The European Space Agency said on Wednesday its space telescope Euclid is scheduled to launch on July 1, blasting off on a mission to shed light on the mysteries of dark matter and dark energy.
The mission will launch on a SpaceX Falcon 9 rocket from Cape Canaveral in Florida, with the broadcast beginning at 1430 GMT, the ESA said in a tweet.
Euclid was originally planned to ride into space on a Russian Soyuz rocket, but last year Moscow withdrew its launchers in response to sanctions over the invasion of Ukraine.
The ESA was forced to turn to its rival SpaceX, the US company of billionaire Elon Musk, to launch the 1.4-billion-euro ($1.5 billion) mission.
The two-tonne Euclid, which is 4.7 metres (15 feet) tall and 3.5 metres (11 feet) wide, will join fellow space telescope James Webb at a stable hovering spot 1.5 million kilometres from Earth called the second Lagrangian Point.
From there, Euclid will chart a 3D map of the universe encompassing two billion galaxies across more than a third of the sky.
Euclid's gaze will stretch out to 10 billion light years away. Because of how long it takes the light from distant stars to reach Earth, that means it will peer back 10 billion years into the cosmic past.
The mission will allow scientists to reconstruct the history of the 13.8-billion-year-old universe via "slices of time," astrophysicist Yannick Mellier told the Euclid consortium earlier this month.
The existence of both remains entirely theoretical -- although also necessary for scientists to construct a working understanding of the universe.
Dark matter is invisible, its existence inferred from the motion of objects affected by its gravitational pull.
Dark energy is the name given to the unknown force causing the expansion of the universe to accelerate.
Euclid is not expected to identify the true nature of these dark mysteries, but astronomers hope its unprecedented view of the universe will shed light on how they act and evolve over time.
Euclid's first images are expected to roll in quickly once scientific operations start in October, but it will take scientists longer to sift through the massive amount of data.
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© Agence France-Presse
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