The Synthesis of "planetary nebula"

Explore planetary nebulae, the stunning, glowing shells of gas expelled by dying stars. Learn how these cosmic ghosts form and what they teach us.

Discover nebulas, the breathtaking interstellar clouds of dust and gas where stars are born. Learn why these cosmic nurseries are key to the universe.

Discover the secrets of white dwarfs, the dense, Earth-sized remnants of stars like our Sun. Learn about their formation and cosmic significance.

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

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

Discover supernova remnants, the expanding clouds of gas and dust from a star's death, and learn how they create the elements necessary for 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.

Explore the ice giants, Uranus and Neptune. Discover what these frigid, distant planets are made of and why they are crucial to understanding our universe.

Discover trans-Neptunian objects (TNOs), the icy bodies and dwarf planets orbiting our Sun in the mysterious, vast region beyond Neptune.

Discover the Kuiper Belt, a vast, icy region beyond Neptune filled with dwarf planets and ancient remnants from the Solar System's formation.