Lockheed Martin unveils spacecraft ‘RV’ for human trips to Mars
People are serious about going to Mars
How gravity will make this new probe the fastest human-made object (VIDEO-PHOTOS)
What makes the probe so speedy?
NASA spotted a vast, glowing “Hydrogen Wall” at the edge of our solar system
NASA researchers are pretty sure that New Horizons, the probe that famously skimmed past Pluto in 2015, can see that boundary