US EditionScientists Identify First Known ‘Failed Galaxy’ that Never Formed Stars
Hubble confirmed Cloud-9 as a starless, dark-matter-dominated relic with about 1 million solar masses of hydrogen and 5 billion solar masses of dark matter.
- On Monday, NASA's Hubble Space Telescope found a starless, gas-rich dark-matter relic nicknamed Cloud-9, published in The Astrophysical Journal Letters.
- Radio surveys by FAST and follow-up by the Green Bank Telescope and the Very Large Array found the starless relic three years ago, prompting Hubble follow-up due to ground-based telescopes' limited sensitivity.
- Hubble's Advanced Camera for Surveys found no stars in Cloud-9, radio measurements show one million solar masses of neutral hydrogen, with a 4,900 light-years core and five billion solar masses of dark matter.
- The team says Cloud-9 suggests many other small, dark-matter-dominated 'failed galaxies' may exist and offers new insights into the universe's dark components and early galaxy formation.
- Located on the outskirts of Messier 94, Cloud-9 shows slight gas distortions in high-resolution radio data suggesting interaction and remains vulnerable to ram-pressure stripping yet persists in a sweet spot.
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56 Articles
The Galaxy That Never Was
A team using the NASA/ESA Hubble Space Telescope has uncovered a new type of astronomical object —a starless, gas-rich, dark-matter cloud that is considered a “relic” or remnant of early galaxy formation. Nicknamed “Cloud-9,” this is the first confirmed detection of such an object in the Universe. The finding furthers the understanding of galaxy formation, the early Universe, and the nature of dark matter itself.
ABC FOX Montana
Space scientists discover first relic cloud that never formed stars
Nicknamed “Cloudâ9,” this is the first confirmed detection of such an object in the Universe.
Krem2 News
Scientists identify first known ‘failed galaxy’ that never formed stars
The discovery gave scientists a rare chance to study dark matter without interference from stars.
NASA discovery of 'Cloud-9' gives dark matter theorists something to chew on
SCIENTISTS from the United States' National Aeronautics and Space Administration (NASA) have identified what they describe as the universe's first confirmed example of a starless, gas-rich object dominated by dark matter, shedding new light on how galaxies form, Anadolu Ajansi reported. Read full story
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