Ground telescopes
are the only way currently to determine "radial velocity" – a star's
wobble in response to a planet's gravity.pic.twitter.com/VIHjYXIV3d
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As space telescopes like @NASA_TESS
observe the sky
and find planet
candidates, scientists use ground observatories to confirm discoveries and help determine the best stars
to explore for possible planets.
https://go.nasa.gov/302XKfl pic.twitter.com/jZHxWmMU26
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Radial velocity is often how we learn a planet's mass.
If we also know its size, then we get an idea whether it is rocky, like Earth
, gaseous, like Jupiter, or something in between.pic.twitter.com/OM4uO1VYtUShow this thread -
Ground-based follow-up is critical as astronomers gear up for
@NASAWebb. Astronomers can look
for promising targets now so they're ready
to explore them further as soon as #NASAWebb starts operating!pic.twitter.com/IBLZIdEiT7Show this thread
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Hello, I am doing a project about the Kepler and K2 missions, and I would like to know what margin of error the planetary detection methods have (how surely we can say that an object is an exoplanet). Can you recommend any reading about it?
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It starts at the
and ends in the 
s 
We’re over 4K. Keep racking them up, we are going to need them.Thanks. Twitter will use this to make your timeline better. UndoUndo
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A Giant concert w instraments and the universe for a hall..nice!
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Congratulations on writing a great gov tweet! http://shiningsea.measuredvoice.com/PlanetQuest/status/1161674030035824640 … (Ranked 44th for Aug 14.)
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