103P/Hartley 2 — comet, shown live in Cosmoscope, a real-time 3D map of the universe.
A hyperactive little peanut of a comet: EPOXI flew past in 2010 and found it spitting golf-ball-sized snowballs from carbon-dioxide jets at both ends.
Cosmoscope puts 103P/Hartley 2 at its true position in the solar system, computed from JPL-derived ephemeris and updated continuously. Open the live 3D view to see, in real time, how far 103P/Hartley 2 is from the Sun and from Earth right now, how many minutes or hours light takes to cross that gap, and how fast it is moving along its orbit. Scrub the timeline to place 103P/Hartley 2 where it was on any past date, or where it will be years from now.