It’s one of those hitch hiking deals:

NASA’s Deep Impact/EPOXI spacecraft will fly past Earth this Sunday (June 27). Mission navigators have tailored this trajectory so the spacecraft can “hitch a ride” on Earth’s gravity field, which will help propel the mission toward its appointment with comet Hartley 2 this fall. At time of closest approach to Earth, the spacecraft will be about 30,400 kilometers (18,900 miles) above the South Atlantic.

“Earth is a great place to pick up orbital velocity,” said Tim Larson, the EPOXI project manager from NASA’s Jet Propulsion Laboratory in Pasadena, Calif. “This flyby will give our spacecraft a 1.5-kilometer-per-second [3,470 mph] boost, setting us up to get up close and personal with comet Hartley 2.”

Press release is here.

Comments

  1. #1 Birger Johansson
    June 27, 2010

    Off-Topic: a recent article I found at HuffPo: “Is the Universe Merely a Statistical Accident?2
    http://www.huffingtonpost.com/dr-larry-dossey/spiritual-living-is-the-u_b_621261.html