Sky awareness alert:
Total lunar eclipse viewable from all continents this weekend.
- First penumbral contact 20:18 GMT (not visible in the Americas)
- Interior umbral contact 22:44 GMT (viewable in Eastern South America, Europe Africa & Asia)
- Greatest Eclipse 23:21 GMT (viewable at moonrise in Eastern North America)
- Last penumbral contact 02:24 GMT (not viewable in Eastern Asia & Australia)
What is moving - the Earth, its shadow, the Moon, or all three?
Extra bonus points:
How many of the following would you need to know to figure out how far it is to the sun by timing this eclipse?
- Mass of the Earth
- Mass of the Moon
- Mass of the Sun
- Diameter of the Earth
- Diameter of the Moon
- Diameter of the Sun
- Distance to the Moon
- Need more info