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Nancy Grace Roman Space Telescope

Galaxies, Stars, & Black Holes

Goddard Space Flight Center

Stars

NASA’s Roman to Use Rare Events to Calculate Expansion Rate of Universe

Astronomers investigating one of the most pressing mysteries of the cosmos – the rate at which the universe is expanding – are readying themselves to study this puzzle in a new way using NASA’s Nancy Grace Roman Space Telescope. Once it launches by May 2027, astronomers will mine Roman’s wide swaths of images for gravitationally […]

Posted February 7, 2024

Euclid

James Webb Space Telescope (JWST)

Nancy Grace Roman Space Telescope

SPHEREx (Spectro-Photometer for the History of the Universe and Ices Explorer)

Stellar Evolution

What is Dark Energy? Inside our accelerating, expanding Universe

Some 13.8 billion years ago, the universe began with a rapid expansion we call the big bang. After this initial expansion, which lasted a fraction of a second, gravity started to slow the universe down. But the cosmos wouldn’t stay this way. Nine billion years after the universe began, its expansion started to speed up, […]

Posted February 5, 2024

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25

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