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Does the earth revolve around the sun?

My friend and I had a discussion about this topic. We agreed that the earth revolved around the sun but he argued that earth revolved around the center of the sun itself while I argued that the central axis of rotation was within the sun but not at it's exact center and in fact the sun itself rotated around the central axis also.

If anyone is able to clarify the issue with either logical explanation or a link to a reputable site, it would be greatly appreciated!

22 Answers

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  • 1 decade ago
    Favorite Answer

    Orbiting objects rotate around their mutual center of gravity (barycenter).

    In theory, the Earth and the Sun rotate around the barycenter, which would not be the exact center of the Sun's mass. Also in theory, the Sun and Jupiter orbit a barycenter that is outside the Sun because of Jupiter's large mass.

    ► Due to the interacting gravitational effects of all the planets, the exact barycenter of the Sun and any one planet would be quite difficult to determine.

    (I performed the calculation: If the Earth-Sun orbit was unaffected by the rest of the solar system's gravity, its barycenter would be about 449 kilometers (279 miles) from the center of the Sun's mass in the direction of the Earth. The Earth's orbit is not perfectly circular so this number would vary a little during the year.)

    The source below gives an excellent animation of how orbits work.

    .

  • 4 years ago

    Earth Revolves Around The Sun

  • Anonymous
    6 years ago

    This Site Might Help You.

    RE:

    Does the earth revolve around the sun?

    My friend and I had a discussion about this topic. We agreed that the earth revolved around the sun but he argued that earth revolved around the center of the sun itself while I argued that the central axis of rotation was within the sun but not at it's exact center and in fact the sun itself...

    Source(s): earth revolve sun: https://tr.im/fyJHl
  • 6 years ago

    Everyone who has already answered, besides Khayyam, Matt Weridlastname, Waizz, & Andrew, is correct. However, you could take this a step further! The Sun rotates around the barycenter of the Milky Way Galaxy, with this system dominated by (what we believe to be,because we can't see it) a supermassive black hole near this barycenter. The Milky Way Galaxy is in a very eccentric "orbit" around the Andromeda Galaxy, which we'll collide with in billions of years. Both of these galaxies and many others orbit around the barycenter of our Local Group. Our Local Group orbits around the barycenter of the Virgo Supercluster, along with many other groups. The Virgo Supercluster is in a very eccentric orbit "around" The Great Attractor, (we're actually "just" flying towards it at an alarming rate), which we haven't been able to name because WE HAVE NO IDEA what it is! So, yeah! You could probably figure out the barycenter of these things only whatever level of "orbit" you want, but n-body calculations (the method for determining the barycenter of our Solar System influenced by all of the bodies within it) more or less require a supercomputer once the number of bodies exceeds 5 if you're doing them in 3 dimensions. Go to the Wiki page I sourced, and watch the video. It's kinda cool. Kinda shows how our solar system coalesced too.

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  • RickB
    Lv 7
    1 decade ago

    You are correct. A pair of bodies in space revolve around their mutual center of gravity, called the barycenter. The barycenter's offset, compared to the separation of the bodies, is in the same proportion as the bodies' masses. The sun is 333,000 times as massive as the earth, which means the earth/sun barycenter is 1/330,000 of the distance from the sun's center to the earth's center, or about 280 miles from the center of the sun -- completely insignificant, as your average tiny bump on the sun's surface is bigger than that anyway.

    But that's just considering the earth and sun as isolated bodies. By far the biggest contributor to the sun's "wobble" is the planet Jupiter.

  • Anonymous
    1 decade ago

    Earth, which is our base from which we look into space, is constantly moving. Understanding this movement is one of the most useful and important things in astronomy.

    The earth orbits the sun in an elliptical orbit and the moon orbits the earth with the same kind of orbit. Looking down from the north pole, the earth spins in a counterclockwise direction on an imaginary line called its axis once every day. This accounts for the fact that the sun rises in the east and sets in the west. The earth’s axis is tilted with respect to the plane of its orbit at an angle of about 23.4 degrees. If we position ourselves high above the north pole, we would see that the earth orbits the sun in a counterclockwise motion, coming to the same position among the stars every 365.26 earth days. We would also see that the moon also orbits the earth in a counterclockwise motion.

  • Tom S
    Lv 7
    1 decade ago

    With any two objects gravitationally bound to each other, they each technically revolve about the barycenter (center of gravity) of the system. In the case of the Sun and Earth that point would be very close to, but not exactly the gravitational center of the Sun.

  • 1 decade ago

    Well, you're correct; but, the *effect* of Earth's pull on the sun wouldn't be noticable, really... but, logically, the Earth *would* make the sun wobble a bit, so there's probably a spot within the solar core that both the Earth and Sun truly orbit about.

  • 1 decade ago

    yes, the earth does revolve around the sun as well as the seven other planet in our solar system (Pluto is no longer considered a planet). due to the high gravitational force the sun pulls all the planets around it. this makes them move in a particular orbit rather then collide onto each other.

  • Anonymous
    7 years ago

    First of all, saying the planets go around the Sun is just another way of saying the planets are in orbit around the Sun.

    Planets orbit the sun because it has a large pull of gravity; there are planets that orbit earth and the moon too because of the pull of gravity.

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