rock and dust. Uranus and Neptune come next. Whilst unmanned spacecraft have approached the gas planets, actual landings are not possible because of the lack of solid surfaces. The gas planets are ...

The powerful Webb with its incredible sensitivity observed dust grains the size of bacteria, which will eventually coalesce ...

If everything in our solar system formed from the same solar nebula, why do the planets ... rock. They quickly became massive enough to also gravitationally trap gases such as hydrogen and helium from ...

Opinions expressed by Forbes Contributors are their own. I cover aerospace, astronomy & hosted The Cosmic Controversy Podcast. This artist’s concept shows what the exoplanet WASP-107 b could ...

Planets form in discs of gas and dust around young stars. While the gas component dominates the mass of the disc typically by a factor 100, the dust component is much easier to observe. By looking at ...

Every time a planet has been found orbiting its star that closely before, it has either been a huge gas giant, similar to Jupiter, or a barren tiny rock planet smaller than Earth. "We expect ...

It grew larger thanks to countless collisions between dust particles, asteroids, and other growing planets, including one last giant impact that threw enough rock, gas, and dust into space to form the ...

Planets are formed when dust and rock in a disk around a young star collide ... It all begins in a disk-shaped cloud of gas (99%) and dust (1%)—the protoplanetary disk. Here, dust particles ...

The planet Uranus has clouds made up of hydrogen sulphide, the gas that gives rotten eggs their unpleasant smell. The possibility of this gas being present in the atmosphere of the seventh planet ...