This Day In Astro History


RonaldNcNair
Ronald McNair - Space Hero

October 21


2003 - Eris, the largest dwarf planet, so far, in the Kupier Belt is discovered by Mike Brown (Caltech), Chad Trujillo (Gemini Observatory), and David Rabinowitz (Yale University). The revised paper is published in the December 10th 2005 issue of the Astrophysical Journal Letters.

1950 - Birthday, Ronald McNair - American Astronaut who flew on STS 41-B, He died as a crew member during the launch of Challenger, January 28, 1986, STS 51-L.

Every Year - Orionids (Orion): Midnight: Associated Comet Halley: Meteors per Hour 25

Three frames of animated images showing the movement of Eris on the day of discovery. Can you find moving Eris?
 
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It is my conclusion that human evolution and the motions of matter in space are intrinsically linked. The observation and understanding of the complexity of biological history on Earth cannot be complete without the tandem observation and understanding of a dynamic greater cosmos. - SpaceGene