Tagged: galaxy

‘Old Faithful’ galaxy has brilliant outbursts every 114 days

An “Old Faithful”-like event in space may shed light on the nature of stars near supermassive black holes embedded in galaxies. Researchers saw repeated outbursts — every 114 days, on average — in a galaxy some 570 million light-years away from Earth. (For perspective, the...

NASA finds ‘Lost Galaxy’ shining out of Virgo’s bosom

This hazy spiral galaxy is one of the largest in the Virgo cluster — a collection of more than 2,000 galaxies. In the 1950s, when amateur astronomer Leland S. Copeland first fixed his telescope lens on a distant galaxy in the Virgo constellation, he saw...

The Trouble With Counting Aliens

A new study estimates that there might only be 36 communicating extraterrestrial civilizations in our galaxy. But that number doesn’t tell the whole story. IN THE SEARCH for extraterrestrial intelligence, there’s really only one big question: Where is everybody? This question has haunted alien hunters...

How do galaxies form?

The largest structures in the universe bind billions or even trillions of stars in their massive gravitational yokes. Cosmic dust and vast clouds of gas fill galaxies, too, along with the planets and other matter that may orbit stars. Galaxies got their start nearly 14...