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  2. Earth's orbit - Wikipedia

    en.wikipedia.org/wiki/Earth's_orbit

    The point towards which the Earth in its solar orbit is directed at any given instant is known as the "apex of the Earth's way". [4] [5] From a vantage point above the north pole of either the Sun or Earth, Earth would appear to revolve in a counterclockwise direction around the Sun. From the same vantage point, both the Earth and the Sun would ...

  3. Heliocentrism - Wikipedia

    en.wikipedia.org/wiki/Heliocentrism

    In this depiction of the Tychonic system, the objects on blue orbits (the Moon and the Sun) revolve around the Earth. The objects on orange orbits (Mercury, Venus, Mars, Jupiter, and Saturn) revolve around the Sun. Around all is a sphere of fixed stars, located just beyond Saturn.

  4. Sun - Wikipedia

    en.wikipedia.org/wiki/Sun

    According to a 2008 paper, Earth's orbit will have initially expanded to at most 1.5 AU (220 million km; 140 million mi) due to the Sun's loss of mass. However, Earth's orbit will then start shrinking due to tidal forces (and, eventually, drag from the lower chromosphere) so that it is engulfed by the Sun during the tip of the red-giant branch ...

  5. Heliocentric orbit - Wikipedia

    en.wikipedia.org/wiki/Heliocentric_orbit

    A heliocentric orbit (also called circumsolar orbit) is an orbit around the barycenter of the Solar System, which is usually located within or very near the surface of the Sun. All planets, comets, and asteroids in the Solar System, and the Sun itself are in such orbits, as are many artificial probes and pieces of debris. The moons of planets ...

  6. Free Typing Games: Games to Help You Back to School

    www.aol.com/news/2009-08-31-free-typing-games...

    We've collected the best free typing games from Games.com and around the web. Typer Shark. Typer Shark is an online game classic from Popcap games. In Typer Shark you command a dive to to search ...

  7. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    Thus, the Sun occupies 0.00001% (1 part in 10 7) of the volume of a sphere with a radius the size of Earth's orbit, whereas Earth's volume is roughly 1 millionth (10 −6) that of the Sun. Jupiter, the largest planet, is 5.2 AU from the Sun and has a radius of 71,000 km (0.00047 AU; 44,000 mi), whereas the most distant planet, Neptune, is 30 AU ...

  8. Geocentric model - Wikipedia

    en.wikipedia.org/wiki/Geocentric_model

    Two observations supported the idea that Earth was the center of the Universe. First, from anywhere on Earth, the Sun appears to revolve around Earth once per day. While the Moon and the planets have their own motions, they also appear to revolve around Earth about once per day.

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