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  2. Mars cycler - Wikipedia

    en.wikipedia.org/wiki/Mars_cycler

    The only difference in these trajectories is the date in the synodic period in which the vehicle is launched from Earth. Earth–Mars cyclers with a multiple of seven synodic periods return to Earth at nearly the same point in its orbit and may encounter Earth and/or Mars multiple times during each cycle. VISIT-1 encounters Earth three times ...

  3. Geology of Mars - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Mars

    Generalised geological map of Mars [1] Mars as seen by the Hubble Space Telescope. The geology of Mars is the scientific study of the surface, crust, and interior of the planet Mars. It emphasizes the composition, structure, history, and physical processes that shape the planet. It is analogous to the field of terrestrial geology.

  4. Scientific information from the Mars Exploration Rover mission

    en.wikipedia.org/wiki/Scientific_information...

    Most compelling of all, the Mössbauer spectrometer in the RATted space showed compelling evidence of jarosite, an iron-(III) sulfate basic hydrate. Fairly rare, found on Earth and had been predicted that it might be found on Mars some day. This is a mineral that you got to have water around to make." Crossbedding features in rock "Last Chance"

  5. Mars Exploration Rover - Wikipedia

    en.wikipedia.org/wiki/Mars_Exploration_Rover

    NASA's Mars Exploration Rover (MER) mission was a robotic space mission involving two Mars rovers, Spirit and Opportunity, exploring the planet Mars. It began in 2003 with the launch of the two rovers to explore the Martian surface and geology ; both landed on Mars at separate locations in January 2004.

  6. Astronomy on Mars - Wikipedia

    en.wikipedia.org/wiki/Astronomy_on_Mars

    The maximum angular separation of the Earth and Moon varies considerably according to the relative distance between the Earth and Mars: it is about 25′ when Earth is closest to Mars (near inferior conjunction) but only about 3.5′ when the Earth is farthest from Mars (near superior conjunction). For comparison, the apparent diameter of the ...

  7. Composition of Mars - Wikipedia

    en.wikipedia.org/wiki/Composition_of_Mars

    [36] [37] Although the organic carbon was probably from Mars, it can all be explained by dust and meteorites that have landed on the planet. [38] [39] [40] Because much of the carbon was released at a relatively low temperature in Curiosity's Sample Analysis at Mars (SAM) instrument package, it probably did not come from carbonates in the ...

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  9. Orbit of Mars - Wikipedia

    en.wikipedia.org/wiki/Orbit_of_Mars

    Mars comes closer to Earth more than any other planet save Venus at its nearest—56 million km is the closest distance between Mars and Earth, whereas the closest Venus comes to Earth is 40 million km. Mars comes closest to Earth every other year, around the time of its opposition, when Earth is sweeping between the Sun and Mars. Extra-close ...

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