Today is the day that Felix Baumgartner was originally meant to jump out of a pressurized cabin being carried by a balloon up 23 miles above the surface of the planet. This jump is already a record-breaking jump even before he lands, with 120,000 feet / 36,576 meters between him and Earth breaking a record that's existed for more than 50 years. This jump that's being sponsored by Red Bull also has Baumgartner breaking another record - he's becoming the first human to break the sound barrier in freefall - that's an estimated 690 miles / 1,110 kilometers per hour. UPDATE: The jump has been delayed for today on account of gusty winds, cancelled until tomorrow at best. Seeya then!