| Milky Way core drives wind at 2 million miles per hour Posted: 05 Jan 2015 03:25 PM PST At a time when our earliest human ancestors had recently mastered walking upright, the heart of our Milky Way galaxy underwent a titanic eruption, driving gases and other material outward at 2 million miles per hour. Now, at least 2 million years later, astronomers are witnessing the aftermath of the explosion: billowing clouds of gas towering about 30,000 light-years above and below the plane of our galaxy.  |
| Hubble's high-definition panoramic view of Andromeda galaxy Posted: 05 Jan 2015 03:25 PM PST The largest NASA Hubble Space Telescope image ever assembled, this sweeping view of the Andromeda galaxy (M31) is the sharpest large composite image ever taken of our galactic neighbor. Though the galaxy is over 2 million light-years away, the Hubble telescope is powerful enough to resolve individual stars in a 61,000-light-year-long section of the galaxy's pancake-shaped disk.  |
| Hubble goes high def to revisit the iconic ‘Pillars of Creation' Posted: 05 Jan 2015 03:25 PM PST In celebration of its 25th anniversary, NASA's Hubble Space Telescope has revisited the famous "Pillars of Creation" region of the Eagle Nebula (M16), providing astronomers with a sharper and wider view. As a bonus, the pillars have been photographed in near-infrared light, as well as visible light.  |
| Stars' spins reveal their ages Posted: 05 Jan 2015 11:16 AM PST When you're a kid every birthday is cause for celebration, but as you get older they become a little less exciting. You might not want to admit just how old you are. And you might notice yourself slowing down over the years. You're not alone -- the same is true of stars. They slow down as they age, and their ages are well-kept secrets. Astronomers are taking advantage of the first fact to tackle the second and tease out stellar ages.  |
