The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

Here's how to watch the July full moon, along with appearances from planets and constellations in the night sky.

The newest visitor is 416 million miles (670 million kilometers) from the sun, out near Jupiter. NASA said the comet will ...

Mars shines in the evening, and is joined briefly by Mercury. Jupiter joins Venus as the month goes on. And all month, look ...

NASA also points out that July and August is an excellent chance to view the constellation Aquila, also known as the eagle as ...

Astrophysicist Josep Trigo-Rodriguez of the Institute of Space Sciences near Barcelona, Spain, believes it is an interstellar ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Mars rules your sign, Aries. Being in sextile with Jupiter magnifies your energy. This is no rush into action without thought ...

What do the clouds on Jupiter, dust storms on Mars and rainstorms on Titan all have in common? They look like they belong on ...