Showing posts with label Smith's Cloud. Show all posts
Showing posts with label Smith's Cloud. Show all posts

Sunday, March 27, 2011

The Mystery of the Million-mass Smith’s Cloud

The beginning

Gail Bieger-Smith is a 69 old woman who lives a quiet life in Wassenaar, a small, wealthy town west of Leiden, the Netherlands. She never expected to be dragged again by her brief astronomy career 45 years ago, but in early January she started getting phone calls from reporters and radio astronomers. The extragalactic cloud she discovered in 1963 had been found to be on a collision course with our Milky Way Galaxy. Some 20 to 40 million years from now, a million Suns' worth of hydrogen gas will smash into the galactic plane, likely causing a huge burst of star formation in the Perseus Arm about a quarter of the way around the galaxy from us. Long forgotten, Smith's Cloud was suddenly headline news.