Related topics: nasa · spacecraft · solar system · earth · asteroid

Three exocomets discovered around the star Beta Pictoris

Just about a year after the launch of the NASA mission TESS, the first three comets orbiting the nearby star Beta Pictoris outside our solar system were discovered with data from the space telescope. The main goal of TESS ...

Image: New comet viewer

From a distance of five million kilometres to within 20 metres, ESA's Rosetta spacecraft captured images of Comet 67P/Churyumov-Gerasimenko from all angles.

Rosetta's comet sculpted by stress

Feeling stressed? You're not alone. ESA's Rosetta mission has revealed that geological stress arising from the shape of Comet 67P/Churyumov–Gerasimenko has been a key process in sculpting the comet's surface and interior ...

Scientist sheds light on Titan's mysterious atmosphere

A new Southwest Research Institute study tackles one of the greatest mysteries about Titan, one of Saturn's moons: the origin of its thick, nitrogen-rich atmosphere. The study posits that one key to Titan's mysterious atmosphere ...

Image: Jupiter-family comet 46P Wirtanen

The ghostly green glow at the very top of this image reveals the presence of 46P Wirtanen – a relatively small comet with an estimated diameter of 1.2 kilometers. Had the path of history taken a different course, we would ...

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Comet

A comet is a Small Solar System Body that orbits the Sun. When close enough to the Sun, a comet exhibits a visible coma (fuzzy "atmosphere"), and sometimes a tail, both because of the effects of solar radiation upon the comet's nucleus. Comet nuclei are themselves loose collections of ice, dust and small rocky particles, ranging from a few kilometers to tens of kilometers across.

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