There appears to be a pulsar - a rapidly spinning dead star - located about a light-year from the black-hole center of our galaxy.

"I think that people who talk about humans as very unique in terms of our emotional meaning-making should take a look at the apes," says Barbara King.

Jean Decety, a neuroscientist, studies human empathy. He talked to EarthSky on his study on how children with aggressive conduct disorder process empathy.

Larry Mayer, referring to the United Nation’s Law of the Sea, a 27-year-old treaty that allows countries to extend their maritime boundaries - if they back their claim requests with science. To support the U.S. claim, Mayer and his team have mapped more than a million square kilometers of seafloor since 2003.

Dr. Ardis Hoven told EarthSky that her organization, of more than a quarter million physicians and medical students in the U.S., believes the health care system in the U.S. needs reform.

GD 50 was born in the Pleiades star cluster, then was flung out, possibly after passing too close to another star.

There are some differences between sunlight and artificial light - most artificial light doesn't emit as much energy in the red and blue region of the light spectrum as sunlight does.

If you were on a planet orbiting a star in this Andromeda Galaxy, and could look back our Milky Way galaxy, it's thought our home galaxy would look a lot like this.

This is the first time that the density has been measured for such a small exoplanet, and the measurements suggests a solid, rocky world.

Birthstones are special stones associated with each month of the year. They have a place in history, mythology and science. Check out the special story of your birthstone.