Signal to Voyager-2 confirms upgrade of NASA’s Deep Space Network

After months of downtime in order to install a major and very badly needed upgrade to NASA’s Deep Space Network (DSN) (the worldwide array of radio dishes used to communicate with planetary probes throughout the solar system) a test command to Voyager-2 beyond the orbit of Pluto was sent, received, and executed successfully this week, proving the upgrade is working.

The call to Voyager 2 was a test of new hardware recently installed on Deep Space Station 43, the only dish in the world that can send commands to Voyager 2. Located in Canberra, Australia, it is part of NASA’s Deep Space Network (DSN), a collection of radio antennas around the world used primarily to communicate with spacecraft operating beyond the Moon. Since the dish went offline, mission operators have been able to receive health updates and science data from Voyager 2, but they haven’t been able to send commands to the far-flung probe, which has traveled billions of miles from Earth since its 1977 launch.

Among the upgrades to DSS43, as the dish is known, are two new radio transmitters. One of them, which is used to talk with Voyager 2, hasn’t been replaced in over 47 years. Engineers have also upgraded heating and cooling equipment, power supply equipment, and other electronics needed to run the new transmitters.

The successful call to Voyager 2 is just one indication that the dish will be back online in February 2021.

The upgrade has been overdue for years, and is essential to provide sufficient communications capability for the future interplanetary mission presently planned.

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Layered mesa on Mars

Layered mesa on Mars
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on June 24, 2020 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a distinctive mesa in a mountainous region in the cratered highlands of Mars, just north of Hellas Basin, the deepest basin on the red planet.

The mesa’s most distinctive feature are its terraced layers, a feature that MRO has found in numerous other places surrounding and inside Hellas Basin (see for example the cool images here, here, here, here, here, and here.)

On Earth the assumption would be that these terraced layers imply different sedimentary layers that erode at different rates, as best illustrated by the Grand Canyon in Arizona. On Mars that assumption is not unreasonable, but unlike Earth, those layers could not have been formed in connection with large ocean bodies creating seafloor layers from the deposit of sealife over centuries. Some other geological process over time formed them, with volcanism, either from volcanoes or impact, being the most likely.
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Sunspot update: An active October heralds the likely end of solar minimum

With the start of a new month it is once again time to publish another sunspot update. NOAA yesterday updated its monthly graph for tracking the Sun’s monthly sunspot activity. As I have done now every month since this website started in 2011, it is posted below, with additional annotations by me to show the past solar cycle predictions.

Unlike September, which saw almost no sunspots, October was a very active month, with the amount of sunspots far exceeding prediction. Furthermore, every sunspot during the month had a polarity assigning it to the new solar cycle, not the last.

» Read more

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Vote for Trump, but even more, vote Republican across the board

Trump

I’ve said it before but I will say it again. Donald Trump is the right candidate for president, and everyone who hasn’t yet voted should vote for him tomorrow, both because he kept his promises and has actually done a decent job as president.

However, it is even more important to vote for Republicans across the board. If Trump is re-elected but the voters do not give him strong majorities in both houses of Congress, his ability to do what the voters want will be seriously circumscribed. And if the Democrats win control of both houses of Congress, expect that their first order of business will be to impeach Trump and then try to remove him from office. The goal will be to quickly nullify your vote for Trump, by the party of segregation, slavery, riots, looting, and stolen elections.

And on the local city and state level things are quite simple. » Read more

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SpaceX to live stream 50,000 foot hop of Starship

Capitalism in space: Elon Musk yesterday announced that SpaceX will publicly live stream the 50,000-foot hop of Starship prototype #8, expected sometime in the next two weeks. His tweet:

Sure, although it might be quite a short livestream! Lot can go wrong, but we’ll provide video, warts & all. You will see every frame that we do.

Up until now the public has had to depend on the independent live streams being put out by local residents still living in Boca Chica, Texas, which did not know SpaceX’s exact schedule. When SpaceX does it they will likely provide more specific launch times. They will also probably provide detailed accurate commentary.

Also, this update on the status of Starship development notes that the primary goal of that hop is testing the ability of the ship’s fins and systems to control the ship’s initial descent on its return to Earth, flying on its side like the Space Shuttle. If they have problems getting the ship upright for a vertical landing and it ends up in the ocean that will not surprise them. A successful vertical landing would be icing on the cake.

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Another movie of OSIRIS-REx’s sample-grab-and-go at Bennu

The OSIRIS-REx science team has released another movie showing the sample-grab-and-go at Bennu, this time from a different camera.

The movie, made up of 189 images taken over three hours by the spacecraft’s navigation camera NavCam-2, can be seen at the link.

In the middle of the sequence, the spacecraft slews, or rotates, so that NavCam 2 looks away from Bennu, toward space. OSIRIS-REx then performs a final slew to point the camera (and the sampling arm) toward the surface again.

As the spacecraft nears site Nightingale, the sampling arm’s shadow comes into view in the lower part of the frame. Shortly after, the sampling head impacts site Nightingale (just outside the camera’s field of view to the upper right) and fires a nitrogen gas bottle, which mobilizes a substantial amount of the sample site’s material. Several seconds later, the spacecraft performs a back-away burn and the sampling arm’s shadow is visible against the disturbed surface material.

The team continues to investigate what caused the extremely dark areas visible in the upper and middle parts of the frame. The upper area could be the edge of the depression created by the sampling arm, a strong shadow cast by material lofted from the surface, or some combination of the two. Similarly, the middle dark region that first appears in the lower left of the image could be a depression caused by one of the spacecraft thrusters as it fired, a shadow caused by lofted material, or a combination of both.

It strikes me that getting post impact images of Nightingale is essential, if at all possible.

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Climate scientists are science’s biggest frequent flyers

From the people who want to shut down all fossil fuel technology: A newly published survey of 1,400 scientists from 59 countries has found that climate scientists fly more than researchers in any other field.

Climate experts — who accounted for about 17% of respondents — take five flights per year on average, the study found, whereas researchers who specialize in other fields took four. Climate scientists also fly more often for work than their peers, but take fewer international flights for personal reasons. Air travel becomes more frequent with job seniority across all disciplines, with climate-change professors flying on average nine times per year, and those in non-climate disciplines flying eight times.

Although the difference isn’t enormous, it adds up to a “colossal amount of flying”, says Lorraine Whitmarsh, an environmental psychologist at the University of Bath, UK, who led the study. “These figures are really quite stark, I think, and should be a wake-up call for all of science.”

The survey took place prior to the Wuhan panic, and thus does not tell us about the new fear-driven flying patterns of scientists.

That this story comes from the journal Nature,. which in recent years has become increasing controlled by the leftist propaganda machine, suggests the data is quite convincing. Nature wouldn’t allow any publication of any paper that throws a bad light on global warming or its researchers, unless the data was overwhelming and impossible to ignore.

It also tells us that climate scientists themselves don’t really believe their own doomsday predictions about global warming. Before the Wuhan panic they would routinely run numerous international conferences, often in wonderful warm-weather vacation spots in the midst of winter, and would flock there in the thousands to enjoy that warm weather even as they repeatedly called for government restrictions on everyone else. The article quotes one scientist, who tries to justify this travel:

International conferences might also have an influence, says Kim Cobb, a climate scientist at the Georgia Institute of Technology in Atlanta. Meetings to coordinate global mitigation efforts — such as of the Intergovernmental Panel on Climate Change — involve hundreds of researchers from different countries. “You need to have a frequent series of meetings to keep up with the data, to advance our findings, to make sure that they are disseminated across the community,” says Cobb. [emphasis mine]

I highlight her quote because her reasons for attending such conferences are unadulterated garbage. While it is important to personally get together periodically with other scientists in the field to exchange results (something that is unfortunately no longer happening because of fear of COVID-19), you don’t need to do this “frequently” in today’s intenet society. Nor do you need to do it to “keep up with the data” or to distribute it to everyone else. If anything, such conferences are very inefficient for achieving these goals. The internet does it far better.

No, the purpose of many of these very big climate conferences had nothing to do with science. I’ve attended a few, and noticed how little real science was discussed. Instead, these conferences were political gatherings, aimed at organizing political action and regulation, as determined by these high-flying climate politicos. And they were always in nice warm weather locations, in winter.

To sum up: Until the climate field acts like it believes its own pontifications about the evils of fossil fuels, no one else should.

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A buried crater on Mars

Close overview map

The overview map to the left indicates the general terrain surrounded today’s cool image. The white rectangle is the area covered by this image, taken on July 4, 2020 by the high resolution camera on Mars Reconnaissance Orbiter. If you look close you can see that this photograph covers the eastern rim of what looks like an ancient and mostly buried crater on Mars. This unnamed crater is about 17 miles across.
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New data: young red dwarf stars are not nice stars for life

New data from both the Chandra X-ray Observatory and the Hubble Space Telescope has reinforced earlier data that suggested the strong flares emitted by young red dwarf stars make them inhospitable to the development of life on any planet in the habitable zone.

A new study using NASA’s Chandra X-ray Observatory and Hubble Space Telescope examined the red dwarf called Barnard’s Star, which is about 10 billion years old, more than twice the current age of the Sun. Red dwarf stars are much cooler and less massive than the Sun, and are expected to live much longer lives because they do not burn through their fuel as fast. Barnard’s Star is one of the closest stars to Earth at a distance of only 6 light-years.

Young red dwarfs, with ages less than a few billion years, are known as strong sources of high-energy radiation, including blasts of ultraviolet light and X-rays. However, scientists know less about how much damaging radiation red dwarfs give off later in their lifetimes.

The new observations concluded that about 25% of the time, Barnard’s Star unleashes scorching flares, which may damage the atmospheres of planets closely orbiting it. While its only known planet does not have habitable temperatures, this study adds to evidence that red dwarfs may present serious challenges for life on their planets.

It is very important to remember that this data makes difficult the formation of life, as we know it. Since we know so little about such processes, as well as the formation processes of solar systems, it is too early to say whether no life can ever form around such stars.

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