons spacecraft will explore on Jan. 1, 2019. Officially known as 2014 MU69, the object, which orbits a billion miles beyond Pluto, will be the most primitive world ever observed by spacecraft – in the farthest planetary encounter in history.

Thule was a mythical, far-northern island in medieval literature and cartography. Ultima Thule means “beyond Thule”– beyond the borders of the known world—symbolizing the exploration of the distant Kuiper Belt and Kuiper Belt objects that New Horizons is performing, something never before done.

“MU69 is humanity’s next Ultima Thule,” said Alan Stern, New Horizons principal investigator from Southwest Research Institute in Boulder, Colorado. “Our spacecraft is heading beyond the limits of the known worlds, to what will be this mission’s next achievement. Since this will be the farthest exploration of any object in space in history, I like to call our flyby target Ultima, for short, symbolizing this ultimate exploration by NASA and our team.”

Their spacecraft will be the first to see this object up close. It is their right to name it. And if the International Astronomical Union objects, they can go to hell. I guarantee that future generations of space-farers will know this tiny world by this name, and this name alone.

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Facebook’s new algorithm tilts left significantly

2:14 pm

Reason #34,563,112 why I don’t use Facebook: An analysis of Facebook’s new algorithm shows that it boosts traffic to left-leaning news sources while significantly depressing traffic to conservative sites.

Liberal publishers have gained about 2 percent more web traffic from Facebook than they were getting prior to the algorithm changes implemented in early February.

On the other hand, conservative publishers have lost an average of nearly 14 percent of their traffic from Facebook.

Interestingly, up until this month there had been a steady rise in Facebook traffic for Behind the Black. This month, suddenly, that traffic has dropped.

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Public meeting at White House between Israeli and Saudi, UAE, and Qatari officials

11:00 am

A public meeting today was held at the White House between Israeli and Saudi, UAE, and Qatari officials, aimed at addressing the humanitarian situation at the Gaza Strip.

The summit on Gaza, called by Jared Kushner, the US president’s son-in-law and senior adviser on Middle East peace, as well as Jason Greenblatt, his special representative for international negotiations, marks an unprecedented moment for Israeli diplomacy, as their dialogue with officials from Arab states is publicly recognized for the first time. The Trump administration planned the meeting over the course of several weeks and released a list of attendees the morning of the summit, which also included officials from Egypt, Jordan, Canada and various European countries.

Palestinian Authority officials did not attend the meeting.

“We regret that the Palestinian Authority is not here with us today,” Greenblatt said in opening remarks to the conference. “This is not about politics. This is about the health, safety and happiness of the people of Gaza, and of all Palestinians, Israelis and Egyptians. …As you know, we are here today to consider ideas on how to address the humanitarian challenges in Gaza – a topic that has long been at the forefront of all of our minds,” Greenblatt continued. “It has certainly been on mine.”

Greenblatt and Kushner are putting final touches on a comprehensive peace plan for the Israeli-Palestinian conflict, of which the resolution of the Gaza crisis is an integral part. At the moment, White House officials are deciding how to rollout the plan within a matter of weeks or a few short months.[emphasis mine]

It increasingly appears that the U.S., Israel, and the Sunni Arab states are going to work out a peace deal that excludes the terrorist and Iran-supported Palestinian leadership. That plan might even require the removal of that leadership, which would only be beneficial to the people presently trapped under their rule.

One more note: This is the first such public meeting between Israel and many of these Arab countries since 1991. In a normal world, this meeting would thus garner major headlines in all the major news sources. It indicates a major change in the relations between these nations. The Sunni Arab nations are getting comfortable with Israel, and are more willing to work with it as a neighbor, in public.

Not in our childish news world today, however, which is more interested in reporting UFO stories and fake Russian/Trump collusion stories.

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The Vegas Massacre Exposé: What Really Happened?

9:11 am

Link here. The article reviews the state of the investigation and notes the endless numbers of issues with it, from contradictory public statements to mysterious police actions to questionable events. The author raises good questions, and shines a light on a story that reeks of corruption and dishonesty, at the highest levels of the FBI and federal government.

There are those who will immediately begin speculating wild conspiracy theories. The story doesn’t require crazy theories, only simple but harsh ones, as noted by the author, linking the Las Vegas massacre to ISIS and some ISIS-allied Saudi power-brokers who have since been defanged by the Saudi government, all with the covert approval of the Trump administration, which also agreed to keep those Saudi links to ISIS and the Las Vegas massacre secret in order to help that friendly Saudi government.

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Blue Origin gets its fourth launch contract for New Glenn

8:50 am

Capitalism in space: Blue Origin has signed its fourth launch contract for putting satellites in orbit with its New Glenn rocket, this time with the Japanese company Sky Perfect JSAT.

Blue Origin now has satellite launch agreements with four companies. Last year, the company reported deals with Eutelsat, OneWeb and mu Space. Today Blue Origin said its memorandum of understanding with Thailand-based mu Space has been converted into a firm contract for a geostationary satellite launch.

No launch price was revealed, though I suspect the price is very competitive with SpaceX prices.

I expect that by the mid-2020s, these two companies will be completely dominating the commercial large satellite market. The one threat to that dominance will be whether that large satellite market will be able to compete with the new tiny cubesat and nanosat market that is only now beginning to develop. It could be that by the mid-2020s, almost all unmanned communications satellites will be small, and that the market for these big rockets will have shifted to manned space.

More likely, we will have a very vibrant smallsat market, a vibrant largesat market, and a emerging manned market, all vying for launch contracts from many different rocket companies. Things should be quite exciting.

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