Red-light devices are all over social feeds and make enormous promises. From the many, we find the few that are actually worth your commitment, time, and money.

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.

In October 1604, astronomer and mathematician Johannes Kepler spotted a new star in the sky and began tracking it. Over the course of several weeks, the star remained visible in the daytime and ...

The explosion of a star, called a supernova, is an immensely violent event. It usually involves a star more than eight times ...

An international team, including astronomers from Keele University, has performed a unique cosmic test to measure the mass of ...

A giant gas planet comparable in size to Saturn exists around a small red dwarf star. The discovery is beyond the scope of conventional astronomy theory, and is making experts reconsider conventional ...

Betelgeuse, the red supergiant that marks Orion’s shoulder, has entered its dimmest phase in recorded history, sparking ...

The smoking gun of the creation of lithium in explosions on white dwarf stars may have been found, in a spike of gamma rays ...

ALDI has enforced a strict one-bottle limit on a £14.95 item ranked the best in the world. Shoppers are desperate to get ...

New observations show a star that blew up in two separate bursts, confirming a long-suspected cosmic phenomenon called a ...

Astronomers capture first image of a white dwarf exploding twice in space Rare double-detonation seen in supernova remnant ...

The largest and brightest is an enormous supergiant star about 100 times the mass of the Sun and five million times brighter.