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  • victoria l outerbridge

    The moon's orbital plane (gray circle) is inclined at 5o to the ecliptic - Earth's orbital plane (yellow circle). When a new moon closely a...

  • PAM

    Total lunar eclipse for the Americas on night of April 14-15 | Tonight | EarthSky

  • Belle Sands

    The yellow circle shows the sun's apparent yearly path (the ecliptic) in front of the constellations of the Zodiac. The gray circle displays the monthly path of the moon in front of the zodiacal constellations. If a new moon or full moon aligns closely with one of the moon's nodes, then an eclipse is in the works.

  • Mona Evans

    Orbits of Earth and Moon. Looking at a two-dimensional diagram, you might wonder why there isn't an eclipse every month. The answer is that the Moon's orbit is slightly tilted with respect to the Earth's orbit. The two points where its orbit crosses Earth orbit are called nodes. Only if the Moon is full when it's near a node do the Sun, Earth and Moon line up for a lunar eclipse. ©Mona Evans, “Lunar Eclipses” http://www.bellaonline.com/articles/art28454.asp

Related Pins

The moon passes through the Earth's shadow from west to east. The yellow line represents the ecliptic- Earth's orbital plane projected onto the dome of sky. The moon crosses the ecliptic at the moon's ascending node, going from south to north.

Total lunar eclipse for the Americas on night of April 14-15 | Tonight | EarthSky

Total lunar eclipse for the Americas on night of April 14-15 | Tonight | EarthSky ~~ The first "Blood Moon" this year!

The moon passes through Earth's very light penumbral shadow before and after its journey across the dark umbral shadow

"The Golden Crescent" ~ Photography by Luis Argerich

Jupiter and Io. "The image shows a major eruption in progress on Io's night side, at the northern volcano Tvashtar. Incandescent lava glows red beneath a high volcanic plume, whose uppermost portions are illuminated by sunlight. The plume appears blue due to scattering of light by small particles in the plume."

Wish I would've had this for my solar system lesson!

During a total lunar eclipse, the moon passes through the outer part of Earth's shadow, called the penumbra, and then into the dark umbra. When fully immersed in the umbra, the moon is in total eclipse or in totality. (Credit: Sagredo) Mona Evans, "Blood Moons and Lunar Tetrads" www.bellaonline.c...