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The year 2009 in science involves some significant events.
2009 has been designated as the:
Events
- January 26 - Annular solar eclipse.
- February 23 - Comet Lulin, a non-periodic comet, makes its closest approach to Earth, peaking in brightness between magnitude +4 and magnitude +6.
- March 7 - the Kepler Mission has a successful launch.
- May 19 - Paleontologists announce the discovery of Darwinius masillae, a "missing link" with features similar to lemurs, monkeys, and humans.
- October 1 - paleontologists announce the discovery of an Ardipithecus ramidus fossil skeleton, deeming it the oldest fossil skeleton of a human ancestor.
Scheduled events
Scientific events scheduled to occur in the year 2009 include:
- February 1 - The International Cospas-Sarsat Satellite System is scheduled to stop monitoring for 121.5 MHz and 243 MHz (Class B) distress signals from EPIRBs and other emergency beacons.
- May 11–22 - STS-125, the last expected Space Shuttle mission to service the Hubble Space Telescope.
- July 22 - Total solar eclipse (longest lasting total eclipse of the 21st century).
- September 29 - NASA's MESSENGER spacecraft makes its final flyby of Mercury, decreasing velocity enough for an orbital capture in 2011.
Deaths
- February 11 - Willem Johan Kolff (b. 1911), physician, inventor of artificial organs.
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