Friday, October 2, 1998 Published at 18:45 GMT 19:45 UK
To boldly go where no Brits have gone before
Lifeless? Or just hidden below the surface?
Almost 170 years ago, Charles Darwin boarded HMS Beagle and began a journey that would change the way the world thinks.
Now a team of predominantly British scientists hopes to do justice to that heritage by going someway towards answering that fundamental question: Are we alone?
The tiny lander will then be dropped onto the surface of the red planet to pick up where others have left off in attempting to establish whether or not life has ever existed, or continues to exist on Mars.
Professor Colin Pillinger, lead scientist for Beagle 2 and head of the Planetary Science Research Institute at the Open University, said the results could be quite amazing.
"That means that conditions on Mars were very suitable for life to have developed."
The team behind Beagle 2 are facing an October 30 deadline to find £25m for the European Space Agency to accept the lander.
Launches are paid for through the general budget but on-board instruments must be financially self-supporting.
The UK's space agency, the British National Space Centre, has already committed all its current funds this year.
"But the Mars Express mission is a late entry into the European Space Agency's science programme.
"It came along after the UK had committed funds to other missions, such as next year's X-ray astronomy mission, XMM, and the comet lander Rosetta."
Beagle 2's team have turned elsewhere for their funding and have enlisted some of the leading names in British technology.
The Martin Baker Aircraft Company in Uxbridge, Middlesex, will construct the all-important entry descent and landing system and the Rutherford-Appleton Laboratory will be responsible for ensuring Beagle 2 can withstand wild swings in Mars' surface temperature.
Interest in extra-terrestrial life will always be strong, but the Beagle 2 team are working on the crest of a wave formed by Nasa's 1996 announcement that a Martian meteorite contained fossilised evidence of life.
They argued that the catchily named ALH84001 included evidence of Martian carbonates, indicators of life.
"The thing that is much more controversial about the Martian samples is whether or not they contain the real evidence of life," said Prof Pillinger.
"People claim to have seen fossils, others have argued that organic matter is there.
"There is a question that this material got into rocks on earth and what I am trying to do is go to Mars and avoid these questions of contamination."
Beagle 2 will be constructed to strict sterilisation standards to ensure that it does not carry these earth organisms to Mars.
Once it has landed, the tiny craft will open its petal-like solar panels to power instruments.
But the key piece of technology will be a robot mole.
It will scurry to nearby rocks and then burrow underground to take samples of Martian earth protected for millennia from the harsh atmosphere.
The earth will be entered into a mass spectrometer, an instrument that uses magnetic and electrical fields to determine the isotopes, molecules and composition of a sample.
These experiments may then point to chemical or organic compounds suggestive of life long since dead - or life still existing.
Beagle 2 is also designed to carry out a host of other valuable experiments.
"What I am convinced about is that the conditions on Mars are appropriate for life," said Prof Pillinger.
"It does not mean that life is there or that it was there.
"If we could make these first tentative steps to show that life forms are not unique, it brings closer the eventual discovery that life is universal.
"And I believe that should be the case because the elements of life, carbon, hydrogen, oxygen and nitrogen are four of the five most abundant elements that make up everything around us."
All computer images of Beagle 2 courtesy of the Planetary Sciences Research Institute.