2. Earth Sky Vantage
Solar Totality View
D_moon / D_sun: 1.034
3. 5.14° Orbital Tilt Cross-Section
At Ascending Node
Z-Axis Inclination & Node Syzygy
Interactive 3-Body Optical Ray-Tracing & Orbital Node Simulation (Sun • Earth • Moon)
The Moon's orbit is tilted by about 5.14° relative to Earth's ecliptic plane (the plane of Earth's orbit around the Sun). During most New Moons and Full Moons, the Moon passes thousands of kilometers above or below the Sun-Earth line, casting its shadow harmlessly into empty space. Eclipses can only happen during an Eclipse Season when syzygy coincides with an orbital Node (where the tilted orbit intersects the ecliptic plane).
Because the Sun is an extended light source (not a point), shadows produce two distinct ray zones: the Umbra (complete light blockage) and the Penumbra (partial occlusion). When the Moon is near perigee (closest), its umbral cone touches Earth, causing a Total Solar Eclipse. When near apogee (farthest), the cone falls short, creating an Antumbra and an Annular "Ring of Fire" Eclipse.
A Solar Eclipse occurs at New Moon when the Moon passes between Earth and the Sun. A Lunar Eclipse occurs at Full Moon when Earth sits directly between the Sun and Moon, casting Earth's massive 1.4-million-km umbra across the lunar surface, refracting red sunlight through Earth's atmosphere to create a "Blood Moon".