Known as the cosmic microwave background, the microwaves are a relic from a time when the universe was first cooling down ...

Our current best theories of the universe suggest that dark energy is making it expand faster and faster, but new ...

A European space telescope launched to explore the dark universe has released a trove of new data on distant galaxies.

"Light pollution from projects like INNA doesn't just hinder research, it steals our shared view of the universe." ...

Scientists are homing in on the nature of a mysterious force called dark energy, and nothing short of the fate of the ...

Europe's Euclid space telescope, which is on a mission to shed light on the mysteries of dark matter and dark energy, ...

A new map of cosmic expansion suggests that dark energy evolves over time, hinting that the universe doesn’t work the way we ...

New data further challenge the best scientific theory of the history and the structure of the universe. But a separate recent ...

The DESI experiment shocked cosmologists with a hint that dark energy varies over time. Now, with more data, the conclusions hold up.

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.