News & Events

Sunwheel marks new season

Friday, March 21, 2008

They were calendars before there were calendars. To the uninitiated, sunwheels are probably a complete mystery, but to ancient farmers these assemblages of stones (think Stonehenge) were needed to know when to plant or harvest crops. (www.masslive.com/hampfrank/republican.)

New Hydrogen Clouds in the M81 Group of Galaxies

Thursday, January 10, 2008

A composite radio-optical image shows five new clouds of hydrogen gas discovered using the National Science Foundation's Robert C. Byrd Green Bank Telescope (GBT). The spiral galaxy M81 and its satellite, M82, are seen in visible light (white); intergalactic hydrogen gas revealed by the GBT is shown in red; and additional hydrogen gas earlier detected by the Very Large Array is shown in green. (www.nrao.edu/pr/2008/m81clouds)

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