Greetings, Earthling! If you have intercepted this signal, congratulations! You're about to launch off Earth and take a trip around the solar system... and BEYOND! 

In this week's Science Weekly, astronomer Mark Thompson is talking to Dan about the night sky and sleeping! What questions should we be asking about space - why is the universe expanding? Are we truly alone in the universe, or could there be an alien science podcast out there? Mark tells all. 

Your science questions are being answered! This week, you can find out why car windows fog up and why boomerangs come back to us after we throw them. Plus, Professor Pulsar has signed you up for a brand new class all about Mars, so I hope you brought your notebook. Attendance will be taken!