The universe is vast and contains billions of galaxies, each with billions of stars, many of which host multiple planets. While there isn't a definitive number of planets, estimates suggest there could be over 100 billion planets in our Milky Way galaxy alone. When considering the entire observable universe, the number of planets could reach into the trillions. Thus, the universe can accommodate an almost limitless number of planets.
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About 197 quadtrillion (196,832,673,513,000,000) Mercury's
Those are both poorly worded versions of the same question. The question should read:"Does the universe have nine planets?"And the answer is:"No. The Universe has trillions and trillions of planets, but our solar system has eight planets."
no one knows because no one can travel to the edge of the ever-expanding universe
No-one can possibly know for sure, but the answer is probably billions. There are hundreds of billions of stars in our own Milky Way galaxy, many of which have solar systems of their own, and as many galaxies in the Universe as there are stars in our own galaxy (and the Milky Way is by no means a particularly large galaxy, just of average size). If you take all of this into account, the number of planets likely to be in the universe would be many billion.
In order of size from largest to smallest. Universe > Galaxy > Solar System > Earth. The Erthis one of nine planets in the solar system. All of which orbit the Sun. The Sun, is star in one of the tails of the (Milky Way) Galaxy. The Galaxy, with one of millions of galaxies in the universe.
Since a galaxy can have many solar systems and a solar system might have more than one planet, for each galaxy there would be many planets. Therefore there would be more planets than galaxies.
Galaxies/nebulae are at the top of the tree; each one contains several billion stars. Each star might have many planets orbiting around it, and planets can have many moons.
There are many planets in the universe, but as far as we know there is only one Earth, therefore I do not know to which "other earth" you are referring.
No because we are one of many million galaxys in the universe and even if all the planets dissapeared along with the stars and other objects flying around in the universe there would still be a extremely large amount of emptyness up in the skySo the answer is NO the universe will never end.
Many planets have only one moon. For example, Earth only has one moon. There are likely to be billions of planets in our universe with just one moon. As you can imagine, the list of these would take a long time to write out. We will only have discovered a small amount of actual planets that fit this description though.
The number of planets that orbit a star can vary widely. In our solar system, there are eight planets orbiting the Sun. However, many other stars in the universe have been found to host multiple planets, with some systems containing as many as seven or more. Overall, discoveries from exoplanet research suggest that most stars may have at least one planet orbiting them.