Rosetta s Target Comet . ... Credit Copyright: ESA / Rosetta / MPS OSIRIS Team Explanation: The Rosetta spacecraft captured this remarkable series of 9 frames between March 27 and May 4, as it closed from 5 million to 2 million kilometers of its target comet. ... The comet's developing coma is actually visible by the end of the sequence, extending for some 1300 km into space. Rosetta is scheduled for an early August rendezvous with the comet's nucleus. ... NASA Official: Jay Norris. ...