America's rapid adoption of LED lighting saves money and uses less electricity. But it's also making it harder to see the stars. Light pollution comes from excessive artificial light that causes ...

When astronomers first observed a star that was shredded ... of properties hinting at the shapes of objects. According to co-author Kishore Patra, much of the light emitted from the accretion ...

There's no shortage of round celestial objects in our universe. Planets, moons and stars all exhibit lovely spherical shapes.

The speed of light is the fastest anything can travel. What happens to a photon from a galaxy 25 million light years away on ...

"The shape of the stellar halo is a very ... The stellar halo extends out several hundred thousand light years above and below the star-filled plane of our galaxy, where our Solar System resides.