ESA spacecraft records crucial NASA signals from Mars

Aug 06, 2012
Curiosity's first view of Mars. Credit: NASA

(Phys.org) -- 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.

"Congratulations to our NASA colleagues on a hugely successful landing,” said Paolo Ferri, ESA’s Head of Solar and Planetary Mission Operations. “The Mars Express team welcomes a new friend in the neighbourhood."

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.

New Norcia antenna. Credit: ESA

“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.

In the coming weeks, and the operations team at ESOC will perform several data relay overflights during the first phases of Curiosity’s mission on the surface of Mars.

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 on their own; it takes cooperation and partnership to reduce risk and boost scientific return on investment.”

Explore further: Cassini sees sunny seas on Titan

add to favorites email to friend print save as pdf

Related Stories

Mars Express supports dramatic landing on Mars

Jul 26, 2012

(Phys.org) -- On 6 August, NASA’s Mars Science Laboratory will make a spectacular landing to deliver the Curiosity rover to the Red Planet. ESA’s Mars Express will track the mission’s progress, ...

Australia is 'all ears' for Mars landing

Aug 02, 2012

(Phys.org) -- NASA's Mars Science Laboratory will land on Mars on Monday 6 August (AEST). The Canberra Deep Space Communication Complex, which CSIRO manages on behalf of NASA, will be the main tracking station for the landing. ...

Recommended for you

Cassini sees sunny seas on Titan

22 hours ago

(Phys.org) —As it soared past Saturn's large moon Titan recently, NASA's Cassini spacecraft caught a glimpse of bright sunlight reflecting off hydrocarbon seas.

Is space tourism safe or do civilians risk health effects?

Oct 30, 2014

Several companies are developing spacecraft designed to take ordinary citizens, not astronauts, on short trips into space. "Space tourism" and short periods of weightlessness appear to be safe for most individuals ...

An unmanned rocket exploded. So what?

Oct 30, 2014

Sputnik was launched more than 50 years ago. Since then we have seen missions launched to Mercury, Mars and to all the planets within the solar system. We have sent a dozen men to the moon and many more to ...

NASA image: Sunrise from the International Space Station

Oct 30, 2014

NASA astronaut Reid Wiseman posted this image of a sunrise, captured from the International Space Station, to social media on Oct. 29, 2014. Wiseman wrote, "Not every day is easy. Yesterday was a tough one. ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.