07.28.11 - SOHO and EPOXI combined forces to provide observations on Comet Hartley 2 -- which appears to be an irregular comet, belching chunks of ice and losing water at a surprisingly fast pace.
06.16.11 - NASA's EPOXI mission found that Comet Hartley 2 is a hyperactive little comet, spewing out more water than most other comets its size.
05.17.11 - At the heart of every comet lies a remnant of the dawn of the solar system. However, data reveals that comet Hartley-2's core is not uniform.
11.05.10 - This video clip was compiled from images taken by NASA's EPOXI mission spacecraft during its flyby of comet Hartley 2 on Nov. 4.
11.04.10 - NASA's EPOXI mission successfully flew by comet Hartley 2 at about 7 a.m. PDT (10 a.m. EDT) today, and the spacecraft has begun returning images.
11.04.10 - NASA's EPOXI mission successfully flew by comet Hartley 2 at about 7 a.m. PDT (10 a.m. EDT) today, and the spacecraft has begun returning images.
11.03.10 - Mission controllers at NASA's Jet Propulsion Laboratory in Pasadena, Calif., have relayed final instructions to their comet-bound spacecraft today, Nov. 3.
11.02.10 - Malcolm Hartley has seen a whole lot of the universe over the last 40 years, but he'd never had a close-up view of a comet named after him.
11.02.10 - NASA's EPOXI mission spacecraft steadily approaches its target, comet Hartley 2, as it completes its final flight-path adjustment.
11.01.10 - NASA will hold a series of news and educational events about the EPOXI mission's close encounter with comet Hartley 2.
11.01.10 - Images from NASA's EPOXI mission shows jets emanating from comet Hartley 2.
10.28.10 - A massive space-radar dish in Puerto Rico is providing an appetizing glimpse at a cometary target for a Nov. 4 encounter by NASA's EPOXI mission.
10.27.10 - NASA's EPOXI mission has successfully performed one of its final maneuvers as it prepares for a comet flyby on Nov. 4.
10.26.10 - NASA's EPOXI mission continues to close in on its target, comet Hartley 2, at a rate of 12.5 kilometers (7.8 miles) per second.
10.25.10 - Here are five quick facts about the EPOXI mission, scheduled to fly by comet Hartley 2 on Nov. 4, 2010.
10.21.10 - Scientists expected the unexpected during NASA's EPOXI mission flyby of comet Hartley 2. They just didn't expect the unexpected quite so unexpectedly.
10.19.10 - A comet that makes its closest approach to Earth this Wednesday, Oct. 20, will be scrutinized even more closely by a NASA spacecraft in a little over two weeks.
10.04.10 - Humanity's fifth close up of a comet nucleus is one month away - and counting down.
09.29.10 - NASA's EPOXI mission successfully performed a trajectory correction maneuver today. The maneuver refined the spacecraft's orbit for a flyby of comet Hartley 2 on Nov. 4.
06.28.10 - NASA's EPOXI spacecraft "hitched a ride" on Earth's gravity field and is now heading toward its appointment with comet Hartley 2 this fall.