Massive stars do not live long. There are several candidates for the biggest star in the universe. One of them, VY Canis Majoris, is over 1,500 times the width of the sun. If it were placed in our ...

You might think the space between stars is completely empty, but it’s actually packed with way more stuff than you’d expect. While most of it just whizzes right past us here on Earth (if we’re lucky), ...

Space is a near-perfect vacuum, which means there's no air to carry smells the way we experience them on Earth. Yet astronauts have reported different smells when returning from their space walks. How ...