Narrator: Further from the Sun, in the outer reaches of the solar system, we find the gas planets. Much larger than the rocky planets, these cosmic giants are accompanied by numerous moons.

WASP-121b is an "ultra-hot Jupiter," a class of large gas planets that orbit close to their host star, making them extremely hot. Its atmosphere is mainly composed of hydrogen and helium ...

The Protoplanetary Disk and Planet Formation Approximately 4.6 billion years ago, our solar system originated from a vast cloud of gas and dust known as the solar nebula. As this nebula collapsed ...

WASP-121b is an "ultra-hot Jupiter," a class of large gas planets that orbit close to their host star, making them extremely hot. Its atmosphere is mainly composed of hydrogen and helium ...

WASP-121b is an “ultra-hot Jupiter,” a class of large gas planets that orbit close to their host star, making them extremely hot. Its atmosphere is mainly composed of hydrogen and helium ...

It could be argued that one of the most perplexing aspects of our solar system is the fact that not every planet is a nice, solid rock like Earth. Some are literally, almost entirely, made of gas.

WASHINGTON, D.C. - Astronomers for the first time have deciphered the three-dimensional structure of the atmosphere of a planet beyond our solar system, revealing three layers like a wedding cake on a ...