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Nasa has completed the assembly of the Nancy Grace Roman Space Telescope. This mission will map the universe 100 times faster than Hubble.

Add Yahoo as a preferred source to see more of our stories on Google. NASA’s SPHEREx space telescope will search for the key ingredients for life across our galaxy. - Benjamin Fry/BAE Systems/NASA ...

Its electronic gaze will sift through endless voids and millions of galaxies to hunt dark matter.

KOUROU, French Guiana - The James Webb Space Telescope, Hubble’s bigger, more powerful successor, is scheduled for liftoff on Christmas morning from the coast of South America. It will be the largest ...

UPDATE (March 11, 7:53 p.m.) — SpaceX officials in a post on social media said all systems are looking good for Tuesday evening's launch. UPDATE (March 10, 8 p.m.) — SpaceX is now targeting Tuesday ...

Called CDG-2, this newly identified “ghostly” galaxy may be one of the most dark matter-dominated galaxies ever discovered, with a staggering 99% of its total mass made up of dark matter — a ...

NASA has detected a precursor or progenitor to a supernova for the first time – and it's all thanks to old photos. Researchers have now been able to study some of a supernova's progression by ...

Editor’s note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. (CNN) — NASA’s newest space telescope, ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific ...

(CNN) — NASA’s newest space telescope, SPHEREx, designed to seek out the key ingredients for life in the Milky Way, and a sun-focused mission called PUNCH, will have to wait a bit longer to lift off ...