I'm sure the universe is full of intelligent life. It's just been too intelligent to come here.Arthur C. Clarke
Test Your Knowledge for science
Stephen Hawking has passed away but that's not a reason to turn your back on science. Don't let his demise be of waste - go, pick up the torch and continue his great work. Start with our questions to see where you are with all that. Do you know your nebula from your Neptune? Or are you talking out Uranus?