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Archive for the ‘Astronomy’ Category

Astronomers call for X-ray polarimeter

November 25, 2013 Leave a comment

Polarimeters have been passed over, canceled or descoped numerous times since polarized X-rays were first seen coming from the Crab Nebula in the 1970s; maybe the next NASA Small Explorer mission opportunity will give astronomers a chance to fly one.

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NASA cancels plutonium-efficient power program

November 19, 2013 Leave a comment

The Advanced Stirling Radioisotope Generators (ASRGs), which would have been ideal for powering planetary missions to the Outer Solar System, were being built by the US Department of Energy, but NASA has pulled the plug on the project, which my article reveals suffered from technical issues and management problems.

Astronomers revisit dwarf stars’ promise

October 31, 2013 Leave a comment

Data from the Kepler space telescope suggest it may be fruitful to search for life around cool, dwarf stars: article in Nature.

Experiment weighs in on dark matter controversy

October 25, 2013 Leave a comment

The Large Underground Xenon experiment, at Sanford Underground Laboratory in South Dakota, is close to releasing its first results. See also my earlier blog post.

Fake data to help dark energy quest

October 25, 2013 Leave a comment

How fast do black holes spin?

August 7, 2013 Leave a comment

Astronomers have measurements of the rotation rate of more than 20 supermassive black holes. Here’s a report on one more.

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Gamma-ray fans go back to Earth

June 20, 2013 Leave a comment

Check out ambitious plans for the Cherenkov Telescope Array, the next generation high-energy gamma ray telescope @NatureNews.