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  • Thumbnail for Earth's orbit
    Earth orbits the Sun at an average distance of 149.60 million km (8.317 light minutes, 92.96 million mi) in a counterclockwise direction as viewed from...
    17 KB (1,834 words) - 05:28, 17 March 2024
  • Thumbnail for Sun
    on Earth. The Sun has been an object of veneration in many cultures. It has been a central subject for astronomical research since antiquity. The Sun orbits...
    171 KB (18,867 words) - 13:46, 2 June 2024
  • Thumbnail for Lagrange point
    bodies. There are five Lagrange points for the SunEarth system, and five different Lagrange points for the Earth–Moon system. L1, L2, and L3 are on the line...
    50 KB (5,703 words) - 01:16, 2 June 2024
  • Thumbnail for Sun-synchronous orbit
    complete revolution each year, so it always maintains the same relationship with the Sun. A Sun-synchronous orbit is useful for imaging, reconnaissance, and...
    14 KB (1,629 words) - 00:30, 22 March 2024
  • about four extraterrestrials who are on an expedition to Earth, the third planet from the Sun, which they consider to be a very insignificant planet. The...
    38 KB (2,949 words) - 20:45, 2 June 2024
  • Thumbnail for Position of the Sun
    position of the Sun in the sky is a function of both the time and the geographic location of observation on Earth's surface. As Earth orbits the Sun over the...
    24 KB (3,336 words) - 21:52, 28 May 2024
  • Unsolved problem in astronomy: How can the early Earth have had liquid water if the Sun's output is theorized to have been only 70% as intense as it is...
    30 KB (3,668 words) - 14:50, 21 April 2024
  • Thumbnail for Future of Earth
    the possibility of a near-Earth supernova—a massive stellar explosion within a 100-light-year (31-parsec) radius of the Sun. Other large-scale geological...
    98 KB (10,921 words) - 01:48, 30 May 2024
  • Thumbnail for Axial tilt
    Axial tilt (redirect from Earth axis)
    perpendicular to the imaginary plane through which the Earth moves as it revolves around the Sun; the Earth's obliquity or axial tilt is the angle between these...
    33 KB (3,100 words) - 11:33, 25 May 2024
  • Berardinelli. "Heaven and Earth". Retrieved December 22, 2010. Roger Ebert (December 24, 1993). "Heaven And Earth". Chicago Sun-Times. Archived from the...
    10 KB (936 words) - 14:30, 17 April 2024
  • excluded Earth, plus the Sun and Moon. Although the Greek term planet applied mostly to the five 'wandering stars', the Ancients included the Sun and Moon...
    57 KB (6,015 words) - 06:20, 23 May 2024
  • Earth 2, was released in January 2023, serving as a prequel. In the year 2058, an anomalously expanding red giant Sun threatens to engulf the Earth within...
    36 KB (3,999 words) - 01:08, 15 May 2024
  • nostalgic childhood reminisces, Lightbulb Sun and the first part of Last Chance To Evacuate Planet Earth, Where We Would Be. So there are kind of groups...
    23 KB (2,258 words) - 21:15, 6 April 2024
  • Thumbnail for Kepler's laws of planetary motion
    = G m Earth r Sun , Earth − 2 r ^ Sun , Earth + G m Moon r Sun , Moon − 2 r ^ Sun , Moon r ¨ Earth = G m Sun r Earth , Sun − 2 r ^ Earth , Sun + G m Moon...
    57 KB (8,352 words) - 20:00, 20 May 2024
  • Thumbnail for Geocentric model
    description of the Universe with Earth at the center. Under most geocentric models, the Sun, Moon, stars, and planets all orbit Earth. The geocentric model was...
    75 KB (8,814 words) - 10:18, 2 June 2024
  • Thumbnail for Astrarium
    "Tractatus astarii" Annosphere An electro-mechanical model of the earth/sun relationship. Science and Society Picture Library: - a picture of De Dondi’s...
    7 KB (751 words) - 03:43, 11 December 2023
  • time standard based on Earth's rotation. While originally it was mean solar time at 0° longitude, precise measurements of the Sun are difficult. Therefore...
    21 KB (2,366 words) - 21:55, 21 April 2024
  • Thumbnail for Age of Earth
    estimated that the Sun is about 20 million years old. Geologists such as Lyell had difficulty accepting such a short age for Earth. For biologists, even...
    45 KB (5,444 words) - 18:45, 23 February 2024
  • Thumbnail for Solar System
    Solar System (redirect from Sun system)
    objects that orbit the Sun are the eight planets. In order from the Sun, they are four terrestrial planets (Mercury, Venus, Earth and Mars); two gas giants...
    214 KB (21,511 words) - 00:34, 5 June 2024
  • Thumbnail for Ecliptic
    ecliptic plane is the orbital plane of Earth around the Sun. From the perspective of an observer on Earth, the Sun's movement around the celestial sphere...
    27 KB (2,660 words) - 22:40, 15 April 2024
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