One. The Milky Way is our galaxy. Every star you see in the sky at night with your naked eye is in the Milky Way. The closest galaxy to ours is the Andromeda Galaxy, which you can see if you look in the right place, but it will just look like a fuzzy blob and not like a star. The milky way is the name of our galaxy, there are no other galaxies in it.
There may be up to 100 billion planets in the Milky Way galaxy according to Alan Boss, an astronomer with the Carnegie Institution and author of the new book "The Crowded Universe: The Search for Living Planets." There are 8 planets in our solar system.
We are not sure yet how many planets there are yet because they are very hard to detect.
Their light is minimal compared to their parent star, and in comparison they are so small. That is why it is impossible to tell how many planets there are in the galaxy, with current technology.
Only a few "exoplanets" (planets orbiting other stars) have been discovered, but all have different traits. None are like Earth as far as we know.
However we are aware of how many Stars there are in our Galaxy. There are approximatively 200 billion Stars in the Milky Way Galaxy alone. In the Andromeda Galaxy, there are approximatively 400 billion.
That is not counting all of the other galaxies! ;)
A famous guru once said that there are exactly 8 planets with life including Earth in the universe But Science says that none have been discovered
According to Scientists there are 10 planets since they discovered a new planet
That is a question that we (in our lifetime) will never know. There are too many stars.
to our knowledge every star has planets around them, now if they have life. that is the question
100 - 400 billion.
There are billions of planets and moons in the Star Wars galaxy.
nine
The planets are part of the galaxy.
It is not generally known how many planets are in each galaxy; it isn't even known how many planets are in our own galaxy, and will probably never be known exactly, due to its enormous size. However, according to latest observations, it seems likely that every star has several planets, at least on average.
There are trillion trillion planets in our galaxy
It is not known. Scientists are still not sure how many dwarf planets are in the solar system or how many true planets are in the galaxy. If estimates from our solar system apply elsewhere, however, the number is probably in the trillions.
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.
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.
It is possible that every galaxy has some planets. We just are starting to detect some planets in other galaxies.
100 Billion
Astronomer's have not been able to count all the planets in the Andromeda Galaxy. The Andromeda Galaxy is home to one-trillion stars. The Andromeda Galaxy is expected to collide with the Milky Way in the next 4.5-billion years.
The planets we know of, some 300 now, are all in the Milky Way galaxy.