Q:

Which planets can be seen without a telescope?

A:

Quick Answer

Mercury, Venus, Mars, Jupiter and Saturn are the five planets that are visible without a telescope. These five planets were known to ancient astronomers long before the invention of telescopes. Some experts also include the Earth on the list of planets you can see with the naked eye.

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Which planets can be seen without a telescope?
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Full Answer

Ancient astronomers considered these five planets, along with the moon and the sun, to be the seven special celestial objects. This gave rise to the notion of seven heavens in many ancient religions. Ancient astronomers used the movements of the planets to track the seasons, decide when to plant crops and to predict the future.

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Related Questions

  • Q:

    How many rings does Venus have?

    A:

    Venus does not have any rings. The planet does not have rings because the temperature on Venus is too high for their formation. Rings are associated with the outer planets of Jupiter, Saturn, Neptune and Uranus

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  • Q:

    What is the gravitational pull of Uranus?

    A:

    The acceleration due to gravity on the surface of Uranus is 8.69 meters per second squared. The value of this acceleration due to gravity on the earth's surface is 9.81 meters per second squared. So the gravitational pull of Uranus is 86 percent of that of Earth.

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  • Q:

    Why is Earth important?

    A:

    As the only known planet that is habitable for human beings, the Earth’s importance is self-evident. Every living organism known to science obtains all of its resources from Earth, and has very few other options available. Without the Earth, humans would be doomed to extinction, unless they were able to adapt to another planet's conditions before the Earth disappeared.

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  • Q:

    Does Jupiter have seasons?

    A:

    Jupiter, like all the other planets, has seasons. Since Jupiter takes about 12 Earth years to make a full orbit around the sun, each of its seasons lasts about three Earth years.

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