galaxies
Why is Everything Spherical?
Have you ever noticed that everything in space is a sphere? The Sun, the Earth, the Moon and the other…
How Much of the Universe is Black Holes?
We all fear black holes, but how many of them are there out there, really? Between the stellar mass black…
“Fossil Galaxy” Discovered From the Early Universe
A small galaxy circling the Milky Way may be a fossil left over from the early Universe. The stars in…
‘Runaway’ Star Cluster Breaks Free from Distant Galaxy
We've discovered dozens of so-called "hypervelocity stars" — single stars that break the stellar speed limit. But today astronomers multiplied…
New Hubble View Shows Objects a Billion Times Fainter Than Your Eyes Can See
While this image isn’t as deep as the Hubble Deep Field, this 14-hour exposure by the Hubble Space Telescope shows…
Why Do Galaxies Have Arms?
Spiral galaxies get their name because of their beautiful spiral shape and iconic arms. But why do galaxies have these…
Nearby Stream of Stars Reveals Past Cosmic Collision
The tangled remains of vast cosmic collisions can be seen across the universe, such as the distant Whirlpool Galaxy’s past…
Weekly Space Hangout – January 17, 2014: Astronomers Without Borders, & Jelly Donuts
Host: Fraser Cain Guests: Mike Simmons from Astronomers without Borders, Nicole Gugliucci, Jason Major, Casey Dreier, Brian Koberlein, Nancy Atkinson,…
Space Telescopes Look Back 13.2 Billion Years and See Surprisingly Luminous Galaxies
What was the Universe like more than 13 billion years ago, just 500 million years after the big bang? New…
Can Stars Collide?
Imagine a really bad day. Perhaps you’re imagining a day where the Sun crashes into another star, destroying most of…