The total number of planets in the universe is unknown, but there are likely many billions, perhaps many with conditions similar to Earth.
More than 300 planets outside our solar system have been discovered. All are within our own Milky Way galaxy, because accurate observations of planet-sized masses in other galaxies is not currently possible. Theoretical extrapolations suggest that there are indeed planets around many stars in other galaxies as well.
About 30.
yes
NO! galaxys are many thousand times bigger than our solar system
Ultraviolet
At its centre.
The path of univers's galaxys
The center of the elliptical galaxy is very dense with many stars, and density decreases farther out.
the milky wayis the galaxy that our sun is in
See related questions
Itouch defiantly.
Between $120-$150
People on Earth call it the Milky Way (in English).