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  2. Free-return trajectory - Wikipedia

    en.wikipedia.org/wiki/Free-return_trajectory

    Sketch of a circumlunar free return trajectory (not to scale), plotted on the rotating reference frame rotating with the moon. (Moon's motion only shown for clarity) In orbital mechanics, a free-return trajectory is a trajectory of a spacecraft traveling away from a primary body (for example, the Earth) where gravity due to a secondary body (for example, the Moon) causes the spacecraft to ...

  3. Tianwen-3 - Wikipedia

    en.wikipedia.org/wiki/Tianwen-3

    Tianwen-3 (Chinese: 天问三号) is a planned Mars sample-return mission by China which would send two spacecraft (an orbiter/Earth-returner and a lander/ascent-vehicle) via two separate launches to Mars. Together, the two spacecraft will seek to obtain samples of Martian rocks and soil and then return the cached samples to Earth. [1]

  4. Return to Mars - Wikipedia

    en.wikipedia.org/wiki/Return_to_Mars

    Jamie Fox Waterman - mission director, geologist. He is the main character of the "Mars" novels by Ben Bova, drives the discovery of microbial life on Mars, as well as of a distant cliff dwelling. Waterman seems to have a connection to Mars, as connections between his Navajo beliefs and the Red Planet become entangled.

  5. NASA rethinks plan to return rare Mars samples to Earth - AOL

    www.aol.com/nasa-looks-ways-return-martian...

    Mars Sample Return will be one of the most complex missions NASA has ever undertaken. The bottom line is, an $11 billion budget is too expensive, and a 2040 return date is too far away ...

  6. Mars to Stay - Wikipedia

    en.wikipedia.org/wiki/Mars_to_Stay

    Concept for NASA Design Reference Mission Architecture 5.0 (2009). Mars to Stay missions propose that astronauts sent to Mars for the first time should intend to remain there. . Unused emergency return vehicles would be recycled into settlement construction as soon as the habitability of Mars becomes evident to the initial pionee

  7. Human mission to Mars - Wikipedia

    en.wikipedia.org/wiki/Human_mission_to_Mars

    The lowest energy transfer to Mars is a Hohmann transfer orbit, a conjunction class mission which would involve a roughly 9-month travel time from Earth to Mars, about 500 days (16 mo) [citation needed] at Mars to wait for the transfer window to Earth, and a travel time of about 9 months to return to Earth.

  8. Mars Exploration Program - Wikipedia

    en.wikipedia.org/wiki/Mars_Exploration_Program

    Mars Exploration Program (MEP) is a long-term effort to explore the planet Mars, funded and led by NASA.Formed in 1993, MEP has made use of orbital spacecraft, landers, and Mars rovers to explore the possibilities of life on Mars, as well as the planet's climate and natural resources. [1]

  9. Perseverance (rover) - Wikipedia

    en.wikipedia.org/wiki/Perseverance_(rover)

    The rover took 29 weeks to travel to Mars and made its landing in Jezero Crater on February 18, 2021, to begin its science phase. [78] After May 17, 2022, the rover will move uphill and examine rocks on the surface for evidence of past life on Mars. On its return downhill, it will collect sample rocks to be retrieved and examined by future ...