Earth's Orbital Velocity & Historical Perihelion
Explore Earth's varying speed around the Sun and find historical perihelion dates.
Important Note on Accuracy: For precise, dynamic historical perihelion calculations across millennia, specialized astronomical software (like JPL Horizons or Astronomy Engine) is required. This app provides accurate *representative* data for modern comparative velocities and uses a *lookup table* for historical perihelion dates to ensure correctness within a simple web environment.
Historical & Prehistoric Markers
See how the calculated perihelion fits into the grand timeline of human history and significant eras.
❄️ Ice Age (Last Glacial Peak): ~20,000 BCE
🗿 Göbekli Tepe: ~9600-8200 BCE
🪨 Stonehenge (Earliest Phase): ~3100 BCE
🔺 Great Pyramid of Giza: ~2600-2500 BCE
🏛️ Old Babylonian Empire: ~1894-1595 BCE
⚔️ Iron Age: ~1200-550 BCE
📜 Great Axial Age: 500-300 BCE
🎨 Renaissance: 1300-1600 CE
💡 Enlightenment: 1685-1815 CE
✊ Age of Revolution: 1775-1848 CE
🌐 Modern Era: 1500 CE - Present
