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NASA Revises Time for Space Station Crew News Conference

September 1, 2011 Leave a comment

NASA has revised the time for a news conference on Tuesday, Sept. 6, with the two agency astronauts aboard the International Space Station. The briefing, broadcast live on NASA Television, will begin at 9:30 a.m. CDT.

Full Story: http://www.nasa.gov/home/hqnews/2011/aug/HQ_M11-182_ISS_News.html

The Star That Should Not Exist

September 1, 2011 Leave a comment

A star that should not exist

Image Credit: ESO/Digitized Sky Survey 2

A team of European astronomers has used ESO’s Very Large Telescope (VLT) to track down a star in the Milky Way that many thought was impossible. They discovered that this star is composed almost entirely of hydrogen and helium, with only remarkably small amounts of other chemical elements in it. This intriguing composition places it in the “forbidden zone” of a widely accepted theory of star formation, meaning that it should never have come into existence in the first place. The results will appear in the 1 September 2011 issue of the journal Nature.

A faint star in the constellation of Leo (The Lion), called SDSS J102915+172927, has been found to have the lowest amount of elements heavier than helium (what astronomers call “metals”) of all stars yet studied. It has a mass smaller than that of the Sun and is probably more than 13 billion years old.

Full Story: http://www.eso.org/public/news/eso1132/