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  2. Venus - Wikipedia

    en.wikipedia.org/wiki/Venus

    Venus is the second planet from the Sun.It is a terrestrial planet and is the closest in mass and size to its orbital neighbour Earth.Venus has by far the densest atmosphere of the terrestrial planets, composed mostly of carbon dioxide with a thick, global sulfuric acid cloud cover.

  3. Observations and explorations of Venus - Wikipedia

    en.wikipedia.org/wiki/Observations_and...

    The planet's period of retrograde motion is 20 days on either side of the inferior conjunction. In fact, through a telescope Venus at greatest elongation appears less than half full due to Schröter's effect first noticed in 1793 and shown in 1996 as due to its thick atmosphere. [15] [16]

  4. Frege's puzzles - Wikipedia

    en.wikipedia.org/wiki/Frege's_puzzles

    The first problem considers the following sentences: Hesperus is Hesperus. Hesperus is Phosphorus . [2] Each of these sentences is true, since 'Hesperus' refers to the same object as 'Phosphorus' (the planet Venus which few months apart can be seen as the brightest star of morning or of evening). Nonetheless, (1) and (2) seem to differ in their ...

  5. Terrestrial planet - Wikipedia

    en.wikipedia.org/wiki/Terrestrial_planet

    A terrestrial planet, tellurian planet, telluric planet, or rocky planet, is a planet that is composed primarily of silicate, rocks or metals. Within the Solar System , the terrestrial planets accepted by the IAU are the inner planets closest to the Sun : Mercury , Venus , Earth and Mars .

  6. Geology of solar terrestrial planets - Wikipedia

    en.wikipedia.org/wiki/Geology_of_solar...

    Terrestrial planets are substantially different from the giant planets, which might not have solid surfaces and are composed mostly of some combination of hydrogen, helium, and water existing in various physical states. Terrestrial planets have a compact, rocky surfaces, and Venus, Earth, and Mars each also has an atmosphere. Their size, radius ...

  7. Outline of Venus - Wikipedia

    en.wikipedia.org/wiki/Outline_of_Venus

    The following outline is provided as an overview of and topical guide to Venus: . Venus – second planet from the Sun, orbiting it every 224.7 Earth days. It has the longest rotation period (243 days) of any planet in the Solar System and rotates in the opposite direction to most other planets.

  8. Fact check: Image falsely shows Mercury, Venus and Saturn ...

    www.aol.com/news/fact-check-image-falsely-shows...

    A Facebook post claims Mercury, Venus and Saturn aligned with the pyramids in Giza, Egypt. That purported phenomenon is made up. Fact check: Image falsely shows Mercury, Venus and Saturn aligned ...

  9. Terraforming of Venus - Wikipedia

    en.wikipedia.org/wiki/Terraforming_of_Venus

    The terraforming of Venus or the terraformation of Venus is the hypothetical process of engineering the global environment of the planet Venus in order to make it suitable for human habitation. [1] [2] [3] Adjustments to the existing environment of Venus to support human life would require at least three major changes to the planet's atmosphere ...