Terms of Service and Privacy Policy. The prevailing consensus in astrophysics is that the universe has spent the past 13-or-so billion years expanding outward in all ...

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding? Astronomers have tried two main methods to figure it out, but their numbers don ...

NASA's Hubble Space Telescope shows off an infrared view of the spiral galaxy M51, dubbed the Whirlpool Galaxy. 31,181 people played the daily Crossword recently. Can you solve it faster than ...

Current models suggest the universe is expanding evenly in all directions—much like a balloon being inflated—but it was not believed that the universe itself was rotating. There is a problem ...

Our new study of the nearby starburst galaxy Haro 11 has shown that strong X-ray-emitting superwinds may be a key mechanism enabling galaxies to leak ionizing radiation, which is believed to have ...

Although some compelling evidence exists to support the idea that a repulsive force similar to dark energy exists, it has yet to be directly observed or measured. To circumvent this uncomfortable ...