Kapan Menggunakan Solar Eclipse 3D Explorer
The Solar Eclipse 3D Explorer fits classroom demos, short curiosity breaks, and solar eclipse literacy with the Moon's penumbra and umbra cones sweeping Earth plus a toggleable totality path. It is an educational geometry visualization - not an ephemeris or phase calendar - so a few session types need another tool.
A five-minute classroom demo
A five-minute classroom demo is the ideal session: open Solar Eclipse 3D Explorer, press Play shadow, and let the class watch the Moon's umbra sweep Earth while the panel names each phase. Pause at 50 percent progress and read umbra width from 100 to 270 km - faster than a flat diagram alone.
Shadow cones and the totality path
Solar Eclipse 3D Explorer suits teaching shadow cones because the penumbra and umbra meshes show where the Moon's shadow falls on Earth. Students can scrub to totality, toggle the totality path, and connect the narrow central track to nearly equal Sun and Moon angular sizes - about 0.53 deg versus 0.52 deg.
Fullscreen shadow pacing
Solar Eclipse 3D Explorer in fullscreen keeps the play button, progress slider, totality path toggle, and facts panel visible while Sun, Earth, and Moon stay in view. Press Play shadow and one sweep across Earth compresses in about 12 seconds at 1x - enough motion to hold attention without sound or accounts.
Sessions it does not fit
These sessions do not fit Solar Eclipse 3D Explorer: any time you need the date of the next real eclipse, tonight's Moon phase, or Earth's shadow on the Moon at full moon. The scene does not run an ephemeris, does not match today's sky, and does not show lunar-eclipse geometry (Earth's shadow on the Moon - use Lunar Eclipse 3D Explorer). For everyday phase names and the 29.53-day synodic cycle, use Moon Phases 3D Explorer. It also needs WebGL in the browser.
Why trust these tools
- Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
- No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
- Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
- Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
- Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.