The NOAA adds that we—meaning, humans—have only discovered about 20 percent of Earth's waters. Related: Earth Facts for Kids and Adults Photo by sankai from Getty Images Signature/Canva ...

5 fast facts about Saturn Saturn is the farthest planet from Earth that is still visible with the naked eye in the night sky. The name "Saturn" comes from the Roman god of wealth and agriculture.

Read on to learn more surprising and interesting astronomy facts. Get Reader’s Digest’s Read Up newsletter for more knowledge, humor, cleaning, travel, tech and fun facts all week long.

Space Astronomy Planets Mars Mars: Facts about the Red Planet, its moons, and possibilities for life References By Brandon Specktor, Adam Mann last updated April 4, 2025 ...

Mars is a planet with so much more to discover. Research has been done on the planet to test its sustainability for life, and more continues today.

MANCHESTER, N.H. — Here are some fun facts about Earth as we celebrate this planet we live on for Earth Day. The Earth’s diameter at the equator is 7,926 miles.