Scientists suspect lightweight dark matter might ionize hydrogen in the Milky Way’s core. This could also explain the 511-keV ...

Nevada is one of very few places left in the country where there is so little artificial light the Milky Way is visible to the naked eye.

Recent research proposes a new form of dark matter that may actually be lighter in mass than other dark matter candidates.

Scientists say they've uncovered the "largest known galactic structure" — a cosmic monster that spans a mind-boggling 1.4 ...

Fortunately, there are solutions that save money and preserve the dark night sky. The most important step is to shield outdoor lighting so it is cast downward. Other measures include putting ...

On Rum, Europe’s newest dark-sky sanctuary, the island’s 40 residents have learned to embrace darkness. On Rum, Europe’s newest dark-sky sanctuary, the island’s 40 residents have learned ...

“Those are places that are going to be fairly disconnected from large communities, but it’s a place where you’ll see the Milky Way very clearly,” says Dan Oakley, the chair of the Dark Sky ...