Here are details about a :
Space commemorative cover
or Space Cover.
Cosmodrom : USA
Date of Cancellation: Nov. 14, 2003
Kind of Event : Launch
Launch pad : USA KSC (FL)
habité?/manned?: robot
Mission type : Deep Space
ou?/where?: au sol - ground
autographe?: non - noneDescription : 90377 Sedna is a large minor planet in the outer reaches of the Solar System that was, as of 2015, at a distance of about 86 astronomical units (AU) from the Sun, about three times as far as Neptune. Spectroscopy has revealed that Sedna’s surface composition is similar to that of some other trans-Neptunian objects, being largely a mixture of water, methane and nitrogen ices with tholins. Its surface is one of the reddest among Solar System objects. It is most likely a dwarf planet.
Astronomer Michael Brown, co-discoverer of Sedna and the dwarf planets Eris, Haumea, and Makemake, thinks that it is the most scientifically important trans-Neptunian object found to date, because understanding its unusual orbit is likely to yield valuable information about the origin and early evolution of the Solar System.
Pasadena post stamp. Keyword(s) :
#Deep space,
#NASA,
#Planet,
#Telescope, SPACE REVUE : 03 - 2005 Last modified: 09/22/2015 @ 11h12
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USA 2706 | 8,- |
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Page : future · Ref: USA 2706 Space Event : SEDNA 90377 (SMALL PLANET) · DISCOVERY
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