This Live Lesson is packed with curriculum-linked fun as children make a movie starring the Moon from CBBC's Horrible Science ...

Monroeville Public Library is holding a three-part children’s series on space, where participants learn fun facts about the sun, planets, stars and asteroid belt. The first session this month was ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

All of our solar system’s planets are lining up in the night sky at once this week. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known as a great ...

Our solar system has been around for 4.6 billion years. While that sounds like a long time, it's just a blip in the 13.8 billion-year story of the universe. And one day, the solar system will cease to ...

Editor's note: This article was updated March 25 at 11:40 a.m. ET to account for the recent discovery of new moons around Saturn and Jupiter. The total number of planetary moons and small-body ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with atmosphere, they have a wide range of characteristics distinguishing them. But if ...