Our solar system orbits the galaxy at 515,000 mph, taking about 230 million years to complete one revolution
Image Credit: NASA/JPL-Caltech
Venus is the hottest planet, even though Mercury is closer to the Sun
Image Credit: NASA/JPL-Caltech
Voyager 1 and 2, launched in 1977, went interstellar in 2012 and 2018 but won’t exit the Oort Cloud for thousands of years
Image Credit: NASA/JPL-Caltech
Our solar system has hundreds of moons, but only Mercury and Venus have none
Image Credit: NASA
Pluto, smaller than our Moon, has five moons; Charon is so large it makes Pluto wobble
Image Credit: NASA
Over 300 robotic spacecraft from various nations have explored beyond Earth's orbit
Image Credit: NASA