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Astronomy Picture of the Day
Ceres: Asteroid or Planet?
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zorg.ch
#91788
by
[z]Barbara Harris
@
22.08.2006 00:00
- nach oben -
Ceres: Asteroid or Planet?
Explanation:
Is
Ceres
an
asteroid
or a planet?
Although a trivial designation to some, the recent suggestion by the
Planet Definition Committee
of the
International Astronomical Union
would have Ceres reclassified from asteroid to planet.
A change in taxonomy might lead to more notoriety for the frequently overlooked world.
Ceres
,
at about 1000 kilometers across, is the largest object in the
main asteroid belt
between Mars and Jupiter.
Under the
newly proposed criteria
, Ceres would qualify as a planet because it is nearly
spherical and sufficiently distant from other planets.
Pictured above
is the best picture yet of Ceres, taken by the
Hubble Space Telescope
as part of a series of exposures ending in 2004 January.
Currently, NASA's
Dawn mission
is scheduled to launch in 2007 June to explore
Ceres and
Vesta
,
regardless of their future designations.
Credit & Copyright
zorg.ch
#91792
by
Squeezer
@
22.08.2006 08:18
- nach oben -
the best picture... es isch 30pixel breit