The Sun’s Mass is 99.86% of the Entire Solar System The Sun is so massive that it accounts for almost all of the mass in our solar system. Its gravitational force holds the planets, moons, asteroids, and comets in orbit. If the Sun were hollow, it would take about 1.3 million Earths to fill it!
There Are More Stars in the Universe Than Grains of Sand on Earth NASA estimates that the observable universe contains over 100 billion galaxies, each with hundreds of billions of stars. That means there are more stars in the universe than grains of sand on all of Earth's beaches combined
Space is Completely Silent In space, no one can hear you scream. That’s because space is a vacuum, which means it doesn’t have any medium (like air or water) for sound to travel through. Astronauts in space rely on radio communication to talk to each other
There Could Be Life in Our Solar System’s Ocean World NASA has discovered that moons like Europa (Jupiter's moon) and Enceladus (Saturn's moon) have subsurface oceans beneath their icy crusts. These moons could harbor life in their oceans, similar to Earth's deep-sea hydrothermal vents, which teem with life even in the absence of sunlight.
Voyager 1 is Over 14 Billion Miles Away from Earth Launched in 1977, Voyager 1 is the farthest human-made object from Earth, currently over 14 billion miles away. It crossed into interstellar space in 2012, making it the first spacecraft to do so. Despite its distance, it still sends data back to NASA