NASA's Roman to Peer Into Cosmic 'Lenses' to Better Define Dark Matter
7 Articles
7 Articles
NASA's Roman to peer into cosmic 'lenses' to better define dark matter
Dark matter affects how stars move within galaxies, how galaxies build up over time, and how everything in the universe is held together—but no existing tool has directly detected it. While dark matter does not reflect, absorb, or emit light, it can still be indirectly observed by telescopes.
NASA's Roman to Peer Into Cosmic 'Lenses' to Better Define Dark Matter (STScI - Space Telescope Science Institute)
) 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. A particular subset of gravitational lenses, known as strong lenses, is the focus of a new paper published in the Astrophysical Journal led by Bryce Wedig, a graduat…
NASA's New Telescope to Reveal Dark Matter Using Cosmic Lenses and Gravitational Forces
NASA’s Nancy Grace Roman Space Telescope, set to begin operations in 2027, will revolutionize our understanding of dark matter by using gravitational lenses to study this mysterious force. By harnessing the immense power of gravitational lensing—a phenomenon predicted by Einstein—Roman will examine the mass distribution of galaxies and provide the most detailed images of the universe ever captured. This technique, which involves studying how gal…
It is well established today that the most massive and compact galaxies tend to regroup more spatially than those that are less compact. These results can be understood in terms of the formation of galaxies in halos of cold black matter. But a team of Chinese researchers have just discovered a completely unexpected behavior that goes in the opposite direction concerning dwarf galaxies. The less compact the dwarf galaxies, the more they tend to r…


NASA’s Roman to Peer Into Cosmic ‘Lenses’ to Better Define Dark Matter
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