AstrotalkUK

Not for profit website/blog on astronomy, space and my writing

Episode 55: 4 August 2012: Mars Curiosity Rover

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Since the mid 1970s six spacecraft (Viking 1 & 2, Sojourner, Opportunity, Spirit and Phoenix)  have successfully landed on the surface of Mars. In probably the most audacious, breathtaking and risky space missions, in less than two days, another  Mars Curiosity Rover will arrive on Mars. Using a technique never used before, NASA has described the Entry Decent Landing as the seven minutes of terror.

Launched in November 2011, the arrival of Mars Curiosity will for the first time make a high precision landing which is so crucial to its primary scientific goal of finding evidence of earlier Martian environment that may have been suitable for life.

Also known as the Mars Science Laboratory (MSL) it will be supported by a pair of NASA satellites (Odyssey and Mars Reconnaissance Orbiter (MRO) already in Martian orbit. Mars has never been under so much human scrutiny. In addition to the still functioning Opportunity, a rover on the surface of Mars (launched in 2004) and the two NASA satellites, there is also the European Space Agency’s Mars Express is also in Martian orbit.

Dr Anita Sengupta is a member of the Entry Decent Landing and Advanced Technologies group at Jet Propulsion Laboratory. In this interview recorded on August 2nd via telephone from her office in JPL she captures the sheer exhilaration of the dramatic entry decent and landing phase  and describes her role in the Mars Curiosity rover mission.

 

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Mars Curiosity’s seven minutes of terror – in less than 3 minutes

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Mars curiosity
Mars curiosity entry, decent and descent from http://www.extremetech.com/

Mars Curiosity landing in a nutshell (less than 3 minutes audio below)  by Dr Anita Sengupta  from the Entry Decent & Landing and Advanced Technologies group at NASA Jet Propulsion Laboratory. Full interview in Episode 55 – tomorrow.

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Episode 39: March 19th 2011: Spacecraft Operations

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Scroll to the bottom for the audio and video.

Since the launch of Sputnik 1 in 1957, thousands of unmanned spacecraft have been launched, mostly to Earth orbit, but many have gone to the inner and outer planets, and four of them have pretty much left the Solar System altogether.

European Space Agency’s Mars Express spacecraft arrived at Mars in 2003 and is still operating almost a decade later. It is operated by people in a profession initiated by the space age itself. Spacecraft Operations Engineers are the individuals who quietly take over the responsibility of spacecraft after the nerve wrenching excitement of the launch is over.

Thomas Ormston, a Spacecraft Operations Engineer for VEGA Space GmbH, working at the European Space Operations Centre on the European Space agency’s Mars Express mission describes in this episode the steps involved in controlling Mars Express from over one hundred million miles from Earth.

The Hubble Space Telescope is the single instrument that has probably contributed more to science in the last decade than any other. Its success is not the size of its 2.4m mirror, there are many larger telescopes on Earth but its location.

Many amateur astronomers have captured images of Mars using a webcam. Such images are usually tiny but with integration techniques a surprising amount of surface details is visible. What would it be like if you could put that webcam in Martian orbit? Thomas and his colleagues have done just that.

Several ESA spacecraft have an attached Visual Monitoring Cameras (VMC),  usually installed for a very specific purpose. Mars Express had one to monitor the release of Beagle 2, after that it was switched off. Thomas describes the details behind the project that reactivated the camera in a paper published online and the fascinating video compiled from 600 images taken by the VMC webcam during the 7 hour Martian orbit on 27th May 2010. It continues to take images which are posted here.

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Today’s quote from John Lennon is about the critical importance of the role of human understanding in interpreting the real world, even when you have all the evidence that you could possible desire.

Reality leaves a lot to the imagination

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Audio

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Episode 39: March 19th 2011 – Spacecraft Operations from AstrotalkUK on Vimeo.