FUN FACT: the sun contains 99.8% of the mass of the entire solar system.
FUN FACT: there are more than 100 billion galaxies in the observable universe.
FUN FACT: the largest known structure in the universe is the Hercules-Corona Borealis Great Wall, a supercluster of galaxies stretching over 10 billion light-years.
FUN FACT: in space, no one can hear you scream. sound is carried by atoms and molecules. In space, with no atoms or molecules to carry a sound wave, there’s no sound.
FUN FACT: our solar system orbits the center of the milky way, taking about 250 million years to complete one revolution.
