Take a sneak peek at Pluto

As NASA’s New Horizons probe closes in on Pluto, the Hubble Space telescope has been scouting its retinue of five known moons, discovering that at least two are tumbling chaotically in the complex gravity of the dwarf planet and its large moon, Charon, researchers said Wednesday.

Barreling toward a July 14 flyby of Pluto, NASA’s New Horizons spacecraft has returned its first color image of the distant world and its moon Charon, whetting the appetites of scientists as the probe prepares to begin taking the best-ever photos of the Pluto system beginning next month.

New Horizons project manager Glen Fountain, a veteran of nearly 50 years at the Johns Hopkins University Applied Physics Laboratory, told the Pluto probe’s team to live in the moment for Tuesday’s historic flyby, but look out for last-minute snags.