Watch the planets move around the Sun, travel through the history of the universe from the Big Bang to the far future, look inside black holes and follow how physics theories grew from Newton to string theory — then calculate your weight on Mars, light travel times, E = mc² and time dilation, and test yourself.
Positions are approximate for the date shown. Distances are squeezed (square-root scale) and planets are drawn much bigger than real so everything fits — press True sizes to compare them to scale.
Tap a part of the diagram, or a famous black hole:
Explored: 0/ · Tap anything on the map to open it.
Test yourself on the planets, the history of the universe, black holes, theories and the constants of nature. Challenge mode gives 20 seconds per question with bonus points for speed and streaks.
Type any topic (e.g. “forces and motion for 11-year-olds”, “quantum tunnelling”, “the life of stars”). The AI writes the questions; check anything surprising against a textbook.
Physics Map is a free, visual way to explore physics in your browser — for school, for curiosity, or to check a number. There is nothing to install and no account.
How much would I weigh on Mars? About 38% of your Earth weight: a person who weighs 60 kg on Earth would read about 23 kg on a scale on Mars.
How big is a black hole? Its event horizon grows with its mass: about 3 km across for every Sun of mass it holds (radius 2.95 km per solar mass).
How old is the universe? About 13.8 billion years, from measurements of the cosmic microwave background.
Is the data accurate? Planet data follows NASA’s planetary fact sheets, rounded. Speculative ideas such as string theory and the multiverse are marked as untested.