Mercury is putting on a show for skywatchers in the evening sky after sunset. But how well do you know the planet Mercury? Here's some Mercury trivia to ponder while planet gazing.

Earth is our home planet, and it's the only place in the universe where we know for certain that life exists. Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished ...

About 71% of our planet's surface is covered in water, according to the U.S. Geological Survey, and Earth's atmosphere protects the planet from solar radiation.

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 ...

Related: 54 of the Best Ways To Live That 'No-Single-Use-Plastic Life' Earth Day Facts for Kids and Adults Photo by simpson33 from Getty Images/Canva ...

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 ...