Our solar system is a nine planet system and is part of the Milky Way Galaxy. There is a bit of controversy around exactly how many planets there are in the solar system because some astronomers don’t count lowly Pluto.
We live in the Milky Way Galaxy. But, why is it called the Milky Way Galaxy? Where did this name come from?
The Universe contains all the physical things that we can see and touch like matter as well as all the space in between. There are billions of galaxies in The Universe.
Extraterrestrial aliens are creatures that come from planets other than Earth. They may look like humans, but an alien may also be completely different from what we know.
Outer space is a vast area that we basically cannot even comprehend. It is astronomical in size, and this vast distance only adds to its complexity.