An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Leo P, a tiny galaxy, stopped making stars after the universe’s reionization. Unlike most galaxies, it restarted billions of ...

Astronomers compile a large sample of an unusual class of objects in an effort to connect the dots to the early universe.

This week, astrological alignments bring transformative opportunities for Gemini, Cancer, and Pisces. Key cosmic events ...

The early universe experienced a phase of rapid expansion, known as inflation. For decades, cosmologists assumed that this ...

Conjunto music legend Flaco Jiménez, 85, has been hospitalized, according to multiple Facebook posts from people close to the ...

A new study suggests that the cosmic web could have formed without relying on inflation driven by a scalar field. Instead, it ...

MIT astronomers have been captivated by the strange behaviors of a supermassive black located 270 million light-years away, ...

The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous -- and highly debated -- results had shown: The Universe is expanding faster than predicted by ...

What better way to start a season about the Earth than by looking back on it from an astronaut’s perspective? At a time when the activities of assorted billionaires and emerging superpowers are making ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...

Grand cosmic events demand electrons to reach relativistic speeds. A new study explains where they get their initial energy ...