Our solar system rotates once around the center of our galaxy every 300 million years.
How many galaxies are there in space
Since the Hubble Space Telescope was launched, it has been discovered that there are 10-50 billion galaxies in space. Each galaxy contains between 50 and 100 million stars and an unknown number of planets.
The biggest explosion since the Big Bang
The biggest explosion in the universe since the Big Bang occurred in a galaxy 12 billion light years away. The explosion was so violent that for one second, the galaxy emitted as much energy as all the stars in the entire universe.
