Is the universe’s expansion slowing down? Astronomers cast doubt on Nobel-winning theory

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.
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How Are Hubble Space Telescope Images Colorized And Processed?

Hubble Space Telescope can "only see the universe in shades of grey," according to NASA's Goddard Space Flight Center. Learn ...
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Rarely Seen Early Universe Quasars On Collision Course Via Hubble Telescope

A pair of quasars that existed when the universe was only 3 billion years old has been spotted by the Hubble Space Telescope.
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James Webb Space Telescope captures 'one-of-a-kind' triple star system that looks like a cosmic embryo (image)

A nested series of dusty spirals is captured swirling around a mighty triple star system containing two of the rarest stars ...
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James Webb Space Telescope spots rapidly feeding supermassive black hole in the infant universe: 'This discovery is truly remarkable.'

Using the James Webb Space Telescope (JWST), astronomers have uncovered a voraciously feeding and rapidly growing ...

See all the new images NASA has taken of the interstellar comet

A comet hurtling through the solar system from interstellar space is exactly what it appears to be, NASA officials said Wednesday, moving to quash a wave of online speculation.

Q&A: Euclid mission's quest to reveal hidden patterns of cosmic evolution

The European Space Agency's Euclid mission—designed to map the geometry of the dark universe with unprecedented ...