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Astronomers measure it by predicting with the stars and using scientific tools

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Q: How might astonomers measure how long planets and plutoids orbit the sun?
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Do planets have Ozone?

Earth has an ozone layer in atmosphere. It is present in the stratospheric region. Other planets which have oxygen in their environment might have ozone.Some planets like earth do. Others might have.


What planet has the most planets?

Planets don't have planets. The Sun has planets, and planets have moons.Dwarf planets might orbit around each other, but this answer uses the correct definition of the term planet, which does not include Pluto or Charon.


What are the planets for?

there isn't actually a reason for "what are planets for" but they might be for life forms. planets are not for anything really, they just got made by gravity.


Why might the solar wind have a stronger effect on inner planets than on outer planets in the solar system?

Because the inner planets are closer to the sun than the outer planets.


Is there water on some planets?

no there is not, if so there might be from the outer planets like saturn uranus or neptune definetely


Which of the outer planets has a surface more similar to the inner planets than to the outer planets?

None of them do. All the outer planets are gas planets while all the inner planets are rocky. You might be thinking of Pluto. It has a solid surface, but it is no longer considered a planet.


How how many planets?

Nobody knows for sure, but there is so many, that there might be more planets than people on earth!


What is the opposite of measure?

The opposite of the verb measure might be not to measure, or to guess.


What is another way you might divide the planets into two groups other than the inner planets and the outter planets?

Stony and Gas Giant. But it still divides the same.


Is there life in the omniverse?

i think there might be quadrillions of planets with life on


Is there live on other planets?

there might well be life but there is no live


How do you find out what planets still exist and the planets that does not exist?

yu might want to rephrase this question it dont make no sense