It sits in the heart of a galaxy so massive it bends light into the shape of a giant horseshoe. And within that galaxy lurks an even greater monster: a black hole 36 billion times the mass of our Sun.

Astronomers say they spotted signs of a giant explosion releasing from a star beyond our solar system, one powerful enough to destroy a planet’s atmosphere.

For the first time, astronomers have spotted a coronal mass ejection exploding from a star other than our Sun.

Gravitational waves—ripples in space-time caused by violent cosmic events—travel at the speed of light in every direction, eventually fading out like ripples in water. But some events are so ...

A colossal star met an unexpected fate when it drifted too close to a supermassive black hole 10 billion light-years away.

WASHINGTON, July 2 (Reuters) - The explosion of a star, called a supernova, is an immensely violent event. It usually involves a star more than eight times the mass of our sun that exhausts its ...

New multi-temperature coronal mass ejection observations might help us better understand how life emerged and evolved on Earth ...

First, let’s discriminate between expansion and expulsion. Expansion happens because the thermal pressure from the increased energy production in the Sun’s interior exceeds the gravitational force ...

The Sun, a star similar to others but uniquely close, is significantly larger than Earth (1.3 million Earths could fit inside) and possesses 99.86% of the solar system's mass. The Sun's physical ...