Year: 2014

Ice photographed in Mercury’s permanently shadowed craters?

12:08 pm

Kandinsky Crater on Mercury

Using Messenger, scientists think they have obtained optical images of the ice that is thought to exist in the permanently shadowed craters of Mercury.

Although the polar deposits are in permanent shadow, through many refinements in the imaging, the WAC [Messenger’s camera] was able to obtain images of the surfaces of the deposits by leveraging very low levels of light scattered from illuminated crater walls. “It worked in spectacular fashion,” said Chabot.

The team zeroed in on Prokofiev, the largest crater in Mercury’s north polar region found to host radar-bright material. “Those images show extensive regions with distinctive reflectance properties,” Chabot said. “A location interpreted as hosting widespread surface water ice exhibits a cratered texture indicating that the ice was emplaced more recently than any of the underlying craters.” In other areas, water ice is present, she said, “but it is covered by a thin layer of dark material inferred to consist of frozen organic-rich compounds.” In the images of those areas, the dark deposits display sharp boundaries. “This result was a little surprising, because sharp boundaries indicate that the volatile deposits at Mercury’s poles are geologically young, relative to the time scale for lateral mixing by impacts,” said Chabot. [emphasis mine]

The image on the right is of the crater Kandinsky, and shows a very intriguing bright area on the crater’s central peak.

I highlighted that one word in the the scientist’s quote above to emphasize how preliminary these conclusions are. The images are intriguing, but I would not at this time bet a lot of money on these conclusions. Ice might be the best explanation for this data, at this time, but I would not be surprised at all if later research finds this conclusion to be false.

0 comments

“We’re not gonna move.”

11:20 am

Watch the video below the fold as a string of university officials from Southern Oregon University harass several students whose only action is standing on the sidewalk and handing out Constitutions.

It made me very proud to watch these college students defy authority to defend their very clear constitutional rights. The school wanted them to move to the very small restricted “Free Speech Zone”. The students refused, noting that the Constitution and Bill of Rights essentially designates the entire U.S. a free speech zone. The students also refused to give their names to one official, noting that they were uncomfortable doing that. Since the official had no authority to take their names, the official had to back down.

In the end, the school did nothing to them, and they remained on the sidewalk, handing Constitutions out of fellow Americans. Kudos to them all! We need more Americans willing to stand up like this and not be cowed.
» Read more

4 comments

The silent Obamacare protest of doctors

10:11 am

Faced with Obamacare’s high costs and deadening bureaucracy, doctors are finding ways to opt out.

Physicians across the country are responding to this evolution — most recently in response to the Affordable Care Act — by shielding their practices from government interference. This comes in many forms: Rejecting new Medicare and Medicaid patients, transitioning to third-party-free practices and ditching small private practices for employed positions with ever-larger hospital-owned networks.

Incompetence is incompetence, and if you are so stupid as to write an unworkable law that conservatives rightly predicted would do exactly the opposite of what you want — raise costs instead of lowering them, shrink health coverage instead of widening it, corrupt health care instead of improving it — than no one should be surprised if you exhibit incompetence in other areas as well. For example, the incompetence demonstrated by President Obama and the Democratic Party by imposing Obamacare on us is now being illustrated again in how Obama is handling the arrival of ebola on American shores: badly, foolishly, and with nothing but failure as a result.

7 comments

First results back from the U.S. MAVEN Mars probe

9:13 am

Scientists have released the first results from NASA’s MAVEN probe orbiting Mars, designed to study that planet’s upper atmosphere.

As expected, the spacecraft has quickly found evidence of the Martian atmosphere leaking away into space.

Hydrogen appears to be leaving the planet’s atmosphere in clumps and streams that reach about 10 Mars radii into space, said Mike Chaffin, a MAVEN scientist also at the University of Colorado, who discussed the results at a 14 October news briefing. The hydrogen comes from water vapour that breaks apart in the upper atmosphere; because hydrogen is so much lighter than oxygen, it escapes into space relatively easily. “That’s effectively removing water from the Martian atmosphere,” says Chaffin.

Other images show oxygen and carbon drifting away from the planet, although these heavier atoms cluster closer to Mars than hydrogen. Deep within the atmosphere, oxygen forms ozone molecules that accumulate near Mars’s south pole.

0 comments

Houston demands that pastors hand in their sermons on homosexuality or be held in contempt of court.

3:36 pm

Fascists: The city of Houston has issued subpoenas demanding that pastors hand in any sermons on the subjects of homosexuality, gender identity or the city’s first openly gay mayor Annise Parker or be held in contempt of court.

Among those slapped with a subpoena is Steve Riggle, the senior pastor of Grace Community Church. He was ordered to produce all speeches and sermons related to Mayor Annise Parker, homosexuality and gender identity. The mega-church pastor was also ordered to hand over “all communications with members of your congregation” regarding the non-discrimination law. “This is an attempt to chill pastors from speaking to the cultural issues of the day,” Riggle told me. “The mayor would like to silence our voice. She’s a bully.”

The only reason the city government and the mayor are demanding these sermons is to silence their opponents. Their actions are blatant violations of the first amendment and the freedom of speech, and are an effort to oppress any opposition to their own personal political agendas.

9 comments

1 in 4 Americans can no longer afford to see their doctor

2:30 pm

Finding out what’s in it: Because of the high cost and high deductibles of Obamacare-mandated health insurance plans, 25% of Americans now believe they can no longer afford healthcare.

That any of these Americans are even considering voting Democratic in any future election is shameful. They conceived it, they wrote it, and then they shoved it down our throats, in one of the most partisan maneuvers ever seen in these United States. Until the Democratic party moves to fix the problems caused by this monstrous law — mostly by repealing it — they do not deserve the support of anyone.

1 comment

Update on Bigelow’s ISS module

9:14 am

This article is a nice overview of Bigelow’s planned inflatable module for ISS, due to launch next year, and includes some good images.

I found this paragraph especially intriguing:

Earlier this year, Bigelow announced how much it’ll cost you to spend some time inside the BA 330 when it launches. Expect to pay $25 million for a sixty day lease of one-third of the station — if you can get yourself there and back. Should you need a ride, round-trip taxi service between SpaceX and your local launching pad will run you an additional $26.5 million.

That’s a total cost of just over $50 million for a sixty day stay in space.

7 comments
1 … 31 32 33 34 35 … 170