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 ...

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

A new study has been accepted by the Journal of Cosmology and Astroparticle Physics that proposes two new models of black ...

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.

"Theories involving substantial formation of stars prior to or together with the black hole formation and growth are very ...

New research is shedding light on what researchers call "lite" intermediate-mass black holes, which are smaller, but still ...

With the recent first light milestone for the Vera Rubin Observatory, it's only a matter of time before one of astronomy's ...

The search for dark matter requires all the best models, theories, and ideas we can throw at it. A new paper by Julia Monika Koulen, Stefano Profumo, and Nolan Smyth from the University of California ...

Are we living in a cosmic void? New theory suggests our galaxy sits in a giant hole warping the universe's expansion.