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

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say.

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 ...

The National Aeronautics and Space Administration has confirmed an interstellar object is passing through our solar system.

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

IMAP mission will explore our solar system's protective heliosphere and will also help us develop a better understanding of ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers ...

A group of astronomers from the US, Europe, Chile and South Africa have determined that 70,000 years ago a recently discovered dim star is likely to have passed through the solar system’s distant ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

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 ...

There are quite a few other places we might find life in the solar system, including dwarf planets like Ceres. Ceres is ...