There are three types
of planets in our solar system. On the one hand we have rocky worlds like Earth
and Mars have a solid surface on which to put your feet and consist of 'rocks'
(silicates and metals). Then there are gas giants like Jupiter and Saturn, composed
mainly of hydrogen and helium (and actually should be called "Giant
fluid" because most of its interior hydrogen is a liquid or metallic).
Finally we have the ice giants,
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Wednesday, February 13, 2013
Monday, February 4, 2013
Asteroid 2012 DA14 will touch the Earth
15 February 2012 DA14
small asteroid will pass so close to Earth that will be inside the ring of
Geostationary weather satellites and communications satellites. NASA claims
that the observations that are exactly expect the trajectory of near-Earth
objects and the probability of collision exists. But the unique opportunity to
study the asteroid.
Sunday, February 3, 2013
Light from the dark cloud
ESO shows a dark cloud
in which new stars are formed straight, while a collection of bright stars, who
have left their dusty nursery already.
While on the left side
of the new recording sees a dark, elongated structure resembling a cloud of
smoke on the right side, a small group of bright stars lit the scene. At first
glance, the two parts of the image not to be contradictory, but in reality they
are closely linked.
Fire in the dark clouds
The Atacama Pathfinder
Experiment (APEX) in Chile offers a beautiful view of clouds of cosmic dust in
the group Orion. In observable light, this dense interstellar cloud appears
dark and solid. The LABOCA camera on APEX, however, can detect the heat
radiation emitted by dust and so do the hideouts of the just emerging star
locate. One of these dark clouds is not what it seems.
Dense clouds of cosmic
gas and dust in space are the birthplaces of new stars. In visible light, the
dust appears dark and opaque so that it hides the stars behind.
Saturday, February 2, 2013
The largest-ever solar boat
American scientist’s
Agency NASA makes known plans to launch in 2014, the year of the largest in the
history of the solar sail. Sail area of 1.2 thousand square meters. The name of
this project served as a famous story by Arthur C. Clarke of 1964 Sun jammier,
which refers to the regatta "solar boat". Side length of the sail is
almost 38 meters high, and it will produce L" Grade - the company that in
the late twentieth century sent experimental" inflatable "antenna on
the ISS.
Make stars are born
Astronomers have
calculated that the birth of planets around young stars can occur even at a
later stage than previously considered. In the study of the properties of star
TW Hydra found strong evidence. This star is at a distance of 176 light-years
from Earth, refers to the spectral type K8 and attracts the surrounding gas and
dust astronomers drive. A few years ago, close to the TW Hydra was discovered
planet, which weighs slightly larger than Jupiter.
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