What If the Moon Had Its Own Moon?

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A new moon has suddenly appeared near Earth. Except it's not orbiting our planet. It's orbiting the Moon. A moon having it's own moon? Huh? How did this mini moon form? Is it here to stay? And how would this affect us on Earth?

00:00 What If the Moon Had Its Own Moon?
01:14 The Great Impact Hypothesis: Moon’s formation
02:16 Alternative moon formation
03:40 Moon’s moon as a captured asteroid
04:51 Collision with Earth or ejection
06:05 Cultural/scientific impact of a moon moon
07:14 Earth shrinks, Moon expands
08:47 Gravity changes on "Little Earth"
10:15 Health impacts of low gravity on humans
11:39 "Big Moon’s" gravity
13:01 Atmospheric loss on Little Earth
14:45 Tidal locking & becoming a moon
16:21 Surviving on Big Moon

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#whatif #moon #space #cosmos #universe #nasa