Ok. Essa foi bizarra.
Com o que um Gelo X deve se parecer?
http://www.estadao.com.br/ciencia/noticias/2007/mai/16/320.htm disse:Um grupo de cientistas de um observatório suíço informou nesta quarta-feira, 16, que detectou o primeiro planeta de gelo conhecido até agora, que tem as dimensões de Netuno e fica fora do sistema solar, a 30 anos-luz da Terra.
O exoplaneta, como os astrônomos definem os planetas que não fazem parte do Sistema Solar, é composto de água sob a forma de gelo quente, estado físico que não existe na Terra, assinalou o observatório de Saint-Luc, situado em Anniviers, por meio de uma nota à imprensa.
Pela proximidade com sua estrela, os especialistas calculam que a temperatura da superfície do astro é de 300°C, por isso que a água de sua atmosfera está no estado de vapor e, no interior, em forma de gelo quente.
http://www.space.com/scienceastronomy/070516_hotice_planet.html disse:A Neptune-sized world in a distant solar system orbits very close to its star and might be covered with exotic forms of water not naturally found on Earth, scientists say.
The bizarre world is being called a "hot ice planet."
First discovered in 2004, the planet, called GJ 436 b, is about 22 times more massive than Earth. It orbits a diminutive red dwarf star 30 light-years away from us.
Based on its size and mass, scientists think the planet is composed mostly of water.
GJ 436 b orbits its star from a distance of only about 2.5 million miles (4 million km) - about 14 times closer than Mercury's average distance from the Sun. At such close quarters, scientists think its surface temperature is at least 600 degrees Fahrenheit (300 C) and any water on its atmosphere would be in the form of steam.
Water on the surface of the planet is a different matter, scientists say. The pressures on GJ 436 b are so great that water would adopt forms not found anywhere on Earth except in laboratories.
"Water has more than a dozen solid states, only one of which is our familiar ice," said study team member Frederic Pont of the University of Geneva in Switzerland.
In the same way that carbon can transform into diamonds under extreme pressures, water turns into other solid states denser than both liquid and ice under very high pressures. Physicists call these alternative forms of water Ice VII and Ice X.
Com o que um Gelo X deve se parecer?