Exploration of Mars

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Exploration of Mars

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The scientific exploration of Mars through robotic spacecraft, revealing its geological history.

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2Day Chrono-Wiki & Primary Historical Archives

Origins & Early Life

The planet Mars has been explored remotely by spacecraft. Probes sent from Earth, beginning in the late 20th century, have yielded a large increase in knowledge about the Martian system, focused primarily on understanding its geology and habitability potential. Engineering interplanetary journeys is complicated and the exploration of Mars has experienced a high failure rate, especially the early attempts. Roughly sixty percent of all spacecraft destined for Mars failed before completing their missions, with some failing before their observations could begin. Some missions have been met with unexpected success, such as the twin Mars Exploration Rovers, Spirit and Opportunity, which operated for years beyond their specification.

Career & Major Achievements

There are two functional rovers on the surface of Mars, the Curiosity and Perseverance, both operated by the American space agency NASA. Perseverance was accompanied by the Ingenuity helicopter, which scouted sites for Perseverance to study before the helicopter's mission ended in 2024. The Zhurong rover, part of the Tianwen-1 mission by the China National Space Administration (CNSA) was active until 20 May 2022 when it went into hibernation due to approaching sandstorms and Martian winter; the rover was expected to wake up from hibernation in December 2022, but since April 2023 it has not moved and is presumed to be permanently inactive. There are six orbiters surveying the planet: Mars Odyssey, Mars Express, Mars Reconnaissance Orbiter, the Trace Gas Orbiter, the Hope Mars Mission, and the Tianwen-1, which have contributed massive amounts of information about Mars. In April 2024, NASA selected several companies to begin studies on providing commercial services to further enable robotic science on Mars.

Enduring Legacy & Impact

Mars has long been the subject of human interest. Early telescopic observations revealed color changes on the surface that were attributed to seasonal vegetation and apparent linear features were ascribed to intelligent design. Further telescopic observations found two moons, Phobos and Deimos, polar ice caps and the feature now known as Olympus Mons, the Solar System's tallest mountain. The discoveries piqued further interest in the study and exploration of the red planet. Mars is a rocky planet, like Earth, that formed around the same time, yet with only half the diameter of Earth, and a thin atmosphere; it has a cold and desert-like surface.

Chronological Milestones & Life Events

1. 2022: 2022 Milestone — The Zhurong rover, part of the Tianwen-1 mission by the China National Space Administration (CNSA) was active until 20 May 2022 when it went into hibernation due to approaching sandstorms and Martian winter; the rover was expected to wake up from hibernation in December 2022, but since April 2023 it has not moved and is presumed to be permanently inactive.
2. 2024: 2024 Milestone — Perseverance was accompanied by the Ingenuity helicopter, which scouted sites for Perseverance to study before the helicopter's mission ended in 2024.

Historical Fact-Check Quiz: Exploration of Mars

True or False: “The initial attempts to send probes to Mars were highly successful with a low failure rate.”

Answer (FALSE ❌): Early exploration was fraught with difficulty; roughly sixty percent of all spacecraft destined for Mars failed before completing their missions.

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Frequently Asked Questions about Exploration of Mars