Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that the next won’t happen until 2040.

There are several icy moons in our solar system, including Neptune’s moon Triton, Saturn’s moons Enceladus and Titan, and Jupiter’s moons Ganymede, Callisto and Europa.

The methane gives Neptune its blue color. Neptune has 14 moons, the largest of which is Triton. Triton is slightly smaller than Earth's moon and has active volcanoes. Neptune has a series of faint ...

Finally, Neptune, the farthest planet from the Sun, has a striking blue color due to methane in its atmosphere and 14 moons, including Triton, which features active volcanoes. Astrological ...

The northern and southern lights, auroras visible from the poles, glow with a range of different colored lights. Here's the reason for each of those colors.

Non-mixing layers of water and hydrocarbons thousands of miles deep could explain the icy planets’ strange magnetic fields.

Five of the brightest planets will be visible to the naked eye. With help, you may even spot Uranus and Neptune.

The Grand Canyon in Arizona is one of Earth's natural wonders, carved out over millions of years by the gradual erosion power ...

Today, the Moon in Cancer dances in a tender trine to Neptune in Pisces, weaving a spell of softness and imagination. You might find yourself curling under a warm blanket, the glow of the ...