New Horizons is alive and well and beyond the Pluto system. On Wednesday, scientists began releasing close-up images of geology on this distant ice world.
Titan may be a large moon - its name even implies it - but it's still dwarfed by its parent planet, Saturn. Beautiful image from the Cassini spacecraft.
Astronomers see a bridge of dark matter stretching from our Local Group to the Virgo galaxy cluster. It's bound on each side by vast bubbles devoid of galaxies.
New Horizons' data will take 4.5 hours to reach Earth. The radio signals will be weak, practically whispers. Afterwards, New Horizons data is expected to take up to a year to transmit fully back to Earth.
Guide and timetable to this week's exciting events as New Horizons spacecraft encounters Pluto! Countdown on NASA TV begins 7:30 EDT (11:30 UTC) Tuesday.