Kind: captions
Language: en
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Kepler had been the most productive
spacecraft in detecting EXO planet
the star and the planet are pulling on
each other due to gravity the planet is
going to move a lot but the star itself
is only going to move just a tiny bit
and that's why we call it a wobble
you can look at stars on the sky with
exquisite spatial resolution if you
stare long enough and if there is a
planet orbiting that star you can
actually see that small perturbation in
position of the star of the sky
now this is where you take a powerful
telescope you point it in the sky and
you actually see a tiny blur of light
that's indicative of a planet the
problem is these planets are literally
lost in the glare of their parents start
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so you take a massive object and you put
light behind it that massive object will
bend light towards you
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you have a star and you have a planet
going in front of it this is a dark
object passing in front of a bright
object these planets are literally
casting a shadow out into the Galaxy and
we will infer the existence of that
planet by measuring a momentary dimming
of light that repeats once every orbit
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