Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

A Yellow Supergiant Progenitor of a Massive Star Supernova in M51

3:31 pm

The uncertainty of science: Astronomers have determined that the star that went supernova in the Whirlpool Galaxy (M51) in June — making it the nearest supernova in 25 years — was a yellow supergiant star, not an aging red supergiant as predicted by theory. From the preprint paper:

Despite the canonical prediction that Type II supernovae arise from red supergiants, there is mounting evidence that some stars explode as yellow supergiants. A handful of Type II supernovae have been observed to arise from yellow supergiants: supernovae 1993J, 2008cn, and 2009kr. The locations of the progenitors on the Hertzsprung-Russell diagram shows clearly that these stars are not located on the predicted end points for single star stellar evolution tracks. In addition, despite arising from supposedly similar yellow supergiant progenitors, these supernovae display a wide range of properties.

The Hertzsprung-Russell diagram is a graph mapping the color of stars against their luminosity. Because color and brightness change as the star evolves over time, the graph is used by astronomers to track the birth, growth, and death of stars. That these yellow supergiants don’t appear to be at “the predicted end points for single star evolution” on the diagram is a serious problem for the theorists who have tried to explain what causes this particular type of supernova.

Which also means astronomers are still unable to tell us what stars in the sky are most likely to go supernova in the future.

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Washington union held in contempt for terminal violence

10:04 am

Union civility: A union in Washington state has been held in contempt for the violence that took place during a protest at a grain terminal. Some testimony:

Security guard Charlie Cadwell, employed by Columbia Security for patrols at the Longview grain terminal for the past two months, told the judge of the harrowing experience: Every protester he saw that night was carrying a weapon – baseball bats, lead pipes, garden tools. “I didn’t see a longshoreman who didn’t have something in his hands,” he said.

He was was pulled out of his car by one longshoreman, and another man swung a metal pipe at him, he said. “I told him, ‘You have 50 cameras on you and law enforcement is on its way,'” Cadwell said. “He said, ‘(expletive) you. We’re not here for you, we’re here for the train.'”

In the meantime, someone drove off with his car and eventually ran it into a ditch. Cadwell said about 40 to 50 people were throwing rocks at him, and that he was hit between his eyes and in his knee.

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Akatsuki’s engine too damaged to put the probe into Venus orbit in 2015

9:23 am

The engine of Japan’s troubled Venus probe, Akatsuki, has been found too damaged to put the probe into Venus orbit.

JAXA conducted a test ignition of the probe’s main engine on Wednesday to prepare for another attempt to send it into orbit in 2015. But the thrust produced was only one-eighth the amount anticipated, the space agency said. The damage the engine suffered last December when JAXA ignited it in the initial attempt to send the probe into orbit around Venus appears to be more serious than thought, JAXA said.

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Soyuz crew returns safely to Earth, despite radio problems

9:16 am

One of the two three-man crews on ISS have returned safely to Earth, despite an unexpected communciations blackout during their descent.

In related news, the Russians have slightly delayed the launch dates for the next manned flights to ISS, which also means that the next test flight of Falcon 9/Dragon will have to be delayed until 2012. Moreover, the Russians are once again balking at allowing Dragon to dock with ISS on this first flight.

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Questions about White House pressure for campaign donor in GPS controversy

3:19 pm

A four-star Air Force general told a congressional committee last week that the White House pressured him to soften his testimony concerning the military’s opposition to the technology being used by the broadband company Lightsquared– a major Democratic campaign donor — because it interfered with GPS signals.

In a related update, LightSquared boss said Wednesday that the company is near an engineering breakthrough that will solve the technical issues that worry GPS users.

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Private Japanese weather company to launch satellite to track Arctic Ice

9:14 am

A private Japanese weather company plans to launch a satellite to track Arctic ice for use by shipping.

The satellite will transmit images and information about sea ice in the Arctic Ocean. Weathernews will combine the information with available data on sea currents, weather and wave height to provide consumers with a finished product enabling safe navigation along the northern route.

Though I know most people are skeptical of this idea, I think that all weather information should be gathered and sold by private companies, as Weathernews is doing above. For example, the Weather Channel makes its money providing weather information to the public. If they didn’t get the satellite data free from NOAA weather satellites, they would have every reason to launch their own satellites.

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Nobel prize winner resigns from the American Physical Society over its support of global warming

12:34 am

A Nobel prize winner has bluntly resigned from the American Physical Society (APS) because of its unquestioning support of global warming.

Dr. Giaever wrote to Kirby of APS: “Thank you for your letter inquiring about my membership. I did not renew it because I cannot live with the (APS) statement below (on global warming): APS: ‘The evidence is incontrovertible: Global warming is occurring. If no mitigating actions are taken, significant disruptions in the Earth’s physical and ecological systems, social systems, security and human health are likely to occur. We must reduce emissions of greenhouse gases beginning now.’

Giaever announced his resignation from APS was due to the group’s belief in man-made global warming fears. Giaever explained in his email to APS: “In the APS it is ok to discuss whether the mass of the proton changes over time and how a multi-universe behaves, but the evidence of global warming is incontrovertible? The claim (how can you measure the average temperature of the whole earth for a whole year?) is that the temperature has changed from ~288.0 to ~288.8 degree Kelvin in about 150 years, which (if true) means to me is that the temperature has been amazingly stable, and both human health and happiness have definitely improved in this ‘warming’ period.” [emphasis in original]

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Senate reinserts money for the James Webb Space Telescope

10:38 pm

The Senate has reinstated money for completing the James Webb Space Telescope.

The allocation in today’s markup does not automatically mean that the Webb telescope has been rescued. The markup will now go to the full appropriations committee for approval before going to the Senate floor for a vote. The approved bill will then have to be reconciled with the House version, which, NASA hopes, will result in a final appropriation that keeps the telescope alive.

The House version also zeroed out funding for Webb, so reconciling the two budgets will not be easy.

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Washington staffers fear pay cuts, layoffs, loss of perks

11:36 am

Well ain’t that a shame: Washington political staffers fear pay cuts, layoffs, and loss of perks. Some precious quotes:

“Salaries are essentially frozen and in some cases going down,” said one former senior House Democratic aide, who recently left the Hill. “That makes it very hard for some people to stay on the Hill and just promotes a culture of underappreciation.”

and

Many chiefs of staff have started with small office perks: water jugs, sodas and orange juice. One Republican lawmaker told POLITICO that aides now take up a collection because the office can’t afford coffee.

What prigs. The rest of the country is experiencing the highest unemployment and lowest income in decades, and they’re unhappy they don’t have a water cooler or coffee machine.

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September 11 memorial says nothing about what happened on September 11

9:16 am

A September 11 memorial in New Jersey says nothing about what happened on September 11.

The stone reads, “Dedicated September 11, 2011/10 year anniversary,” followed by the names of the current township mayor, committee members and administrator. The marker does not mention the terrorists’ nearly 3,000 victims, the attacks that cost their lives or the origins of the steel. “I mean, how freaking narcissistic can you be?” [retired Police Officer Dennis] Ryan said Tuesday.

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Astronomers take one last close look at 1999 RQ36 before sending mission there

9:05 am

Astronomers plan one last close look at 1,900-foot-wide asteroid before sending a space probe there to collect samples.

Discovered in 1999, the OSIRIS-REx target asteroid, designated 1999 RQ36, nears Earth once every six years. During the 2011 closest approach in early September, it will be 10.9 million miles (17.5 million kilometers) away. In 1999, closest approach was 1.4 million miles (2.3 million kilometers).

Strangely, the article above never mentions the fact that 1999 RQ36 has 1 in a 1000 chance of hitting the Earth in 2182, which to my mind is the primary reason for studying it.

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One man’s 9/11 idea to rescue people from high-rise buildings

5:33 pm

One man’s 9/11 idea to rescue people from high-rise buildings.

It involves attaching a harness around your body. Attached to the harness is a Kevlar rope that is secured at one end to a radiator or pipe. You then pop out of a window and rappel down the face of the building using a device which controls the rate of descent at 6 feet per second. Think of it as a fishing reel with a human attached.

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How the Palestinian Authority trains children to hate

9:15 am

How the Palestinian Authority trains children to hate:

Classroom incitement has been thoroughly documented as has hate-teach and hate-preach on PA TV and radio, where Jews and Israelis are represented as demonic figures; and the need to wipe Israel off the map is a frequent theme in the eulogies of suicide bombers, martyrs whose deaths in terror attacks intending mass murder endear them to Allah. The goal seems to be to create a seething, raging population of young people far more interested in wiping Israel off the earth’s face than in achieving peaceful coexistence.

And they do not wait until the children start school. Palestinian Authority and Hamas preschool television and radio programming could be called Terrorism for Tots; and such programming continues well into high school. A Hamas weekly program starred a Palestinian version of Mickey Mouse, Farfur, who tells children to pray until there is “world leadership under Islamic leadership” and in the meantime to oppose the “oppressive invading Zionist occupation.” Farfar is ultimately beaten to death by an enraged Israeli “settler,” and is replaced by an intrepid young bee who buzzes the same message to the preschool viewers. Similar messages are encouraged in the classroom with supplementary material and teacher-guided self-expression that encourage martyrdom and glorify terrorism and terrorists.

Read the whole thing. As the author notes, “Can a government so filled with hate and bigotry that they crucify their own children on the cross of jihad and Jew-hatred realistically be expected to develop a nation that will work toward peace?”

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