NASA Finishes Building Its Mars-bound Orion Spacecraft

Humanity is one step closer to reaching Mars. NASA finished up its Orion Spacecraft Thursday, and its preparing for a test flight on Dec. 4. When Orion launches in December, aboard a Delta IV Heavy rocket, it will complete a 4.5-hour, two-orbit test flight. The flight will really put Orion to the test. NASA says the spacecraft will return to Earth at speeds of more than 20,000 mph.