Tagged: galaxies

Most stars in the universe today are found in massive galaxies called ellipticals, named for their stretched-out-circle shape. Unlike our own galaxy, which is a spiral with arms extending out from the centre, the edges of elliptical galaxies are smooth.Most stars in the universe today...

A ROCKY “Super-Earth” planet has been spotted orbiting one of the Milky Way galaxy’s oldest stars. Astronomers in Hawaii say the distant world is one and a half times the size of Earth, but takes just half the time to orbit its star. That’s due...

Bullet Cluster, which provided first evidence of dark matter, can be seen via gravitation lensing in video If you’ve ever wondered what space sounds like, NASA has you covered. The space agency has posted several videos of what two supernovae and a colliding cluster of...

If you’ve ever wondered what space sounds like, NASA has you covered. The space agency has posted several videos of what two supernovae and a colliding cluster of galaxies “sound” like, thanks to its “data sonification” program. The Bullet Cluster, a cluster of galaxies 3.7...

Paul Sutter is an astrophysicist at The Ohio State University and the chief scientist at COSI Science Center . Sutter is also host of Ask a Spaceman , RealSpace , and COSI Science Now . Sutter contributed this article to Space.com’s Expert Voices: Op-Ed &...

This is a Hubble Space Telescope image of the compact green pea galaxy J0925+1403. The diameter of the galaxy is approximately 6,000 light years, and it is about twenty times smaller than the Milky Way. (NASA) About a billion years after the Big Bang, the...

At nearly the beginning of time, the universe was shrouded in darkness. Then, early galaxies produced bright, hot stars that leaked brilliant light intergalactic space through small channels, turning the universe transparent. That’s the conclusion from gorgeous new “mirror” images taken of a distant galaxy...

Seven to 10 billion years ago, a bunch of galaxies fell in with a bad crowd at the Coma cluster — a galactic group comprising thousands of their ilk. That crash “quenched” the ill-fated galaxies. They’d never again burn with hot, young stars. But the...

Astronomers have discovered that all galaxies rotate once every billion years, no matter how big they are. The Earth spinning around on its axis once gives us the length of a day, and a complete orbit of the Earth around the Sun gives us a...

Previously, planets have been detected only in the Milky Way galaxy. Now for the first time, astrophysicists at University of Oklahoma have discovered a population of planets beyond the Milky Way galaxy, using microlensing — an astronomical phenomenon and the only known method capable of...