NASA's New Horizons spacecraft is at Pluto's doorstep, following an incredible journey of nine years and 3 billion miles.
Four weeks from Tuesday—on July 14—New Horizons will make its closest approach to Pluto. The spacecraft will fly within 7,750 miles, inside the orbits of Pluto's five known moons. That's the approximate distance between Seattle and Sydney.
The supermassive black hole is 40 million times as massive as the sun and powers a quasar that existed 700 million years after the Big Bang.
The asteroid zoomed by Earth at a perfectly safe distance of around 1.8 million miles (2.9 kilometers).
Images show surprise changes to the spacecraft as it interacted with the atmosphere.
