Cách Khám Phá Solar Eclipse 3D Explorer
The Solar Eclipse 3D Explorer starts as soon as the page loads: drag to orbit the Sun-Earth-Moon layout, scroll or pinch to zoom, and press Play shadow to animate the Moon's umbra across Earth. Everything renders on your own device - no install, no account.
Open the scene
Load the page and Sun, Earth, and Moon appear with penumbra and umbra cone meshes extending from the Moon toward Earth. The 3D engine downloads once and is cached. If WebGL is unavailable, a plain notice appears instead of a broken canvas, and the facts panel still reads normally.
Play one shadow sweep
Press Play shadow to animate the Moon's umbra along its path across Earth. At 1x one sweep compresses in about 12 seconds. Press again to pause on any phase for a closer look at partial penumbra, partial umbra, or totality along the central track.
Scrub shadow progress
Move the progress slider from 0 to 100 percent. The label updates on every move and the shadow jumps to that point along the path. Scrubbing pauses playback automatically so you can inspect a single eclipse phase.
Toggle the totality path
Press Hide totality path to remove the narrow central track on Earth's surface, or Show totality path to bring it back. The button label toggles with the path visibility so you can compare partial shadow reach against the strip where the umbra covers the full solar disk.
Read the facts panel
The panel names the current phase and lists Sun apparent diameter about 0.53 deg, Moon apparent diameter about 0.52 deg, umbra width from 100 to 270 km, and the Saros interval of 18 years 11 days - NASA published values. A note below states that shadow cones are exaggerated; the table numbers are real.