description Nozomi Overview
Nozomi, called Planet-B before launch, was Japan's first Mars probe, launched by the Institute of Space and Astronautical Science in July 1998. A propellant shortage after launch forced a revised multi-year trajectory using lunar and Earth flybys, and later propulsion and electrical faults, attributed in part to solar-flare damage, left the spacecraft unable to brake into Mars orbit when it arrived in December 2003. Nozomi passed by Mars and remains in heliocentric orbit, ending the mission without achieving orbit.
help Nozomi FAQ
How good is Nozomi?
Nozomi scores 3.15/10 (Poor) on Lunoo, making it rated in the Space Mission category.
What are the best alternatives to Nozomi?
See our alternatives page for Nozomi for a ranked list with scores. Top alternatives include: Viking 1, Viking 2, Mars Global Surveyor.
How does Nozomi compare to Viking 1?
See our detailed comparison of Nozomi vs Viking 1 with scores, features, and an AI-powered verdict.
Is Nozomi worth it in 2026?
With a score of 3.15/10, Nozomi is a solid option in Space Mission. See all Space Mission ranked.
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