Gravitational Lensing
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NASA
NASA’s Roman to Peer Into Cosmic ‘Lenses’ to Better Define Dark Matter
A funky effect Einstein predicted, known as gravitational lensing — when a foreground galaxy magnifies more distant galaxies behind it — will soon become common when NASA’s Nancy Grace Roman Space Telescope begins science operations in 2027 and produces vast surveys of the cosmos. This image shows a simulated observation from NASA’s Nancy Grace Roman Space Telescope with an overlay of its…
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NASA
Euclid Discovers Einstein Ring in Our Cosmic Backyard
Euclid, an ESA (European Space Agency) mission with NASA contributions, has made a surprising discovery in our cosmic backyard: a phenomenon called an Einstein ring. An Einstein ring is light from a distant galaxy bending to form a ring that appears aligned with a foreground object. The name honors Albert Einstein, whose general theory of relativity predicts that light will…
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