The secretive Russian satellite in space that U.S. officials believe is connected to a nuclear anti-satellite weapon program ...

A rock containing many smaller round stones could indicate that there was once a large amount of liquid water on the Red ...

A new study released on Thursday describes a search for what are called "microlensing" events, where a planet acts as a ...

Astronomers have discovered that super-Earth exoplanets are more common across the universe than previously thought. While it can be relatively easy to locate worlds that orbit close to their star, ...

The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a ...

Katy Perry kicked off her Lifetimes tour just days after coming back down to Earth — literally — after her trip to space ...

Katy Perry snapped an onstage selfie with two fans dressed as astronauts during the opening night of her Lifetimes Tour.

An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the ...

Just 10 days after making headlines for her trip to space, Katy Perry kicked off her highly anticipated Lifetimes Tour with a ...

Katy Perry is reportedly dealing with low ticket sales for her "Lifetimes Tour" even before she embarked on an all-female ...

The Nashville Predators released plans for a $650 million, 175,000-square-foot expansion. But that's just the beginning.