The "dark universe detective" space telescope Euclid has discovered its first Einstein ring in the process, learning about ...

Hubble’s high-resolution imagery allowed researchers to hone in on more of the Bullseye galaxy’s rings — and helped confirm ...

The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration. At the same time several telescopes, including the Chandra X-ray Observatory ...

What will happen to the solar system when the Milky Way completes the merger with the Andromeda Galaxy? Bryan MitchellMaricopa, Arizona Your excellent question affords us the opportunity to ...

The passing gravitational waves “stretch or contract the universe by around 20 meters [about 65 feet] or so,” says Matthew ...