dark areas = lava flows (“seas”) apollo missions
TRANSCRIPT
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Dark areas = lava flows (“seas”)
Apollo missions
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Barringer Crater (Arizona)
rises 150 feet above the level of the surrounding plain.
The crater itself is nearly a mile wide, and 570 feet deep
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Barringer Crater
• Scientists now believe that the crater was created approximately 50,000 years ago. The meteorite which made it was composed almost entirely of nickel-iron, suggesting that it may have originated in the interior of a small planet. It was 150 feet across, weighed roughly 300,000 tons, and was traveling at a speed of 28,600 miles per hour (12 kilometers per second) according to the most recent research. The explosion created by its impact was equal to 2.5 megatons of TNT, or about 150 times the force of the atomic bomb that destroyed Hiroshima.
• Speed of sound = This equates to 1,236 kilometers per hour (768 mph), or about one kilometer in three seconds and about one mile in five seconds.
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This 150-kilometer-wide crater lies just off the Yucatan peninsula. Scientists calculate that it was blasted into Earth by a
10-kilometer-wide (6 miles) asteroid or comet traveling 30 kilometers per second -- 150 times faster than a jet airliner.
Scientists have concluded that the impact that created this crater occurred 65 million years ago. The date corresponds perfectly to
the date of the dinosaur extinction.
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Santa Monica
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ESRTs p15
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near far
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because as the Earthrotates, the moon
revolves
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How many hours is the moon visible each day?
Approximate Times of Moonrise and Moonset
moonrise moonset
new moon 06:00 AM 06:00 PM
waxing crescent 09:00 AM 09:00 PM
first quarter 12:00 PM 12:00 AM
waxing gibbous 03:00 PM 03:00 AM
full moon 06:00 PM 06:00 AM
waning gibbous 09:00 PM 09:00 AM
third quarter 12:00 AM 12:00 PM
waning crescent 03:00 AM 03:00 PM
new moon 06:00 AM 06:00 PM
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Always HALF is lit up
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Waxing
Waning
quartercrescent gibbous
quarter
crescent gibbous
new
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What’s wrong with this pic???
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On July 20, 1969, he set foot on the moon. People around the world watched and listened as Neil slowly climbed down the ladder of the lunar lander. Then, he stepped on the moon's surface where he could look up and see Earth far above him. There he said these well-known words, "That's one small step for a man one giant leap for mankind."
Footprints
Space suits (link)
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A L B E D O