The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration.

The bold question-askers at What If venture beyond the event horizon to speculate what could lie inside a black hole.

Imagine if a species grew up on a planet that had a black hole moon the mass of the moon. They’d have tides, they’d have an unobstructed view of the night sky, and they’d have no clue about this ...

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

But in the past two decades, new types of black holes have been seen and astronomers are beginning to understand how they ...

In summer, we face toward the Milky Way's hub in the Teapot constellation, home to the galaxy's supermassive black hole.

With the recent first light milestone for the Vera Rubin Observatory, it's only a matter of time before one of astronomy's most long-awaited surveys begins. The Legacy Survey of Space and Time (LSST) ...

The search for dark matter requires all the best models, theories, and ideas we can throw at it. A new paper by Julia Monika ...