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  2. Category:Video games set on Mars - Wikipedia

    en.wikipedia.org/wiki/Category:Video_games_set...

    This is a category for any video game where the player controls actions taking place, at least partially, on Mars. The action must take place on the surface Mars itself, not simply in orbit above Mars. This includes any alternate universe Mars, such as after terraforming, or on a seemingly fantasical Mars, as long as it is in relation to Earth.

  3. Terraria - Wikipedia

    en.wikipedia.org/wiki/Terraria

    Terraria: Otherworld was a separate game in the series which was announced in February 2015 and planned for release later that year. [66] Otherworld tasked the player with trying to purify the world of the Corruption, which was to be achieved mainly by finding and activating "purifying towers" that push back the spread of the Corruption.

  4. Galactic year - Wikipedia

    en.wikipedia.org/wiki/Galactic_year

    The galactic year, also known as a cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. [1] One galactic year is approximately 225 million Earth years . [ 2 ]

  5. List of the most distant astronomical objects - Wikipedia

    en.wikipedia.org/wiki/List_of_the_most_distant...

    It had been determined that the stars were much farther away than the planets. Mars: Planet of the Solar System 1609 − 1619 2.6 AU when Mars is diametrically opposed to Earth Kepler correctly characterized Mars and Earth's orbits in the publication Astronomia nova. It had been conjectured that the fixed stars were much farther away than the ...

  6. Cosmic distance ladder - Wikipedia

    en.wikipedia.org/wiki/Cosmic_distance_ladder

    In such cases, the redshift of the host galaxy allows a determination of the Hubble constant. [22] This was the case for GW170817 , which was used to make the first such measurement. [ 25 ] Even if no electromagnetic counterpart can be identified for an ensemble of signals, it is possible to use a statistical method to infer the value of H 0 ...

  7. Terraforming of Mars - Wikipedia

    en.wikipedia.org/wiki/Terraforming_of_Mars

    This is an accepted version of this page This is the latest accepted revision, reviewed on 14 February 2025. Hypothetical modification of Mars into an Earth-like habitable planet This article is about the technological process. For the board game, see Terraforming Mars (board game). Artist's conception of the process of terraforming Mars. The terraforming of Mars or the terraformation of Mars ...

  8. List of Solar System extremes - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System_extremes

    Lowest Highest Lowest Highest Lowest Sun: N/A 5,000,000 K In a solar flare [33] 1240 K In a sunspot [34] Mercury: 3 kilometres (1.9 mi) Caloris Montes, northwest Caloris Basin rim mountains [35] [36] 723 K Dayside of Mercury [37] 89 K Permanently shaded polar craters [38] Venus: 11 kilometres (6.8 mi) Maxwell Montes, Ishtar Terra [39] [40] [41 ...

  9. List of galaxies - Wikipedia

    en.wikipedia.org/wiki/List_of_galaxies

    Galaxy (aka HIPASS J1131-31) was hidden behind a relatively fast-moving foreground star (TYC 7215-199-1) and became observable when the star moved aside. [citation needed] Galaxy, relatively nearby, is considered one of the most metal-poor ("extremely metal-poor" (XMP)), least chemically enriched, and seemingly primordial, galaxies known. [10] [11]