Astronomers of the
National Aeronautics and Space
Administration or NASA, re-detect
any Earth-sized planets around stars similar to
our sun outside the
solar system. Planets found outside
our solar system that is consider
rocky and called
the Kepler-20e and Kepler-20F, is the smallest planet.
For Kepler-20e
has a size of 0.87
times the radius of
the earth, and slightly smaller
than the planet Venus.
As for the Kepler-20F
has a size of 1.03
times the radius of
the earth, and slightly larger
than the planet Earth.
"This discovery demonstrates for the first time
that Earth-size planets exist around other stars, and that we are able
to detect them," Francois Fressin of the Harvard-Smithsonian Center for
Astrophysics in Cambridge, Massachusetts, said in the statement.
At position 800 degrees
Fahrenheit, Kepler-20F looks similar to that
found on the planet Mercury. Kepler-20F
can reach a state of the surface temperature is about more than 1,400 degrees
Fahrenheit, and can
melt the glass on
such temperature conditions.
At this temperature condition, it is not possible
to support the existence of a
life, unless the
planets close to their star and are in the so-called habitable zone where there is water
around the surface of planets
with space telescopes.
NASA can see
and detect the planets outside space by
measuring brightness dips in 150,000 planets that
pass in front of their stars. there are many more undiscovered planets, and Nasa will still continue to detect planets that are in outer space.