> astronomy
> astronomy
Get ready for Galactic Tick Day! (VIDEO)
One "galactic tick" represents 1/100th of an arcsecond’s worth of the orbit of our solar system around the Milky Way. Got that?...
For the first time, scientists discover exoplanets in a galaxy far, far away! (PHOTO)
They appear to be “rogue” planets not circling a star in a conventional solar system but roaming free around the far-off galaxy!