With just a click, you're watching NASA astronauts Randy Bresnik and Mark Vande Hei spacewalk outside the International Space Station.

They have a day's worth of work ahead of them on their EVA - or Extra Vehicular Activity - the official name for a spacewalk. The first of three, they will be fixing and tightening up some equipment on the platform of the Destiny module and more.

Enjoy the live conversation between the Astronauts and their Ground Control specialist who leads them through their tasks and their regular safety checks. Plus, a NASA narrator steps in every now and then to take questions from Twitter! Enjoy!

Photo Credits: iStockphoto, 1971yes/Getty Images, Thinkstock, STS-117 Shuttle Crew/NASA, NASA