Sentences with phrase «gaseous planet known»

Not exact matches

Until then, all the known exoplanets (planets circling other stars) were big and gaseous, but this one is probably made of rocky materials — the first world like ours found in an alien solar system.

Kepler - 296f is twice the size of Earth, but scientists do not know whether the planet is a gaseous world, with a thick hydrogen - helium envelope, or it is a water world surrounded by a deep ocean.

The two planets are members of a large class of extrasolar planets known as «hot Jupiters» because they are gaseous like Jupiter but orbit closely to their stars, giving them high temperatures of 1,000 to 2,000 kelvins.

By knowing or closely estimating a planet's density, the scientists were able to gain an insight as to whether the planet is gaseous or rocky.

Furthermore, by knowing the mass of a planet from radial velocity measurements and the radius of a planet based on how much starlight it blocked, it is a simple calculation to determine a planet's density, which can tell astronomers whether that planet is rocky or gaseous in nature, or whether it has a small core and a thick atmosphere, or whether it has a large core covered in deep oceans.

We know that planets form within protoplanetary disks that orbit young stars, and gas giants need to be fully formed within 3 - 10 million years of the formation of their parent star as the gaseous nebula dissipates past this point.

So, now we know that the more active sun warms the planet directly with increased incident radiation and indirectly both by reducing low cloud and likely by elevating the proportion of gaseous water — the most important greenhouse gas.

It therefore seems likely that exotic cases of highly eccentric orbits may be prominent in other solar systems, where various gaseous planets are known to exhibit large orbital fluctuations.