It will study the clouds of gas and dust that go into making stars and planets.
It is obscured by vast clouds of gas and dust in the constellation of Sagittarius.
This technology has allowed Herschel to study the processes at play as large clouds of gas and dust collapse to form new stars.
The first stars formed when clouds of gas bunched together due not only to the pull of their own gravity, but also that of dark matter.
Stars are the result of the gravitational collapse of huge clouds of gas and dust, whereas planets are thought to evolve by the accretion of the material left over from such collapses, which forms a rotating disc around the newly created star.
At first glance, it might seem obvious that it was through the action of flowing water (fluvial), but the Curiosity team needs to rule out the possibility that these rocks were deposited by the wind (aeolian) or by some kind of surge, such as the fast-moving clouds of gas and rock that will often plummet down the sides of particular types of volcano (a pyroclastic surge).
These are clouds of superheated gas rising above the Sun's surface, each of them larger than the Earth.
Large-scale structures are also visible, such as large clouds of dust and gas where stars are forming at rapid rates.
Many of his French colleagues found him too much: noisy, mischievous, attached to no school (though he had sat at the feet of both Henri Lefebvre and Roland Barthes in his feverish years at Nanterre, when teaching had been interrupted by clouds of tear-gas and cobblestone-throwing).
Gas clouds in the middle of the galaxy are, everyone agrees, partly ionised: radiation flying through has battered electrons off some of the atoms in the gas.
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