Posts
Earth compared to larger Planets in our Solar System
Compared to our Sun
Our Sun compared to other Stars
Our Sun is just a tiny speck compared to other stars!
Hard to even make out in the picture with the Sun just 1 pixel wide. Jupiter becomes invisible at this scale.
Milky Way - Our Galaxy
There are 200-400 billion stars in the Milky Way.
The stellar disk of the Milky Way Galaxy is approximately 100,000 light-years in diameter, and is considered to be, on average, about 1,000 ly thick.
Our Milky Way galaxy is small compared to other galaxies. Our neighbouring Andromeda Galaxy has over one trillion stars!
The Observable Universe
This is a Hubble Ultra Deep Field image of a small region of the observable universe (equivalent sky area size shown in bottom left corner).
Each spot is a galaxy, consisting of billions of stars.
There are more than 170 billion galaxies in the observable universe.