The Sun, our nearest celestial neighbor, is undeniably a star, not a planet, as centuries of astronomical observations have confirmed. However, the boundaries of celestial definitions are continually ...

The sun arrives at the December solstice at 10:03 a.m. EST on Dec. 21. This is the farthest south the sun gets in the heavens; it begins its six-month return northward at the moment winter begins in ...

Which planet is the furthest from the sun? Some may think it’s Pluto, but it’s actually Neptune. Learn more about this ice ...

January is a good month for interesting planetary alignment. You will have a lot going on in the night sky. For most of the month, six out of the eight planets will be visible in the heavens. Mercury ...

The flare might just inspire a display of Northern Lights even in Illinois, Oregon, Alabama, and Northern California.

The Sun's formation caused temperature differences in the surrounding disk of gas and dust. Inner, hotter regions formed rocky planets from less volatile elements. Outer, colder regions allowed ...

Six planets are hanging out in the sky this month in what’s known as a planetary parade. Catch the spectacle while you can because it’s the last one of the year. These linkups happen when several ...

It's time once again for the Perseid meteor shower! Meteors from this annual celestial display are remnants from the ancient comet Swift-Tuttle, which orbits the sun and deposits debris every 133 ...

Kuiper is an outer region of the Solar System that extends from the orbit of the planet Neptune, called Edgeworth , about 30 ...

When most people think of astrology, they typically think of their zodiac sign, also known as their Sun sign—the one that ...

Elon Musk spends plenty of time talking about Mars, but every now and then he swings back to the planet that actually needs ...