All speed distance time worksheet pdf the planets in our Solar System. As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages.
Click here to learn more. The largest planet is Jupiter. Jupiter is so big that all the other planets could fit inside it. The inner planets are: Mercury, Venus, Earth, and Mars. They are relatively small, composed mostly of rock, and have few or no moons. Generally, the farther from the Sun, the cooler the planet. The outer, gaseous planets are much less dense than the inner, rocky planets.
The Earth is the densest planet. Uranus, Neptune, Earth, Venus, Mars, and Pluto are orders of magnitude less massive. The planet with the strongest gravitational attraction at its surface is Jupiter. Although Saturn, Uranus, and Neptune are also very massive planets, their gravitational forces are about the same as Earth. This is because the gravitational force a planet exerts upon an object at the planet’s surface is proportional to its mass and to the inverse of the planet’s radius squared. A day on Earth takes almost 24 hours.