Year: 2015

Dance of the stars

8:51 am

Astronomers have found a stellar system made up of five stars, two binary systems orbiting each other, with a fifth star orbiting one of the stars in one of the binaries.

Co-author Dr Markus Lohr, from the Open University, told BBC News that these contact binaries were stars that orbit so closely they share an outer atmosphere. The other star pair – a detached binary – has a separation distance of some three million km. The two binaries orbit in the same plane at a distance of 21 billion km.

Follow-up observations of different wavelengths of light coming from the star system uncovered a fifth star, which is linked to the detached binary star. “This is a truly exotic star system. In principle there’s no reason why it couldn’t have planets in orbit around each of the pairs of stars. Any inhabitants would have a sky that would put the makers of Star Wars to shame,” Dr. Lohr said. “There could sometimes be no fewer than five Suns of different brightnesses lighting up the landscape.”

Dr. Lohr is being a bit extravagant. Though planets are a possibility here, I suspect it very unlikely that they are habitable.

0 comments

A New Horizons map of Pluto

11:54 pm

New Horizons map of Pluto

Cool image time! The New Horizons science team today released their best global map of Pluto, as seen so far.

The center of the map shows the area that New Horizons will see close-up during the fly-by.

The elongated dark area informally known as “the whale,” along the equator on the left side of the map, is one of the darkest regions visible to New Horizons. It measures some 1,860 miles (3,000 kilometers) in length. Directly to the right of the whale’s “snout” is the brightest region visible on the planet, which is roughly 990 miles (1,600 kilometers) across. This may be a region where relatively fresh deposits of frost—perhaps including frozen methane, nitrogen and/or carbon monoxide—form a bright coating.

Continuing to the right, along the equator, we see the four mysterious dark spots that have so intrigued the world, each of which is hundreds of miles across. Meanwhile, the whale’s “tail,” at the left end of the dark feature, cradles a bright donut-shaped feature about 200 miles (350 kilometers) across. At first glance it resembles circular features seen elsewhere in the solar system, from impact craters to volcanoes. But scientists are holding off on making any interpretation of this and other features on Pluto until more detailed images are in hand.

Some of these features will not be resolved much clearer than this, as Pluto’s day is six Earth days long, and will thus not be visible any longer to the spacecraft during its last week approach. In addition, much of the southern hemisphere will also not be imaged at all, as the planet’s inclination puts much of that hemisphere out of view entirely.

Nonetheless, we will see a great deal that has never been seen before. Stay tuned!

1 comment

Musk makes first extended public comments since Falcon 9 failure

11:43 pm

In the heat of competition: Elon Musk on Tuesday made his first detailed public comments about the Falcon 9 accident, the on-going investigation, and the aftermath.

Musk hopes to release more details on the failure by the end of this week after further data analysis and engineering reviews. “At this point, the only thing that’s really clear was there was some kind of over-pressure event in the upper stage liquid oxygen tank, but the exact cause and sequence of events, there’s still no clear theory that fits with all the data,” Musk said. “So we have to determine if some of the data is a measurement error of some kind, or if there’s actually a theory that matches what appear to be conflicting data points.”

He also had no word on when launches would resume.

0 comments

New Horizons team proposes cool names for Charon and Pluto features

11:39 pm

In anticipation of their discovering many previously unseen features on both Pluto and Charon, the New Horizons science team released today a proposed list of names, including “Kirk”, “Spock”, and many other fictional science fiction characters.

Many of these suggestions were proposed by the public. Personally, I prefer the part of their proposal where they suggest naming features after real people, like Lewis Carroll and Arthur Clarke.

0 comments

Brainstorm – the world’s smartest mouse

6:01 pm

An evening pause: You might say this a variation on a Rube Goldberg device, except that instead of gravity running the show it is a mouse.

Hat tip Phill Oltmann.

Readers: I am always looking for tips for my evening pauses. If you see a video you think might fit, make a comment here mentioning that you have something, but don’t post the link. I will email you to get it from you.

3 comments

IRS defies judge’s court order in Lerner email scandal

4:42 pm

Contempt for the law: The IRS and the Obama administration today directly defied the ruling of a federal judge, who — faced with their stonewalling — had ordered them to release 1800 Lois Lerner emails to the court each Monday.

It appears to me that the IRS and the Obama administration are doing whatever they can to obstruct this investigation and to prevent these emails from ever being seen by the public. This also strongly suggests that there are some real bombshells in those emails, including evidence that there was a blatent effort by the White House, the IRS, and Democratic members of Congress to use the IRS to harass and destroy their political opponents.

I am waiting for this judge to finally show some real backbone and declare several Obama and IRS officials in direct contempt of the court and then have them arrested and imprisoned. Until he does, the Obama administration is going to continue to thumb its nose at him, and the law.

4 comments

The IRS and Obama administration planned to criminally prosecute its opponents

11:16 am

Working for the Democratic Party: New Justice Department documents released today show that in 2010 the Obama administration and the IRS were conspiring to criminally prosecute opponents of the Obama administration.

Judicial Watch today released new Department of Justice (DOJ) and Internal Revenue Service (IRS) documents that include an official “DOJ Recap” report detailing an October 2010 meeting between Lois Lerner, DOJ officials and the FBI to plan for the possible criminal prosecution of targeted nonprofit organizations for alleged illegal political activity.

The newly obtained records also reveal that the Obama DOJ wanted IRS employees who were going to testify to Congress to turn over documents to the DOJ before giving them to Congress. Records also detail how the Obama IRS gave the FBI 21 computer disks, containing 1.25 million pages of confidential IRS returns from 113,000 nonprofit social 501(c)(4) welfare groups – or nearly every 501(c)(4) in the United States – as part of its prosecution effort. According to a letter from then-House Oversight Committee Chairman Darrell Issa (R-CA) to IRS Commissioner John Koskinen, “This revelation likely means that the IRS – including possibly Lois Lerner – violated federal tax law by transmitting this information to the Justice Department.”

This bears repeating: It is illegal for the IRS to give the confidential tax returns of citizens to anyone, including the Justice Department. Worse, having done so the IRS has given the very partisan Obama administration a giant treasure-trove of data it can use to smear and destroy its opponents.

4 comments

Study finds electric cars more environmentally damaging than gas guzzlers

10:57 am

Surprise, surprise! A new study has found that in many cases electric cars actually do more damage to the environment that gasoline-run vehicles.

The study has a lot of uncertainties, and is based largely on statistical analysis, which I always find suspect. In addition:

The study’s biggest caveat, acknowledged by the researchers, is that they don’t consider a full “lifecycle” analysis of emissions—so things like making the car, drilling for oil, or transporting coal aren’t included in the environmental costs. Some previous work has found that EVs are cleaner than gas cars when you consider the totality of impacts; others have found that’s only true if the power grids that charge EVs are also clean.

Notice how they also don’t mention any of the environmental costs for making the batteries and components of an electric car. I wonder why.

Nonetheless, this study illustrates again why we should never rely on the opinions of politicians in these matters. They know less than nothing, and always base their policy on raw, simplistic emotions rather than complex knowledge. Better to let freedom, and the market decide. It always looks for the most efficient way of doing things, which in the end is always going to be better for the environment.

4 comments

Astronomers propose giant super Hubble replacement

9:52 am

A major university consortium that manages many ground- and space-based telescopes has proposed that a new giant optical space telescope be built to replace Hubble.

A report published today by the Association of Universities for Research in Astronomy in Washington, D.C., lays out the rationale for another orbiting observatory. It will have a mirror as big as 12 meters across, to both look for habitable planets around other stars and peer deep into the early aeons of the universe.

Hubble has a mirror 2.4 meters across, so this would be significantly larger. In fact, if built this new space telescope would make it bigger than any ground-based telescope that exists today.

As the article notes, the cost over-runs and delays of the infrared James Webb Space Telescope — which went from a $1 billion budget to $8 billion — will likely make Congress reluctant to fund a new giant project like this. Nonetheless, this report gives us a hint of where the astronomy community wants to head in future decades. For the past two decades they have poo-pooed the construction of a new and larger optical space telescope. It appears from this report that this culture is now changing.

0 comments

Great Britain space agency calls for an increased space effort

9:43 am

The competition heats up: The United Kingdom’s space agency has issued its proposed future strategy, focusing on a renewed involvement with ISS and the European Space Agency.

Following a public consultation and lengthy discussions across government, the new strategy, published today, concludes that continued involvement in the ISS and other programs via ESA membership is the best way to involve U.K. scientists and industry in human spaceflight. The document says the government will consider bilateral projects with other space agencies but fears always being the junior partner since the United Kingdom has no launchers or space stations. It does not think that the commercial launch industry is sufficiently mature for the United Kingdom to buy services commercially. The report also states: “The Agency will also consider its role in human exploration missions beyond Earth orbit, especially where this complements science and technology goals for robotic exploration.”

I wonder if the newly elected conservative British government agrees with this strategy. It appears to me that it was researched and written prior to the election.

1 comment
1 … 64 65 66 67 68 … 148