Space explorations cannot rely on solar power alone. Especially when it comes to the far reaches of our solar system, the Sun ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The brains of astronauts ...

These changes aren’t permanent – the brain goes gradually back to normal after coming back to Earth. Understanding the ...

Long before any spacecraft can attempt a faster journey to Mars, scientists must first solve one of space exploration’s biggest challenges: propulsion. Chemical rockets, used to launch spacecraft into ...