Wednesday, April 20, 2011

Space news

''Pluto's Atmosphere Found Poisonous...
A British-based team of astronomers, led by Jane Greaves of the University of St. Andrews in Scotland, found a strong signal of carbon monoxide gas in Pluto's atmosphere using the 15-meter James Clerk Maxwell Telescope in Hawaii.
The atmosphere of Pluto was known to extend more than 60 miles (about 100 kilometers) above the surface, the researchers said, but the new findings raise that height to more than 1,860 miles (3,000 km) — equivalent to a quarter of the distance out to Pluto's largest moon, Charon.
'' [source]
''Worlds With Two Suns May Sport Black Plants.
A new study finds that, to maximize energy absorption for photosynthesis, the flora on worlds that orbit two suns may have evolved to use one or more types of light-absorbing pigments that absorb across a broad range of wavelengths, which would tend to make the plant appear black or gray.
'' [source]

''Solar Activity Heats Up.
Back in 2008, the solar cycle plunged into the deepest minimum in nearly a century. Sunspots all but vanished, solar flares subsided, and the sun was eerily quiet.
"Ever since, we've been waiting for solar activity to pick up," says Richard Fisher, head of the Heliophysics Division at NASA Headquarters in Washington DC. "It's been three long years."
Quiet spells on the sun are nothing new. They come along every 11 years or so—it's a natural part of the solar cycle. This particular solar minimum, however, was lasting longer than usual, prompting some researchers to wonder if it would ever end.
'' [source]

No comments:

Post a Comment