A massive 500,000-mile-wide (800,000-kilometer) coronal hole in the sun's atmosphere is unleashing a stream of fast-moving ...

This 5th-magnitude sun is a carbon star, meaning it possesses high quantities ... the North Star - the only star in our sky that does not move. By 9 P.M. local time, the Big Dipper appears to stand on ...

The four planet-strong "planet parade" currently visible to the naked eye in the night sky for a short time after sunset will ...

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Although the occurrence climaxed on Jan. 21 with a conjunction—close alignment—of Saturn and Mercury, the planetary parade ...

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.

Sun dogs. You may have noticed these as a tiny rainbow spot in the sky. I get questions about these all the time. For Sun dogs to appear, you need sunshine and ice crystals suspended in the ...

The night sky will offer stargazers ... in our solar system all orbit the sun in roughly the same flat plane, known as the ecliptic—but they move at different speeds. Earth, for instace, takes ...

STARGAZERS are in for a treat this month as a rare planet parade falls in Andromeda galaxy season. “One of the best planet ...