Europe’s exoplanet hunter blasts off from Earth

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Europe’s CHEOPS planet-hunting satellite left Earth on Wednesday a day after its lift-off was delayed by a technical rocket glitch during the final countdown.
The 30-centimeter (12-inch) telescope has been designed to measure the density, composition, and size of numerous planets beyond our solar system — so-called exoplanets.
According to the European Space Agency (ESA), CHEOPS will observe bright stars that are already known to be orbited by planets.
The mission “represents a step towards better understanding the astrophysics of all these strange planets that we have discovered and which have no equivalent in our solar system”, 2019 Nobel Physics Prize winner Didier Queloz told AFP on Tuesday.
Around 4,000 such exoplanets have been discovered since Queloz and his colleague Michel Mayor identified the first one, called “51 Pegasi b”, 24 years ago.
The satellite took off at 0854 GMT from Europe’s launchpad in Kourou, French Guiana, according to live footage broadcast by launch company Arianespace. Read more
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