0
Short answer: We don't know. At least 200, by last count.
More complete answer: It's beginning to look as if planets and planetary systems may be the norm rather than the exception. There are 300+ "extra-solar" planets, and more being discovered each month, and with a variety of new tools becoming available to detect signs of planets.
In the Milky Way: 4 Billion have Planetary Systems.And 1 of them is ours.
In the entire Universe: 1024
Add your answer:
Earn +20 pts
Which galaxy are the planets on?
Planets orbit stars, stars orbit a galaxy. Planets are not "on" anything. A lot of stars out there have planets - we are just finding out how many now that we have better techniques to find them. So probably all galaxies have at least some stars with planets.
What are the planets in the galaxy M51?
We can't even see individual STARS in other galaxies, much less PLANETS. We have no idea how many stars are there.
What is the largest Solar system Universe Milky Way galaxy sun The Earth?
The Milky Way galaxy is the largest of these options. It contains billions of stars including our sun, which is just one of many within the galaxy. The Earth is a planet within our solar system, which is just a small part of the Milky Way.
How are star solar system and galaxy related?
Stars are the building blocks of a solar system, as they form at the center of it. A solar system consists of a star (like our Sun) and any planets, moons, asteroids, and other bodies orbiting it. Galaxies contain billions to trillions of stars, along with solar systems, and are held together by gravity.
Where do Stars Galaxies Nebulae and Planets fit in the grand scheme?
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.
How many moons Andromeda galaxy have?
It is not known. The Andromeda Galaxy contains about a trillion stars, many of which certainly have planets, though we don't know how many. Many of the planets likely have moons. All told, there are likely several hundred billion to several trillion moons in the Andromeda Galaxy.
How many planets and moons are in the Star Wars galaxy?
There are billions of planets and moons in the Star Wars galaxy.
How many moons altogether are there in your galaxy?
My galaxy, the Milky Way (which is also your galaxy; I am sure that the person asking this question is not a visitor from another galaxy) has not been examined in enough detail to say even how many planets it contains, much less how many moons orbit those planets. But given that our own solar system has numerous moons, and there are billions of other stars in the galaxy which probably also have planets and moons, at a wild guess I could estimate possibly a hundred billion moons.
Is solar system a galaxy?
No. A galaxy is a collection of stars ... possibly as many as hundreds of billions of stars in one galaxy. Our sun ... including all of the comets, asteroids, moons, and planets including earth that make up the solar system ... is one star out of the estimated 200 to 400 billion stars in our galaxy.
Are the stars in the sky different planets and moons we have not discovered yet?
No. We know what the stars are. They are not planets. They are distant suns, many of which do have undiscovered planets.
Which galaxy are the planets on?
Planets orbit stars, stars orbit a galaxy. Planets are not "on" anything. A lot of stars out there have planets - we are just finding out how many now that we have better techniques to find them. So probably all galaxies have at least some stars with planets.
How many moons and stars are there in the milky way?
There are about 100 billion stars in the Milky Way Galaxy. We only know of moons in the solar system - 169 of them.
Why do stars planets and moons do not collide it self?
The moon is many times closer to the Earth than the stars are.
How many moons does the milky galaxy have?
We only know about the number of moons for our own solar system. Technology now lets us see very large planets around other nearby stars. We have found a few near Earth size. However currently we can not detect moons around planets in other solar systems.
How many moons make up the sun?
The Sun is a star and does not have any moons. Moons typically orbit around planets, not stars.
How to calculate the number of solar systems in our galaxy?
The number of stars in our galaxy is a few hundred billion. You probably refer to the number of stars that have planets; it is known that many stars in our neighborhood have planets, but it is yet too early to give even an approximate percentage. It is possible that most stars have planets, but this can't be stated for sure, from the available data.The number of stars in our galaxy is a few hundred billion. You probably refer to the number of stars that have planets; it is known that many stars in our neighborhood have planets, but it is yet too early to give even an approximate percentage. It is possible that most stars have planets, but this can't be stated for sure, from the available data.The number of stars in our galaxy is a few hundred billion. You probably refer to the number of stars that have planets; it is known that many stars in our neighborhood have planets, but it is yet too early to give even an approximate percentage. It is possible that most stars have planets, but this can't be stated for sure, from the available data.The number of stars in our galaxy is a few hundred billion. You probably refer to the number of stars that have planets; it is known that many stars in our neighborhood have planets, but it is yet too early to give even an approximate percentage. It is possible that most stars have planets, but this can't be stated for sure, from the available data.
What are the planets in the galaxy M51?
We can't even see individual STARS in other galaxies, much less PLANETS. We have no idea how many stars are there.
