NASA’s Twin Spirit and Opportunity Probes Leave Lasting Legacy 20 Years Later

The two spacecraft landed on Mars in January 2004, giving scientists the first evidence the red planet once held water.

Jack Daleo

Thursday, January 25, 2024 at 04:00 PM ET

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An artist’s concept depicts one of the twin rovers on the Martian surface. [Courtesy: NASA]

Key Takeaways:

NASA's Spirit and Opportunity rovers, designed for 90 days, operated for years, fundamentally transforming Mars exploration and scientific understanding.
They provided definitive proof of past water on Mars, discovering evidence of fresh water, hot springs, and diverse water environments, marking a significant paradigm shift.
Their groundbreaking success and operational experience paved the way for subsequent advanced Mars missions, including Curiosity, Perseverance, and the Ingenuity helicopter.
The twin rovers' legacy continues to inspire new generations of scientists and engineers, directly influencing current and future human and robotic exploration of Mars.

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Two decades ago, a pair of NASA rovers changed the way scientists study Mars and the solar system forever.

January marks the 20th anniversary of twin rovers Spirit and Opportunity’s arrival on the Martian surface, where the vehicles searched for the first evidence of water on the red planet. Designed to last 90 days, Spirit was active until 2010, while Opportunity’s final communication came 15 years after landing.