The case of mistaken identity was quickly resolved, but astronomers say it shows the need for transparency around craft in ...

"Chemical rockets that we use today, even with the extra speed boost from flying by planets, or from swinging by the sun for ...

NASA has plans to launch the first deep space station for humans to live long-term. Is it a necessary step to Mars?

From hypothetical magnetic levitation trains and space elevators that aren't even attached to the ground, to very real space cannons tested in the 1960s, humans have come up with a lot o ...