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CHEOPS - CHaracterising ExOPlanet Satellite - is the first mission dedicated to searching for exoplanetary transits by performing ultra-high precision photometry on bright stars already known to host planets. The mission's main science goals are to measure the bulk density of super-Earths and Neptunes orbiting bright stars and provide suitable targets for future in-depth characterisation studies of exoplanets in these mass and size ranges.

News

News

Switching on the CHEOPS instrument
10 January 2020

The science instrument on ESA's Characterising Exoplanet Satellite, CHEOPS, was successfully activated on 8 January, marking the beginning of the mission's in-orbit commissioning.

Liftoff for CHEOPS, ESA's exoplanet mission
18 December 2019

ESA's CHEOPS mission lifted off on a Soyuz-Fregat launcher from Europe's Spaceport in Kourou, French Guiana, at 09:54:20 CET on 18 December on its exciting mission to characterise planets orbiting stars other than the Sun.

Exoplanet and cosmology discoveries awarded Nobel Prize in Physics
8 October 2019

ESA congratulates 2019 Nobel Prize in Physics laureates Michel Mayor and Didier Queloz, who have been awarded the prestigious prize for the first discovery of an exoplanet orbiting a solar-type star, and James Peebles, honoured for the theoretical framework of cosmology used to investigate the Universe on its largest scales.

CHEOPS launch

CHEOPS launch

CHEOPS liftoff replay
18 December 2019

CHEOPS, ESA's 'Characterising Exoplanet Satellite', was successfully launched from Europe's Spaceport in Kourou, French Guiana, at 08:54:20 UTC (09:54:20 CET) on 18 December 2019. Watch the replay of the liftoff here.

CHEOPS launch media kit
10 December 2019

Download this interactive media kit to learn more about the launch of CHEOPS and the science goals of the mission.

Spotlight On ...

Spotlight On ...

CHEOPS brochure
3 April 2019Find out more about CHEOPS, the CHaracterising ExOPlanet Satellite, and its mission to study planets beyond our Solar System.
CHEOPS paper model - Assemble your own planet watcher
20 March 2018Print out and build a paper model of CHEOPS, the CHaracterising ExOPlanet Satellite.

CHEOPS journals

CHEOPS journals

#17: Practice makes perfect for CHEOPS inflight operations
25 June 2019It takes collaboration and teamwork to operate a spacecraft. As the CHEOPS launch approaches, a Europe-wide team is preparing to take control of inflight activities once the satellite is in space.
#16: CHEOPS is ready for flight
11 March 2019Recent months on the CHEOPS mission have seen the completion of spacecraft testing and the conclusion of a very important review, which determined that the satellite is ready to fly.
#15: A jigsaw falling into place: CHEOPS end-to-end testing complete
12 February 2019After a successful series of tests, the team that will operate the CHEOPS mission is ready for the activities to follow the satellite launch later this year.

From Our Partners

Announcements

Announcements

CHEOPS AO-1 Programmes
24 July 2019Observing time on CHEOPS in the Guest Observers Programme has been awarded to 12 proposals received in response to the CHEOPS first Announcement of Opportunity (AO-1).

Featured Publications

Featured Publications

CHEOPS Definition Study Report (Red Book)
19 December 2013Reference: ESA/SRE(2013)7. This Definition Study Report (also known as the Red Book) presents the outcome of the CHEOPS Definition study. It describes the resulting mission concept that will fulfil the mission science requirements, and therefore allow us to achieve the science objectives presented in the original proposal, and further detailed...
25-Jan-2020 20:52 UT

ShortUrl Portlet

Shortcut URL

https://sci.esa.int/cheops

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