In a groundbreaking discovery, astronomers have confirmed the approach of a “wandering planet” into our solar system. This ...

Created by the sun, the protective bubble of the heliosphere shields our solar system from harmful radiation. A new mission has launched to map it like never before.

What is the solar system? MADDIE MOATE: The universe is vast. CHILD: Vast means really, really big! MADDIE: There are a lot of stars in our universe. And the sun is a star that gives out heat and ...

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 ...

Discover the powerful volcanic eruptions that have shaped worlds across our solar system. Around our solar system, violent eruptions are shaping distant worlds. Discover the explosive forces that ...

The Earth is our planet. It is one of eight planets that move around the sun, each in an oval shaped, elliptical orbit close elliptical orbitAn orbit that is the shape of an ellipse. An ellipse is ...

An artist’s rendering of the IMAP spacecraft, which will explore and chart the boundaries of the ...

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

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