Tag: Galactic Evolution
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Stellar Stream Unveiled: A 163,000-Light-Year Trail in Messier 61 Breaks New Ground for Galaxy Mapping
Massive Stellar Stream Found in Messier 61 In a landmark discovery that highlights the Rubin Observatory’s power to chart unseen aspects of the universe, astronomers have identified a stellar stream stretching about 163,000 light-years within the galaxy Messier 61. The finding, announced after months of careful observation and data analysis, adds a dramatic new piece…
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New Theory of Universe Expansion May Upend How We Look at the Cosmos
Rethinking Standard Candles in Cosmology For decades, astronomers have relied on Type Ia supernovae as standard candles—cosmic beacons whose brightness helps measure distances across the expanding universe. This method underpins calculations of the Hubble constant, the rate at which the cosmos stretches. Yet recent work from researchers at Yonsei University in South Korea challenges a…
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Giant Neutral Hydrogen Bridge Revealed Between Dwarf Galaxies
Overview: A Giant Hydrogen Bridge Emerges Between Dwarf Galaxies Astronomers using the Australian SKA Pathfinder (ASKAP) as part of the WALLABY survey have revealed a spectacular, previously unseen structure in the nearby universe: a vast bridge of neutral hydrogen connecting two dwarf galaxies, NGC 4532 and DDO 137, located about 53 million light-years from Earth.…
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Hydrogen Bridge Between Dwarf Galaxies Unearthed in Virgo Cluster
Discovery of a Cosmic Gas Structure in Virgo In a discovery that reshapes our view of how galaxies exchange material, astronomers have identified a hydrogen bridge linking two dwarf galaxies in the Virgo Cluster. The stretch is made of neutral hydrogen and runs for about 156,000 light-years, connecting the galaxies and ending in a colossal…