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Science

Bringing Mars back to Earth

Bringing Mars back to Earth
Newsexplored
29th July 2020
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The 'sky crane' is used to slow the rover's descent to Mars and lower it to the surface using cables.

The 'sky crane' is used to slow the rover's descent to Mars and lower it to the surface using cables.

A new rover built by Nasa and named Perseverance will land on Mars in February 2021 using the “sky crane” method. A giant parachute and rocket motors will slow the mission’s descent before the rover is lowered to the surface using cables.

Nasa's latest Mars rover is a six-wheeled robotic machine named Perseverance

Nasa's latest Mars rover is a six-wheeled robotic machine named Perseverance

Perseverance – a six-wheeled robotic machine with 23 cameras and a drill – will seek signs of ancient life in a large crater Jezero. It will collect rock and soil samples that look like they may have been altered by contact with microorganisms.

The Perseverance rover collects and stores samples of Martian soil and rocks in metal canisters, which it leaves behind on the surface

The rover will store its samples in metal canisters – but leave them behind on the Martian surface to continue its mission. Perserverance’s plutonium-based power supply could keep the rover trundling around Mars for 10 years or more.

A small robotic machine called the fetch rover collects the samples left behind by Perseverance

Later this decade – after 2026 – a second, smaller rover, to be built by the European Space Agency (Esa), will arrive on Mars. This “fetch rover” will travel across the surface picking up the sample canisters left behind by Perseverance.

The samples are fired out of the Martian atmosphere into orbit by a small rocket called the Mars Ascent Vehicle or MAV

The samples are fired out of the Martian atmosphere into orbit by a small rocket called the Mars Ascent Vehicle or MAV

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The canisters will be loaded into a protective container and placed into a small rocket – the Mars Ascent Vehicle or MAV. This will blast into the sky, placing the container into orbit around Mars.

The sample container is caught by the satellite return orbiter

The sample container is caught by the satellite return orbiter

The sample container will be met in orbit and caught by a European satellite. This “return orbiter” will act like a cargo ship, bringing the precious rock and soil specimens back to Earth.


The rock samples are carried back to Earth by the return orbiter and released into the atmosphere in a heavily-protected container

The rock samples are carried back to Earth by the return orbiter and released into the atmosphere in a heavily-protected container

We don’t expect the satellite to arrive home until at least 2031, by which time the sample container will have been packaged in a heavily protected capsule, to be sent into Earth’s atmosphere to land in North America.

Martian rock samples being studied in an Earth laboratory

Scientists will then study the rocks and soil using advanced techniques, including some that have yet to be invented because there should be enough material to investigate for decades ahead. The samples will shed light on Mars’ history and whether it has ever supported microbial lifeforms.

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Science
29th July 2020
Newsexplored @newsexploredweb

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