Could a lonely planet wander aimlessly through the restless galaxy change the subtle dance of gravity within our solar system ...

The Earth's movement is primarily directed towards the star Lambda Herculis at an approximate speed of 45,000 mph (72,000 km/h). This velocity, while significant, would require approximately 5.5 ...

After reviewing the gorgeous Sky Guide, an iPad app that shows budding astronomers their way around the night sky, I was anxious to try out Cosmographia ($2.99), another iPad astronomy app by Fifth ...

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 ...

This mysterious ninth planet could be found within the next ‘two years’, one expert said (Picture: Getty Images/iStockphoto) We’re closer than ever before to knowing whether there is a ninth planet ...

Looking back at the history of scientific research, studies on celestial bodies at the edge of the solar system have always ...

Astronomers have found that a weird space rock at the edge of the solar system is locked in a rhythmic dance with Neptune. The object, designated 2020 VN40, is part of a family of distant solar system ...

A total solar eclipse will not occur on August 2, 2025, despite viral claims. The real event is on August 2, 2027, featuring one of the longest durations of totality this century. Students can learn ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...