After a 10-year journey, NASA's New Horizons spacecraft sped past Pluto for just a few short hours in July 2015. It was going far too fast to enter an orbit around the dwarf planet—let alone land on it—but along the way it grabbed some pretty amazing photos of this mysterious world.
It is harder to learn to fly a second time. Virgin Galactic, the private spaceflight firm headed by billionaire Richard Branson, lost its first SpaceShipTwo in a pilot-caused crashed in 2014, setting back dreams of passenger spaceflight. The new SpaceShipTwo, named VSS Unity (and not SpaceShipThree), was unveiled in February. Today, slung beneath the wing of its WhiteKnightTwo mothership Eve, Unity took to the sky for its second-ever flight.