Q&A: What causes the phases of the moon, eclipses, and tides?

Question by hollicrombie: What causes the phases of the moon, eclipses, and tides?
thanks...i WILL choose a best answer. :]


Best answer:
Answer by spencershawk1&2: rotation of earth around sun & rotation of moon around earth

3: gravitational force moon has on earth as it rotates around planet

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When the moon passes through the Earth's shadow, it causes the moon to look very unusual for a short period of time. This event is called a lunar eclipse, and it occurs roughly twice a year. There's one viewable to folks outside of North America on June 15, so sit back and learn more about how lunar eclipses work in this video! This video is also available in stereoscopic 3D, viewable by many kinds of 3D devices, including common red/blue paper glasses that you might have lying around! To view this video in 3D, click here: youtu.be Credit goes to TheWusa from de.wikipedia.org for the illustrations that this video's light scattering animations are based on. This video is public domain and can be downloaded at: svs.gsfc.nasa.gov Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: svs.gsfc.nasa.gov Or find NASA Goddard Space Flight Center on facebook: www.facebook.com Or find us on Twitter: twitter.com
Video Rating: 4 / 5

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