Our Solar
Planets

Mercury is the smallest and innermost planet in the Solar System. It has no natural satellites and no substantial atmosphere. The planet has a large iron core which generates a magnetic field about 1% as strong as that of Earth's.

Venus is the second planet from the Sun and is Earth's closest planetary neighbor. It's often called Earth's twin because it's similar in size and density. Venus has a thick atmosphere that traps heat, making it the hottest planet in our solar system.

Earth is the third planet from the Sun and the only astronomical object known to harbor life. About 71% of Earth's surface is covered with water. Earth's atmosphere consists of 78% nitrogen, 21% oxygen, and other gases that protect life by absorbing solar radiation and regulating temperature.

Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System. Mars is often called the "Red Planet" due to its reddish appearance, which is caused by iron oxide (rust) on its surface. Mars has two small moons, Phobos and Deimos.

Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined. Jupiter has a strong magnetic field and at least 79 moons, including the four large Galilean moons.

Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius about nine and a half times that of Earth. Saturn is known for its prominent ring system, which consists of ice particles, rocky debris, and dust.

Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. Uranus is similar in composition to Neptune, and both have bulk chemical compositions which differ from that of the larger gas giants Jupiter and Saturn. Uranus's atmosphere is similar to Jupiter's and Saturn's in its primary composition of hydrogen and helium.

Neptune is the eighth and farthest known planet from the Sun in the Solar System. It is the fourth-largest planet by diameter, the third-most-massive planet, and the densest giant planet. Neptune is 17 times the mass of Earth, slightly more massive than its near-twin Uranus. Neptune is not visible to the unaided eye and is the only planet in the Solar System found by mathematical prediction rather than by empirical observation.