Space and astronomy, explained visually

Space is where intuition breaks down. Distances are so large that light takes years to cross them, stars are nuclear furnaces millions of times bigger than Earth, and a black hole bends space so much that nothing escapes. Numbers alone don't make those ideas land — pictures do. Know.it's astronomy lessons animate the scale and the motion: planets tracing their orbits, the Moon cycling through its phases, a dying star collapsing into a supernova.

Here you'll find our free space explainers, from our own neighbourhood — the Sun, the Moon and the planets of the solar system — out to stars, nebulae, galaxies and the universe itself, plus the history of exploring it, from the space race to the Moon landing. Comparisons clear up the classic mix-ups, like comets vs asteroids and stars vs planets.

Every card opens a short written explanation. Optional visual lessons use available credits or plan allowance. Curious about something specific, like why Pluto isn't a planet? Ask it, and hear the answer in English, Hindi, Marathi, Tamil, Telugu, Hinglish and Minglish, depending on your plan and selected lesson options.