Felix Baumgartner’s attempt to free fall through the atmosphere at supersonic speeds is due to begin today. The Red Bull Stratos team will be streaming the event for free on YouTube starting from 8:30AM ET, with the launch window extending to 11:00AM ET, but it has now been delayed to 1:30PM ET (see update below). Baumgartner’s jump marks the first attempt that a human being has jumped from an altitude of 120,000 feet outside of a craft, with the previous record achieved in 1960 at an height of 102,800 feet. Weather conditions are listed as being "favorable" for a launch, so the record-breaking attempt should go ahead as scheduled. Make sure you tune into the embedded stream shortly to see history in the making.
Update: According to the Red Bull Stratos site, weather conditions have improved and Felix Baumgartner's suit up procedure is complete. They are now preparing to launch at 1:30PM ET, which can been seen live below.
Update 2: The jump has been cancelled for the day due to high winds. The jump's official site doesn't yet have any more details on when the next attempt might take place.