A quiet, glowing gas cloud has been hiding in plain sight not far from Earth. For decades, astronomers have predicted that ...

Ultraviolet (UV) light shining from these small galaxies may have powered an epoch known as the Era of Reionization, clearing the fog of hydrogen gas that permeated the universe in its first ...

A surprising discovery at the heart of the Milky Way is forcing scientists to rethink how massive structures called Fermi ...

Greetings, stargazers. Emission nebulae are the subject of many of the most spectacular astrophotographs published in the last decade. Although there are many subcategories of nebulae, they all ...

Astronomers have discovered a massive hydrogen cloud, known as Eos, shining brightly in ultraviolet light near our solar system. This newly detected cloud offers fresh insights into how stars and ...

Astronomers using the Green Bank Telescope spotted surprisingly cold, dense hydrogen clouds embedded inside the Milky Way’s ...

Eos appeared in data from FIMS-SPEAR, a far-ultraviolet spectrograph that flew aboard the Korean satellite STSAT-1. The instrument captured ultraviolet light emissions from molecular hydrogen, ...

Researchers have discovered cold hydrogen clouds within superheated Fermi bubbles at the Milky Way's center, challenging ...

A large, nearby molecular cloud composed mainly of molecular hydrogen, named Eos, has been detected about 300 light-years from Earth using far-ultraviolet fluorescence emission, a novel ...

New Horizons collects first map of galaxy in important type of ultraviolet light. Published:4/28/2025 4/28/2025 . Map of the universe's Lyman-alpha emissions collected by ... that hot interstellar gas ...

Scientists have discovered a gigantic, glowing gas of hydrogen gas lurking just 300 light-years away. As detailed in a paper to be published in the journal Nature Astronomy, the international team ...

For example, the ultraviolet radiation from the first stars interacts with hydrogen to imprint bubbles in the 21-cm signal with a radius of circa 100 million light-years.