Astronomy Picture of the Day
Discover the cosmos!
Each day a different image or photograph of our fascinating universe is
featured, along with a brief explanation written by a professional astronomer.
2014 August 7
Rosetta's Rendezvous
Image Credit:
ESA /
Rosetta / MPS for
OSIRIS Team;
MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Explanation:
On August 3rd, the Rosetta spacecraft's narrow angle camera captured
this stunning image of the nucleus of Comet
67P/Churyumov-Gerasimenko.
After 10 years and 6.5 billion kilometers of travel
along gravity assist trajectories
looping through
interplanetary space, Rosetta had approached to within
285 kilometers of its target.
The
curious
double-lobed shape of the nucleus is
revealed in amazing detail
at an image resolution of 5.3 meters per pixel.
About 4 kilometers across, the comet nucleus
is presently just over 400 million kilometers from Earth,
between the orbits of Jupiter and Mars.
Now the first spacecraft
to achieve a
delicate
orbit around a comet,
Rosetta will swing to within 50 kilometers and closer in the coming
weeks, identifiying candidate sites for landing its probe
Philae later this year.
Tomorrow's picture: island universe
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Authors & editors:
Robert Nemiroff
(
MTU) &
Jerry Bonnell (
UMCP)
NASA Official: Phillip Newman
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