Blog

Learn how gravity, pressure, composition, and rotation determine why planets become round and what keeps some worlds from being perfectly spherical.

Learn how solar activity drives space weather, from flares and CMEs to geomagnetic storms, radio blackouts, and auroras.

Learn what the asteroid belt is, where it sits in the Solar System, what it’s made of, and why it matters to planetary science.

Learn how comets form glowing tails, why they point away from the Sun, and what solar radiation reveals about these icy bodies.

Explore what lies beyond the Solar System, from the heliosphere and interstellar medium to nearby stars, galaxies, and the observable universe.

Learn how planets stay in orbit through gravity, inertia, and orbital velocity, plus why stable paths are possible in our solar system.

Learn the planets in order from the Sun, plus key facts, memory tricks, and why Pluto is no longer counted among them.

Learn why gravity, motion, and orbital balance keep planets circling stars instead of flying away or falling inward.

Learn why the asteroid belt exists, how Jupiter shaped it, and what it reveals about the solar system’s formation.

Explore how planets rotate, what drives spin and tilt, and why different worlds have dramatically different day lengths and axial behaviors.