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  2. Stars on Mars - Wikipedia

    en.wikipedia.org/wiki/Stars_on_Mars

    Stars on Mars is an American reality competition series that premiered on Fox on June 5, 2023. Format [ edit ] Stars on Mars features celebrities living together in a base camp designed to simulate living on Mars (actually located in Coober Pedy, Australia ).

  3. Astronomy on Mars - Wikipedia

    en.wikipedia.org/wiki/Astronomy_on_Mars

    Mars has an axial tilt of 25.19°, quite close to the value of 23.44° for Earth, and thus Mars has seasons of spring, summer, autumn, winter as Earth does. As on Earth, the southern and northern hemispheres have summer and winter at opposing times. However, the orbit of Mars has significantly greater eccentricity than that of Earth.

  4. Mars - Wikipedia

    en.wikipedia.org/wiki/Mars

    Mars is the fourth planet from the Sun. The surface of Mars is orange-red because it is covered in iron (III) oxide dust, giving it the nickname " the Red Planet ". [21] [22] Mars is among the brightest objects in Earth's sky, and its high-contrast albedo features have made it a common subject for telescope viewing.

  5. Moons of Mars - Wikipedia

    en.wikipedia.org/wiki/Moons_of_Mars

    Ares, the god of war, was known to the Romans as Mars . Compared to the Earth 's Moon, the moons Phobos and Deimos are small. Phobos has a diameter of 22.2 km (13.8 mi) and a mass of 1.08 × 10 16 kg, while Deimos measures 12.6 km (7.8 mi) across, with a mass of 1.5 × 10 15 kg. Phobos orbits closer to Mars, with a semi-major axis of 9,377 km ...

  6. History of Mars observation - Wikipedia

    en.wikipedia.org/wiki/History_of_Mars_observation

    On October 13, 1590, the German astronomer Michael Maestlin observed an occultation of Mars by Venus. [24] One of his students, Johannes Kepler, quickly became an adherent to the Copernican system. After the completion of his education, Kepler became an assistant to the Danish nobleman and astronomer, Tycho Brahe.

  7. Timekeeping on Mars - Wikipedia

    en.wikipedia.org/wiki/Timekeeping_on_Mars

    Definition of year and seasons. The length of time for Mars to complete one orbit around the Sun in respect to the stars, its sidereal year, is about 686.98 Earth solar days (≈ 1.88 Earth years), or 668.5991 sols. Because of the eccentricity of Mars' orbit, the seasons are not of equal length.

  8. Orbit of Mars - Wikipedia

    en.wikipedia.org/wiki/Orbit_of_Mars

    Mars has an orbit with a semimajor axis of 1.524 astronomical units (228 million km) (12.673 light minutes), and an eccentricity of 0.0934. [1] [2] The planet orbits the Sun in 687 days [3] and travels 9.55 AU in doing so, [4] making the average orbital speed 24 km/s. The eccentricity is greater than that of every other planet except Mercury ...

  9. Life on Mars - Wikipedia

    en.wikipedia.org/wiki/Life_on_Mars

    F-type main-sequence star systems. v. t. e. The possibility of life on Mars is a subject of interest in astrobiology due to the planet 's proximity and similarities to Earth. To date, no proof of past or present life has been found on Mars.