The long road to Mars – Physics World
Mars Opposition | Mars in our Night Sky – NASA's Mars Exploration Program
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Timekeeping on Mars - Wikipedia
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2017-2019: Mars Observing Year with a Perihelic Opposition, July 27, 2018 – When the Curves Line Up
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Mars at opposition shines extra bright in the night sky tonight | Space
AI Copernicus 'discovers' that Earth orbits the Sun
Hohmann transfer orbit diagram | The Planetary Society
Orbit of Mars - Wikipedia
ESA - Close encounters with Mars
How long is a day on Mars?
How far away is Mars, why is the planet red and how long does it take to get there?
Mars Alert: Why Three Spacecraft Must Leave For The Red Planet Within Weeks Or Miss Their Chance
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Mars orbit
