It's unlikely you'll be able to walk outside and see a line of planets, but according to NASA, a seven-planet parade happening tonight could be visible in some form in parts of the U.S. The upcoming ...

Astronomers have revealed new evidence that not just one, but four tiny planets are circling around Barnard's Star, the ...

For decades, students learned the phrase "My Very Educated Mother Just Served Us Nine Pizzas" to remember the order of the planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter ...

Did you miss the last planetary alignment in January? Well, you're in luck. The next one is on Feb. 28 and is viewable from ...

Seven planets will line up for a rare "planetary parade" today (Feb. 28) and you can watch it live online, beginning at 12:00 ...

An alignment of seven planets will appear, whether by the naked eye or with the use of a telescope, this month in the U.S. Here's how to spot it.

Studying the orbits of thousands of exoplanets shows that large planets tend to have elliptical orbits, while smaller planets tend to have more circular orbits. This split coincides with several other ...

Whenever planets are visible in the night sky, they always appear roughly along the same line. This path, known as the ...

Seven out of the eight planets will align in the sky for the last time in 15 years tonight. Mars, Jupiter, Uranus, Venus, Neptune, Mercury, and Saturn will all be in a line in the sky from the east to ...

A very rare treat is about to grace Earth's night skies.

Astronomers have revealed new evidence that there are not just one but four tiny planets circling around Barnard's Star, the second-nearest star system to Earth.