The water exoplanet orbits its dim star, a dwarf-red 300 times fainter than the Sun, every 38 hours, at a distance of 2 million kilometers, which allows you to calculate your room temperature in something close to 230 ° C - Credit : Nature / Charbonneau at al (2009).
Hubble Space Telescope discovered different type of extrasolar orb.
Smaller than Uranus and larger than the Earth, the exoplanet is a world not only covered, but mostly water, surrounded by a thick gaseous atmosphere. "The GJ 1214b is like no other planet we know. A huge fraction of its mass consists entirely of water, "said Zachory Berta of the Harvard-Smithsonian Center for Astrophysics.
The exoplanet GJ 1214b, considered a super-Earth, was discovered in 2009. In 2010, studies indicated that its atmosphere was composed mainly of water vapor. Now, more detailed studies , including a new observation with the Hubble telescope, helped rule out other possibilities, like a haze.
The dry mists are more transparent to infrared light than visible light. The Hubble observations helped establish the atmosphere of the exoplanet is consistent with water vapor.
But then came the news: the planet seems to be almost an exoplanet water. As the mass and the orb size were determined quite accurately, astronomers were able to calculate its density - only two grams per cubic centimeter. Water has a density of one gram per cubic centimeter, while the average density of the Earth is 5.5 grams per cubic centimeter. This suggests that GJ 1214b has much more water than Earth, much less rocks.
As a consequence, the internal structure of this exoplanet water should be extraordinarily different from the Earth. "The high temperatures and high pressures [inside the planet] should form exotic materials like 'hot ice' and 'superfluid water', substances that are completely alien to our daily experience, "Berta said.
The exoplanet water is located 40 light-years away from Earth in the constellation of Ophiuchus (or Serpent). It has 2.7 times Earth's diameter and weighs almost seven times. The GJ 1214b orbits its dim star, a dwarf-red 300 times fainter than the Sun, every 38 hours, at a distance of two million kilometers, which allows you to calculate your room temperature in something close to 230 ° C.
Credit: UFO Magazine