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  2. Orbit of Venus - Wikipedia

    en.wikipedia.org/wiki/Orbit_of_Venus

    Representation of Venus (yellow) and Earth (blue) circling around the Sun. Venus and its rotation in respect to its revolution. Venus has an orbit with a semi-major axis of 0.723 au (108,200,000 km; 67,200,000 mi), and an eccentricity of 0.007.

  3. Phases of Venus - Wikipedia

    en.wikipedia.org/wiki/Phases_of_Venus

    The orbit of Venus is 224.7 Earth days (7.4 avg. Earth months [30.4 days]). The phases of Venus result from the planet's orbit around the Sun inside the Earth's orbit giving the telescopic observer a sequence of progressive lighting similar in appearance to the Moon's phases. It presents a full image when it is on the opposite side of the Sun.

  4. Axial precession - Wikipedia

    en.wikipedia.org/wiki/Axial_precession

    Earth rotates (white arrows) once a day around its rotational axis (red); this axis itself rotates slowly (white circle), completing a rotation in approximately 26,000 years [1] In astronomy , axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis .

  5. Orbital pole - Wikipedia

    en.wikipedia.org/wiki/Orbital_pole

    The north orbital poles of the Solar System major planets all lie within Draco. [1] The central yellow dot represents the Sun's rotation axis north pole. [citation needed] Jupiter's north orbital pole is colored orange, Mercury's pale blue, Venus's green, Earth's blue, Mars's red, Saturn's magenta, Uranus's grey, and Neptune's lavender.

  6. Equation of the center - Wikipedia

    en.wikipedia.org/wiki/Equation_of_the_center

    Gives the equation of the center to order e 10. Morrison, J. (1883). On the computation of the eccentric anomaly, equation of the centre and radius vector of a planet, in terms of the mean anomaly and eccentricity. Monthly Notices of the Royal Astronomical Society, Vol. 43, p. 345. Gives the equation of the center to order e 12. Morrison, J ...

  7. The World Set Free ( Cosmos: A Spacetime Odyssey )

    en.wikipedia.org/wiki/The_World_Set_Free_(Cosmos:...

    The episode also examines the planet Venus to inspect the runaway greenhouse effect. [2] The episode's title alludes to H. G. Wells ' novel published in 1914, The World Set Free , where Wells predicts that humanity will develop destructive nuclear weapons , perpetuating a devastating global war and forcing the world to come to its senses to ...

  8. Diurnal motion - Wikipedia

    en.wikipedia.org/wiki/Diurnal_motion

    It is caused by Earth's rotation around its axis, so almost every star appears to follow a circular arc path, called the diurnal circle, [1] often depicted in star trail photography. The time for one complete rotation is 23 hours, 56 minutes, and 4.09 seconds – one sidereal day .

  9. Venus - Wikipedia

    en.wikipedia.org/wiki/Venus

    The highest point on Venus, Maxwell Montes, is therefore the coolest point on Venus, with a temperature of about 655 K (380 °C; 715 °F) and an atmospheric pressure of about 4.5 MPa (45 bar). [ 131 ] [ 132 ] In 1995, the Magellan spacecraft imaged a highly reflective substance at the tops of the highest mountain peaks, a " Venus snow " that ...