History

Featured Images

Yerkes Observatory in Wisconsin is home to the world's largest refractor
 Still Going Thursday, August 18, 2011
Atlantis launches on the final space shuttle mission, July 8, 2011
 Last Call Friday, July 8, 2011
Alan Shepard enters his capsule, then launches aboard Freedom 7, May 5, 1961
 A-OK Flight Thursday, May 5, 2011
Moon and planets in the dawn sky, April 30/May 1, 2011
 Dawn Encounter Friday, April 29, 2011
Launches of Vostok 1, STS-1 (space shuttle Columbia)
 Double Date Tuesday, April 12, 2011
Streamers of dust partially obscure the "seven sisters," members of the Pleiades
 Veiled Sisters Wednesday, April 6, 2011
Mercury and Jupiter passing in the evening sky
 Just Passing By Sunday, March 13, 2011

Radio Programs

Glass Astronomy Astronomy-under-glass Tuesday, August 16, 2011
Star Travels A fanciful design for a starship Sunday, July 24, 2011
Celestial Equator An astronomical "Mason-Dixon Line" Sunday, June 19, 2011
Luis Alvarez Subatomic particles and dead dinosaurs Monday, June 13, 2011
Transit of 1761, Part IV A ring of fire around a planet Thursday, June 9, 2011
Transit of 1761, Part III Ducking cannonfire in the name of science Wednesday, June 8, 2011
Transit of 1761, Part II Dodging cannonfire in the name of science Tuesday, June 7, 2011
Transit of 1761 Spreading out to watch a little black dot Monday, June 6, 2011
More Moon and Venus A traffic jam in the dawn sky Saturday, April 30, 2011
Moon and Venus A close but far-away planet Friday, April 29, 2011
Space Day A double reason to celebrate Tuesday, April 12, 2011
Moon and Pleiades "Flashy" sisters in the evening sky Wednesday, April 6, 2011
April Springing into a beautiful month Friday, April 1, 2011
More Moon and Venus Naming ancient volcanic basins Wednesday, March 30, 2011
Moon and Venus Searching for an elusive moon Tuesday, March 29, 2011
Taking Inventory Taking inventory of the solar system Saturday, March 26, 2011
Mercury and Jupiter Big and small in the evening sky Monday, March 14, 2011
Shortest Year Birthdays by the basketful Sunday, March 13, 2011

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