Adam Hart-Davis

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Chasing Comets
00:23 — Neil deGrasse Tyson chases a single comet through its million-year plunge towards the sun. All-New SUN 9/8c
Stalking The Wild Neutrino
01:06 — Who would bury an astronomical observatory so far underground?
Orbits Of the Planets
01:21 — Could some invisible force be responsible for accelerating the motion of the planets the closer they were to the Sun?
A World Without Sunlight
01:24 — A staggering two-thirds of the Earth lies beneath 1000 feet of water - an immense and largely untouched frontier.

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