Space Facts That Shift Perspective

10 Space Trivia That Put the Cosmos in Perspective 1. Space is not completely

silent Space is a vacuum, so sound waves cannot propagate the way they do on Earth.

However, pressure waves exist in plasma and gas clouds. Astronomers have

detected low-frequency “sound waves” in galaxy clusters—converted into audio, they are millions

of times deeper than what humans can hear. 2. There are more stars

in the universe than grains of sand on Earth Estimates place the observable universe

at 200 billion to 2 trillion galaxies, each with billions of stars. Conservative calculations

already exceed the total number of sand grains on all Earth’s beaches combined.