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

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

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 ...

The crescent-shaped gas cloud is located about 300 light years away from Earth. It sits on the edge of the Local Bubble, a large gas-filled cavity in space that encompasses the solar system.

NASA's New Horizons spacecraft flew past Pluto in 2015, giving it an unprecedented opportunity to view the universe's Lyman-alpha emissions—an important kind of ultraviolet light that can reveal new ...

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 ...

Scientists have discovered a gigantic, glowing gas of hydrogen gas lurking just 300 light-years away.

But as those first luminous objects shined, their intense emissions of ultraviolet and x-ray radiation heated up the gas and broke the hydrogen atoms back into constituent electrons and protons.

An enormous glowing cloud that contains approximately 3,400 solar masses worth of gas has been discovered near the solar system ...