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Posted by Julia
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Българин откри най-голямата планета, известна досега
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source
< A computer-generated simulation of TrES-4, with its host star on the right. The planet's home star is bigger and hotter than the Sun, and is about ten times larger than the planet. Astronomers speculate that the large size and low density of TrES-4 may cause a small fraction of its outer atmosphere to escape from the planet’s gravitational pull and form an envelope, or a comet-like tail around the planet. Credit: Jeffrey Hall, Lowell Observatory.
The new planet was identified by astronomers looking for transiting planets – that is, planets that pass in front of their home star – using a network of small automated telescopes in Arizona, California, and the Canary Islands. TrES-4 was discovered less than half a degree (about the size of the full Moon) from the team’s third planet, TrES-3.
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Posted by chshkt
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Source: Times Online
Lewis Smith
SPACE Close-up images of one of Saturn’s moons have revealed an
extraordinary landscape that looks like a giant sponge. Hyperion, Saturn’s
eighth-largest moon, was pictured from 384 miles (620km) away by the Cassini
spacecraft.
Its appearance was “unlike that of any other object imaged to date”,
researchers reported in the journal Nature.
The moon, which contains large quantities of ice, was calculated to have an
average diametre of 168 miles but its irregular shape meant that this ranged
from 118 to 226 miles. Its appearance was created by a high density of
craters.
Source: Times Online
More: HemuZ Space
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