If alien civilizations have a vast communication network, we might be able to detect echos of it.
A new paper looks at how gravitational stars would appear as an alternative to black holes.
New evidence suggests that the dwarf planets Eris and Makemake are geologically active worlds like Pluto.
The Euclid spacecraft’s 6-year mission will map more than a billion galaxies to study dark energy.
New observations of a fast radio burst shows how magnetars can power them.
Nearby passing stars have shifted Earth’s orbit over time, making paleoclimate studies more difficult.
Fast Radio Bursts could give astronomers a new way to measure cosmic expansion.
The event horizon telescope has zoomed in on another supermassive black hole.