Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News Editorials & Other Articles General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Science

Showing Original Post only (View all)

Jilly_in_VA

(12,450 posts)
Mon Jan 6, 2025, 05:10 PM Jan 2025

How astronomers used gravitational lensing to discover 44 new stars in distant galaxy [View all]

The most powerful telescope to be launched into space has made history by detecting a record number of new stars in a distant galaxy.

NASA's James Webb Space Telescope, history's largest and most complex space observatory that serves thousands of astronomers around the world, has captured a unique image that revealed 44 individual stars in a galaxy 6.5 billion light-years away from the Milky Way, according to a paper published Monday in Nature Astronomy.

Astronomers used Webb's high-resolution optics and distortion in space to reveal the existence of dozens of previously unknown stars, the researchers said. The detection of a "treasure trove" of stars was only possible because the light from the 44 new stars was magnified by a large cluster of galaxies, called Abell 370, in front of it, according to the Center for Astrophysics.

The technique is known as gravitational lensing, which is when a massive amount of matter -- like a cluster of galaxies -- creates a gravitational field that distorts and magnifies the light from distant galaxies that are behind it but in the same line of sight, according to NASA. The effect is essentially like looking through a giant magnifying glass.

https://abcnews.go.com/Technology/how-astronomers-discovered-44-new-stars-distant-galaxy/story?id=117381763

The things this telescope is seeing just blow the mind!

1 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
Latest Discussions»Culture Forums»Science»How astronomers used grav...»Reply #0