Year: 2016

Juno swings back towards Jupiter

7:55 am

Juno has now passed the farther point from Jupiter in its first orbit and has started dropping back down to the gas giant.

Juno arrived at Jupiter on July 4, firing its main rocket engine as planned for 35 minutes. The flawless maneuver allowed Jupiter’s gravity to capture the solar powered spacecraft into the first of two 53.4-day-long orbits, referred to as capture orbits. Following the capture orbits, Juno will fire its engine once more to shorten its orbital period to 14 days and begin its science mission.

But before that happens, on Aug. 27, Juno must finish its first lap around Jupiter, with a finish line that represents the mission’s closest pass over the gas giant. During the encounter, Juno will skim past Jupiter at a mere 2,600 miles (4,200 kilometers) above the cloud tops.

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Getting and Installing Linux – Part 6

6:01 am

Installing Windows using VirtualBox

by James Stephens

Today I will be installing Windows on VirtualBox. VirtualBox allows me to easily install and run Windows on my Linux computer without having to partition, format or otherwise disturb my hard drive. Once installed booting into the Windows guest is easy, just open VirtualBox and select Windows and hit start. Given the fact a virtual machine shares hardware resources with it’s host, generally a 64 bit host operating system can only host a 32bit guest operating system. Windows in most cases is still a 32 bit operating system.

First of all I will download VirtualBox via the my distribution’s Software Manager. Once it’s installed you will usually find its shortcut under Applications/System/Oracle VM VirtualBox in your application launcher. Click on it and VirtualBox will open to its Welcome massage. To create a virtual machine, in this case Windows, choose “new” in the VirtualBox tool bar.

Create Virtual Machine dialogue

The create virtual machine dialogue will appear where you will give the guest operating system a descriptive name and select its type and version, such as Windows XP.
» Read more

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More Junk Science and Journalism

11:46 am

I can’t stand it. I just can’t stand it. It keeps happening and I just can’t stand it.

Yesterday there was this absurd short news piece posted on the website of the so-called journal Science, “Apollo astronauts much more likely to die from heart disease”. describing a research paper published by one of Nature’s side journals, Scientific Reports. Before I even looked at the story I said to myself, “How can they possibly come to that conclusion considering the tiny number of humans who have ever traveled beyond Earth orbit? The sample will simply be too small to allow for any such finding.”

Then I looked at the article and found my instincts confirmed. As Steve Milloy noted on his very aptly named website, Junk Science,

Yes, the result is based on a total of three (3) cases of heart disease deaths of out seven (7) Apollo astronauts. Past the vanishingly small sample size and even smaller number of cases, heart disease is a natural disease of aging and the Apollo lunar astronauts were 10 years older than the other comparison groups.

To put it more bluntly, this was a garbage piece of very bad science. While it was somewhat embarrassing for a Nature journal to publish it, it was far more disgraceful for the journal Science to highlight it. I, however, don’t have to join these two peer-review journals and participate in their stupidity, and thus I made no mention of the story on Behind the Black, because it is my policy to not waste much time on bad science, unless I think that bad science is going to have bad repercussions.

Well the bad repercussions have arrived. Since yesterday, the following so-called news organizations have run with this story, without the slightest indication that they have faintest understanding of science, statistics, or plain common sense:
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Martian gullies not formed by water flow

9:38 am

The uncertainty of science: Spectroscopy of many of the gullies on Mars strongly suggests that water had nothing to do with their formation, even though these gullies resemble closely similar gullies on Earth that were carved by flowing water..

Color coding in light blue corresponds to surface composition of unaltered mafic material, of volcanic origin. Mafic material from the crater rim is carved and transported downslope along the gully channels. No hydrated minerals are observed within the gullies, in the data from CRISM, indicating limited interaction or no interaction of the mafic material with liquid water. These findings and related observations at about 100 other gully sites on Mars suggest that a mechanism not requiring liquid water may be responsible for carving these gullies on Mars. (Gullies on Mars are a different type of feature than seasonal dark streaks called recurring slope lineae or RSL; water in the form of hydrated salt has been identified at RSL sites.) [emphasis mine]

In other words, these gullies were formed by flowing lava, not water. Considering Mars’s lower gravity, one third that of Earth’s, we should not be surprised if lava is capable of doing things there that it is not generally capable of doing on Earth. In fact, we should remind ourselves constantly that Mars is an alien planet, and that conditions there are different enough to make any predictions based on our knowledge of Earth very unreliable.

More details here.

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Making a choice in November

9:11 am

Two articles today provide some interesting and worthwhile information and perspective on at least two of the candidates running for President in November.

The first, Why Voting for Donald Trump Is a Morally Good Choice, makes its argument from a Christian and religious perspective. I know there is at least one regularly reader of Behind the Black who will agree with this author’s arguments wholeheartedly, and I will say that the essay at the link provides some very compelling arguments in favor of voting for Donald Trump. While he makes many very effective arguments, especially on the issue of the the Supreme Court, I think for me his most effective point comes when he asks “How can we know that Trump won’t change his mind?”:
» Read more

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Sierra Nevada preps for Dream Chaser glide tests

8:31 am

The competition heats up: In preparing its Dream Chaser engineering test vehicle for glide tests in California this fall, Sierra Nevada unveiled it to the press yesterday.

This is essentially the test vehicle’s first public viewing since its one glide test, when the front landing gear did not deploy correctly and the vehicle was damaged during landing. Since the landing gears were not the gears being developed for the flight craft, and since the glide test itself went well, both the company and NASA considered that glide test to be a success.

It has now been refurbished for new tests in conjunction with the company’s contract to use Dream Chaser as a cargo ship for NASA.

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SpaceX test fires one of its recovered first stages

8:16 am

The competition heats up: SpaceX has completed a full duration test firing of one of its recovered first stages.

The JCSAT-14 stage [which was the third recovered stage and the second to land on a barge] isn’t expected to fly again due to the initial evaluations into damage received via its high-velocity return. However, it will still provide useful test data. “Most recent rocket took max damage, due to very high entry velocity,” noted Elon Musk. “Will be our life leader for ground tests to confirm others are good.”

That testing on the JCSAT-14 booster began on Thursday, with the stage placed on the test stand at McGregor – ironically after the stand was vacated by the JCSAT-16 first stage – which recently completed testing and has since been shipped to Florida for its launch next month. The returned stage is also sported a new cap, which may be providing some simulated weight to aid the required data gathering during the test firing.

The booster conducted a long firing of 2 minutes 30 seconds (the duration of first stage flight), that began around 7pm local time on Thursday (per L2 McGregor), which will provide vital data on the returned stage as SpaceX continue preparations for validating one of its recovered booster for a re-launch later this year.

It is once again important to point out that SpaceX’s engineers here have an enormous advantage over every other rocket engineer who has ever lived. They have in hand a recovered first stage that was actually used to launch a satellite into orbit, giving them the ability to test it and find out precisely how such equipment fares during launch. This will give them the ability, unavailable to others, to make engineering improvements that will make future first stages even more reliable and reusable.

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Documents prove IRS targeted conservatives because of ideology

10:04 am

Working for the Democratic Party: Newly released FBI documents show that the IRS purposely aimed its harassment against conservatives and tea party groups solely because of their opposition to the Democratic Party and the Obama administration.

The FBI 302 documents confirm the Treasury Inspector General for Tax Administration (TIGTA) 2013 report that said, “Senior IRS officials knew that agents were targeting conservative groups for special scrutiny as early as 2011.” Lerner did not reveal the targeting until May 2013, in response to a planted question at an American Bar Association conference. The new documents reveal that then-acting IRS Commissioner Steven Miller actually wrote Lerner’s response: “They used names like Tea Party or Patriots and they selected cases simply because the applications had those names in the title. That was wrong, that was absolutely incorrect, insensitive, and inappropriate.”

The FBI documents also reveal that IRS officials stated that the agency was targeting conservative groups because of their ideology and political affiliation in the summer of 2011. According to one senior tax law specialist, “The case seemed to be pulled because of the applicant’s political affiliation and screening is not supposed to occur that way … [Redacted] said he thought the cases were being pulled based upon political affiliations.” And IRS senior official Nancy Marks, appointed by Miller to conduct an internal investigation stated, “Cincinnati was categorizing cases based on name and ideology, not just activity.”

Read the whole thing. The documents show that the targeting was under the direct supervision of high IRS supervisors such as Lois Lerner and Holly Paz. The documents also show that the IRS commissioner at the time, Douglas Shulman, lied to Congress when he claimed that “There is absolutely no targeting.” He was clearly informed at the time that conservatives were being targeted for harassment.

Sadly, I will not celebrate when and if Donald Trump uses the precedent of this scandal (whereby the government got away with using the IRS to destroy its opponents) to go after his opponents. I fully expect him to do so, and though some of them might deserve it for their own illegal and oppressive behavior, such retaliation by Trump will only signal the coming end to American freedom.

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