Astronomers using NASA's Hubble Space Telescope have found something they never expected—ultraviolet light from a galaxy that ...

The Hubble Space Telescope captured ultraviolet light from MXDFz4.4, a 12.37-billion-year-old galaxy, revealing its role in ...

The James Webb Space Telescope has identified the earliest known supernova, a star that exploded when the universe was ...

Recent observations from the James Webb Space Telescope (JWST) are overturning our certainties about the timeline of the Universe. The reionization period, previously thought to have ended around one ...

The highly anticipated update of the analysis of data from the European Space Agency's Planck satellite starts with a first paper published in Astronomy and Astrophysics, which already holds in store ...

First, there was the Big Bang, and then there was light. Roughly 400,000 years after our universe formed, the hot environment from the Big Bang finally began to cool. Before this moment, the universe ...

For hundreds of a millions of years, the universe existed in the dark ages—an epoch when only primordial gasses existed. Then, a period of reionization, cleared away this foggy existence an introduced ...

During the epoch of reionization, the first galaxies were enshrouded in pristine neutral gas, with one of the brightest emission lines in star-forming galaxies, Lyman α (Lyα), expected to remain ...

New analysis of data taken by the European Space Agency’s (ESA) Planck spacecraft of the cosmic microwave background (CMB) has revealed that the “epoch of reionization” occurred much later than ...

Astronomers wish to confirm the connection between early galaxies and reionization because detailed studies of this period of cosmic history will reveal the physical processes that originally shaped ...