The Synthesis of "planet"

What defines a planet? Explore the official definition, why Pluto was reclassified, and the exciting search for new worlds beyond our solar system.

Discover Earth, the third planet from the Sun and the only astronomical object known to harbor life. Learn what makes our vibrant world so unique.

Discover Mars, the fourth planet from the Sun. Learn why this dusty, cold world is a major focus for space exploration and the search for alien life.

Discover Pluto, the famous dwarf planet. Learn why it was reclassified and what the New Horizons mission revealed about its complex and icy world.

Discover Neptune, the eighth and most distant planet from the Sun. Learn about its icy composition, powerful winds, and mysterious blue appearance.

Discover Mercury, the smallest and fastest planet in our solar system. Learn about its extreme temperatures, cratered surface, and recent discoveries.

Explore Jupiter, the largest planet in our solar system. Learn about its massive storms, numerous moons, and its role as a planetary protector.

Discover Uranus, the seventh planet from the Sun. Learn about its unique sideways rotation, icy composition, and stunning new views from the JWST.

Discover super-earths, exoplanets larger than our world but smaller than Neptune. Learn why these planets are key in the search for alien life.

Discover Venus, Earth's sister planet. Learn why this world of extreme heat and pressure captivates scientists and fuels new space missions.