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Como explorar Stellar Proper Motion 3D Explorer
Open the explorer and watch the Big Dipper drift out of shape as you scrub the years.
- Open https://freetoolonline.com/space-3d/stellar-proper-motion.html and wait for the star field.
- Find the seven Big Dipper stars joined into the familiar shape.
- Drag the year slider forward and back across roughly 100,000 years.
- Watch the two amber stars (Dubhe, Alkaid) drift against the five blue-white ones.
- Press Play to auto-sweep, or hide the green drift arrows, and read the facts panel.
Next: the when guide or vs alternatives. Open the Stellar Proper Motion 3D Explorer.
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