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TRAPPIST-1 Planets Probably Rich in Water

By Richard Hook | ESO on Feb 6, 2018   Featured, Science/Education  

TRAPPIST-1 Planets Probably Rich in Water

A new study has found that the seven planets orbiting the nearby ultra-cool dwarf star TRAPPIST-1 are all made mostly of rock, and some could potentially hold more water than Earth. The planets’ densities, now known much more precisely than before, suggest that some of them could have up to 5 percent of their mass […]

Closest Temperate World Orbiting Quiet Star Discovered

By Richard Hook | ESO on Nov 15, 2017   Science/Education  

Closest Temperate World Orbiting Quiet Star Discovered

A team working with ESO’s High Accuracy Radial velocity Planet Searcher (HARPS) at the La Silla Observatory in Chile has found that the red dwarf star Ross 128 is orbited by a low-mass exoplanet every 9.9 days. This Earth-sized world is expected to be temperate, with a surface temperature that may also be close to […]

Sculpting Solar Systems

By Richard Hook | ESO on Nov 10, 2016   Featured, Science/Education  

Sculpting Solar Systems

  Three teams of astronomers have made use of SPHERE, an advanced exoplanet-hunting instrument on the Very Large Telescope (VLT) at ESO’s Paranal Observatory, in order to shed light on the enigmatic evolution of fledgling planetary systems. The explosion in the number of known exoplanets in recent years has made the study of them one […]

Jupiter Awaits Arrival of Juno

By Richard Hook | ESO on Jun 27, 2016   Featured, Science/Education  

Jupiter Awaits Arrival of Juno

In preparation for the imminent arrival of NASA’s Juno spacecraft, astronomers have used ESO’s Very Large Telescope to obtain spectacular new infrared images of Jupiter. They are part of a campaign to create high-resolution maps of the giant planet. These observations will inform the work to be undertaken by Juno over the coming months, helping […]

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