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Experts drill into the impact crater of an asteroid that created a worldwide cataclysm.
Airing December 27, 2017 at 9 pm on PBS
NOVA on Facebook: https://www.facebook.com/NOVAonline NOVA on Twitter: @novapbs NOVA on Instagram: @novapbs
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Experts drill into the impact crater of an asteroid that created a worldwide cataclysm.
Airing December 27, 2017 at 9 pm on PBS
NOVA on Facebook: https://www.facebook.com/NOVAonline NOVA on Twitter: @novapbs NOVA on Instagram: @novapbs
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