I Am Astronaut Chris Hadfield, currently orbiting planet Earth.
My name is Chris Hadfield. I am an astronaut with the Canadian Space Agency who has been living aboard the International Space Station since December, orbiting the Earth 16 times per day.
You can view a pre-flight AMA I did here. If I don't get to your question now, please check to make sure it wasn't answered there already.
The purpose of all of this is to connect with you and allow you to experience a bit more directly what life is like living aboard an orbiting research vessel.
You can continue to support manned space exploration by following daily updates on Twitter, Facebook or Google+. It is your support that makes it possible to further our understanding of the universe, one small step at a time.
To provide proof of where I am, here's a picture of the first confirmed alien sighting in space.
Thanks everyone for the great questions! I have to be up at 06:00 tomorrow, with a heavy week of space science planned, so past time to drift off to sleep. Goodnight, Reddit!