GALAXYS ARE REALLY COOL

So for this weeks I wonder topic I'm gonna be talking about galaxys and what we know about them.

First off Google says a galaxy is a cluster of millions and billions of stars, gas, and dust held together by gravatational attraction. There are also 6 types of galaxys: Barred spiral, irregular, spiral, peculiar, elleptical, and lenticular.

Our galaxy is the milky way is classified as a barred sprial galaxy.

The milky way

The milky way is not our only galaxy though, the Andromeda galaxy is the nearest galaxy to the Milky Way. The Andromeda galaxy is also a sprial galaxy and it is also the closet galaxy to Earth.

Back to the milky way now. The milky way is called the milky way because Romans called it "via latea" which translates to "road of milk". The Greeks called it "galaxias kyklos" which is "milky circle".




P.S - There are 1 billion trillion known stars in the observable universe which is really cool.