Showing posts with label National Geographic. Show all posts
Showing posts with label National Geographic. Show all posts
Thursday, January 25, 2018
Clementine (DSPSE) launched 1994
Clementine (official name: Deep Space Program Science Experiment), launched January 25, 1994, was a joint project between the Ballistic Missile Defense Organization and NASA. Its mission was to study the moon and a near-Earth asteroid 1620 Geographos.
The lunar mapping portion of the mission lasted about 2 months and was successfully completed. However, when it left lunar orbit, a computer glitch caused a thruster to fire until all of its fuel had been spent and left Clementine spinning out of control. The near-Earth asteroid section of the mission had to be abandoned.
1620 Geographos was discovered September 14, 1951, by Albert George Wilson and Rudolph Minkowski. It was named in honor of the National Geographic Society. It made its closest approach to Earth in 1994 (hence the timing of the mission) but won't come as close until 2586.
Wednesday, January 11, 2017
The Golden Frog: extinct- Global Warming casualty
Global warming claims another victim: the golden frog (or toad). Last seen in 1989, this small amphibian lived in the mountaintop cloud forests but have been declared extinct due to drought caused by global warming, reports National Geographic. The deadly fungus chytrid fungus, which has been allowed to propogate because of climate changes, is responsible for countless amphibians.
The golden toad is just one of those species to help keep insect populations in check, such as mosquitos. Without them, mosquitos could flourish spreading deadly diseases. Also, animals who feed on the frogs will disappear.
http://news.nationalgeographic.com/news/2014/03/140331-global-warming-climate-change-ipcc-animals-science-environment/
Labels:
extinct,
global warming,
golden toad,
National Geographic
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