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Mercury Spin-Orbit Resonance 3D Explorer vs alternatives
Mercury Spin-Orbit Resonance 3D Explorer animates one full 176-day solar day so a reader can watch the two hot-pole markers swap in real time - a printed astronomy textbook diagram wins as a fixed, citable figure with no rendering required; NASA's MESSENGER mission pages win for the original spacecraft imagery and data behind the confirmed 58.646-day rotation period.
| Option | Strength | Access | Trade-off |
|---|---|---|---|
| Mercury Spin-Orbit Resonance 3D Explorer (this page) | Animated day-scrub view of the 3:2 lock and its alternating hot-pole consequence in one 3D scene | Free, in browser | Constant-angular-rate approximation, not a true Kepler's-second-law orbital-dynamics simulation |
| Printed astronomy textbook diagram | Fixed, citable figure of the 3:2 ratio | Reference texts | No animation of how the hot poles actually swap over a full solar day |
| NASA MESSENGER mission pages | Original spacecraft imagery and data confirming the rotation period | Free, official source | No interactive day-scrub teaching visualization |
Key published figures
| Figure | Value |
|---|---|
| Sidereal rotation period | 58.646 Earth days |
| Sidereal orbital period | 87.969 Earth days |
| Discovery | 1965 radar observations, Pettengill and Dyce |
| Confirmation | NASA MESSENGER mission, 2011-2015 |
Start with the step-by-step guide or when to use. Open the Mercury Spin-Orbit Resonance 3D Explorer.
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