galaxy formation

Virtual 'Universe Machine' Sheds Light on Galaxy Evolution

Virtual 'Universe Machine' Sheds Light on Galaxy Evolution

By creating millions of virtual universes and comparing them to observations of actual galaxies, a University of Arizona-led research team has made discoveries that present a powerful new approach for studying galaxy formation.

It Turns Out, Andromeda is Younger Than Earth… Sort Of

It Turns Out, Andromeda is Younger Than Earth… Sort Of

Since ancient times, astronomers have looked up at the night sky and seen the Andromeda galaxy. As the closest galaxy to our own, scientists have been able to observe and scrutinize this giant spiral galaxy for millennia. By the 20th century, astronomers realized that Andromeda was the Milky Way’s sister galaxy and was moving towards us. In 4.5 billion years, it will even merge with our own to form a supergalaxy.

We’ve found a new family of stars in the Milky Way that could help us work out how galaxies formed

We’ve found a new family of stars in the Milky Way that could help us work out how galaxies formed

One of the most fundamental questions in modern astrophysics is how galaxies first formed. The Milky Way, the galaxy we live in, is an amalgamation of about 100 billion stars, gas, dust and enigmatic dark matter – all held together by gravity. The Milky Way itself is but one of many hundreds of billions of galaxies in the observable universe, with a wide range of sizes, masses, shapes and colours.

We’ve found a new family of stars in the Milky Way that could help us work out how galaxies formed

We’ve found a new family of stars in the Milky Way that could help us work out how galaxies formed

One of the most fundamental questions in modern astrophysics is how galaxies first formed. The Milky Way, the galaxy we live in, is an amalgamation of about 100 billion stars, gas, dust and enigmatic dark matter – all held together by gravity. The Milky Way itself is but one of many hundreds of billions of galaxies in the observable universe, with a wide range of sizes, masses, shapes and colours.