Q:

How many planets are there in the universe?

A:

Quick Answer

According to NASA, more than 1,700 planets have been confirmed outside of our own solar system. However, the number of planets in the universe could essentially be infinite because scientists have yet to find the so called "edge" of space.

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How many planets are there in the universe?
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Full Answer

Forbes reports that there may be billions of planets like Earth just in our own galaxy. There are at least 100 billion galaxies in the known universe, each one containing billions upon billions of stars. Each one of those stars could have multiple planets in orbit around them. This means that there are likely many trillions of planets in the universe.

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Related Questions

  • Q:

    How often do the planets align?

    A:

    The nine planets in this solar system somewhat align once every 500 years and are grouped within 30 degrees every one to three alignments. When astrologers describe the planets as being aligned, they do not necessarily mean that all of the planets line up on a perfectly straight line. The last alignment within 30 degrees occurred in 561 B.C., and the next alignment within 30 degrees takes place in 2854.

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  • Q:

    How many planets are in the solar system?

    A:

    The solar system contains eight planets. In order of their distance from the sun, the eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. From 1930 until 2006, Pluto was considered the solar system's ninth planet.

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  • Q:

    When were the planets discovered?

    A:

    Mercury, Venus, Mars, Jupiter and Saturn have been known since prehistory. According to NASA, only two non-dwarf planets in the solar system have official discoverers and dates of discovery. These are Uranus and Neptune. Other worlds, such as moons and dwarf planets, were also discovered after the invention of telescopes.

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  • Q:

    What are the nicknames for the planets?

    A:

    Nicknames for the eight planets in the solar system are Swift Planet for Mercury, Morning Star and Evening Star for Venus, Blue Planet for Earth, Red Planet for Mars, Giant Planet for Jupiter, Ringed Planet for Saturn, Ice Giant for Uranus and Big Blue Planet for Neptune. Pluto was once considered a planet and had the nickname Ice Planet, but it is now classified as a dwarf planet.

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