Big Picture Science - 100% Invisible
In astronomy, the rule of thumb was
simple: If you can’t see it with a telescope, it’s not real. Seeing is
believing. Well, tell that to the astronomers who discovered dark energy,
or dark matter … or, more recently, Planet 9. And yet we have
evidence that all these things exist (although skepticism about the ninth – or
is it tenth? – planet still lingers).
Find out how we know what we know
about the latest cosmic discoveries – even if we can’t see them directly.
The astronomer who found Planet 9 – and killed Pluto – offers his
evidence.
And, a speculative scenario suggests
that dark matter helped do away with the dinosaurs.
Plus, the winner of the 2015 Nobel
Prize in Physics explains why neutrinos that are zipping through your body
right now may hold clues to the origin of the universe.
Guests:
Download podcast at:
http://bigpicturescience.org/episodes/100-invisible
You
can listen to this and other episodes at
http://bigpicturescience.org/, and
be sure to check out
Blog Picture Science,
the companion blog to the radio show.