Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

Earth's oceans are mysterious, largely unexplored places, but the enormous oceans of Neptune and Uranus have them beat.

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

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

An amateur astronomer discovered Pluto 95 years ago today. The former planet will complete an orbit in another 153 years.

However, you might be surprised to know that Earth is not alone in having volcanoes – in fact, it’s beaten numerically by the ...

You're far from alone if you’re craving balmier, sunnier spring days. As wintertime’s icy chill and darker days linger, it’s ...

According to astrologer Patty Kamson, this year’s Valentine's Day is a energy is a mix of romance and practicality.

Every zodiac sign has its own love-ruler — astrologer Bryanna Collier explains what's in store for each one this year.

"Pale Blue Dot" – one of the last photos taken by Voyager 1 – is still the most distant image of the Earth. Astronomer Carl ...

Venus is now at its almost unbelievably brightest at a marvelous time when many other (though less radiant) planets and ...