What's New in Lunar & Planetary Science
spacecraft ended its mission as planned with an impact on the surface of Mercury
April 30 at 19:26 UT (3:26 p.m. EDT). The estimated impact position was 54.4 N, 210.1 E. A
was returned shortly before the impact.
For more details on the end of the mission, see the
MESSENGER News Release.
A study of Ganymede's aurorae using the Hubble Space Telecope has provided the
best evidence yet for a subsurface saltwater ocean on Jupiter's
largest moon, possibly as thick as 100 km, below a 150 km thick crust. For more, see the
NASA Press Release.
spacecraft entered orbit around the largest asteroid, Ceres,
at 12:29 UT (7:39 a.m. EST) Friday, March 6
and achieved its
13,500 km circular first science orbit on April 23. It will
now work its way down to the nominal 380 km science orbit.
- President John F. Kennedy makes speech before Congress urging the U.S. fly a man to the Moon.
- Launch of Skylab Apollo CSM 1, bringing first crew to the Skylab space station.
- Phoenix lander touches down on the northern plains of Mars.
- Mars Rover "Spirit" mission ends after final attempt at communication is unsuccessful.
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