by Staff Writers
Paris (ESA) Aug 07, 2012
This morning at 7:14 CEST, ESA's Mars Express acquired signals from NASA's Mars Science Laboratory as it delivered the car-sized Curiosity rover onto the Red planet's surface. ESA's New Norcia tracking station also picked up signals directly from the NASA mission, 248 million km away at Mars.
A key step was completed today in ESA's ongoing support to NASA's Mars Science Laboratory (MSL) mission. Signals recorded by Mars Express during MSL's entry and descent were successfully received at ESOC, ESA's European Space Operations Centre, Darmstadt, Germany.
The open-loop recording of radio Doppler and signal spectrum transmitted by the NASA mission were stored on Mars Express and then downloaded to Earth starting at 08:15 CEST.
The recorded signals were transferred to NASA's Jet Propulsion Laboratory, Pasadena, California, for analysis immediately upon receipt at ESOC. Similar direct-to-Earth recordings made at ESA's New Norcia ground station in Australia were also sent to NASA.
Curiosity's descent was also tracked by NASA's own Odyssey and Mars Reconnaissance Orbiter (MRO) spacecraft; confirmation of touchdown was provided by Odyssey directly to NASA at 07:31 CEST.
ESA welcomes new friend at Mars
Mars Express picked up MSL signals about 10 minutes before it entered the atmosphere, travelling at 21 000 km/h, for its critical descent and landing phase.
"We tracked MSL for about 28 minutes then lost contact as expected just a few moments before Curiosity's touchdown in Gale Crater," said Michel Denis, Mars Express Spacecraft Operations Manager.
"NASA now have this valuable data and everyone here is delighted to have helped support Curiosity's arrival at Mars."
The signal recordings made by Mars Express and New Norcia station include information on MSL's velocity and direction. They record the sequential critical events during descent, including parachute deployment, heat shield separation and rover separation.
They will prove valuable to scientists as they reconstruct MSL's descent profile, helping to improve and refine models of the martian atmosphere and assess landing accuracy.
The signals recorded by Mars Express will be automatically downloaded two more times later today via New Norcia and ESA's Cebreros station, in Spain, to ensure redundancy.
ESA's first step in continuing Curiosity support
Then, ESA will offer a standby capability to provide dedicated support at short notice, if requested by NASA, by relaying data from Curiosity to Earth.
This could become necessary if Odyssey or MRO were to experience any technical problems, for example.
ESA's tracking station network can support NASA missions, due in part to long-standing technical and operational cooperation between the two agencies.
"Supporting Curiosity is an excellent example of inter-agency cooperation not only on Earth but also in deep space," said Manfred Warhaut, ESA's Head of Mission Operations.
"No one likes going to Mars on their own; it takes cooperation and partnership to reduce risk and boost scientific return on investment."
Mars Express at ESA
Mars News and Information at MarsDaily.com
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'Enormous step forward' as NASA lands rover on Mars
Pasadena, California (AFP) Aug 6, 2012
NASA has successfully landed its $2.5 billion Mars Science Laboratory and Curiosity rover on the surface of the Red Planet, breaking new ground in US-led exploration of an alien world. The one-ton rover is the largest ever sent to Mars, and its high-speed landing was the most daring to date, using a never before tested rocket-powered sky crane to lower the six-wheeled vehicle gently to the p ... read more
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