Latest The Johns Hopkins University Applied Physics Laboratory Stories

2011-06-16 09:42:30

The MESSENGER spacecraft successfully completed its first orbit-correction maneuver on June 15 to reset its periapsis altitude "” the lowest point of MESSENGER's orbit about Mercury relative to the planet's surface "” from 506 kilometers to approximately 200 kilometers. MESSENGER was 198 million kilometers (123 million miles) from Earth when the maneuver began at 3:40 p.m. EDT. Mission controllers at The Johns Hopkins University Applied Physics Laboratory (APL) in...

2008-05-02 11:05:00

The Johns Hopkins University Applied Physics Laboratory is sending a spacecraft closer to the sun than any probe has ever gone "“ and what it finds could revolutionize what we know about our star and the solar wind that influences everything in our solar system.NASA has tapped APL to develop the ambitious Solar Probe mission, which will study the streams of charged particles the sun hurls into space from a vantage point within the sun's corona "“ its outer atmosphere "“...

2008-03-19 17:50:00

The MESSENGER spacecraft delivered a critical deep-space maneuver today "“ 64 million miles (103 million kilometers) from Earth "“ successfully firing its large bi-propellant engine to change the probe's trajectory and target it for its second flyby of Mercury on October 6, 2008. This was the first trajectory-correction maneuver (TCM) to test the continuous slow rotation of the spacecraft throughout the burn, essential for the March 18, 2011, Mercury orbit-insertion (MOI)...

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