Tiny radio transmitters, some no bigger than a pencil eraser, are quietly rewriting what scientists thought they knew about ...

A NASA mission is underway to map the heliosphere, which is a huge protective bubble around the solar system that was created by the sun.

For the first time the rover's journey was planned by artificial intelligence (AI), and not by human operators, who usually choose the route. Find out more here.

The sunspot region 4366 fired off dozens of powerful solar flares in 24 hours, including the single strongest flare since ...