Tag Archives: planetary transit
Accurate measurement of exoplanet radius
Image: Imaginative illustration of Kepler 93b’s diameter being measured. Credit: NASA/JPL-Caltech Using both the Kepler and the Spitzer space telescopes, scientists from NASA have made the most precise measurement of an exoplanet’s radius yet. Kepler 93b, which orbits a dim … Continue reading
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Tagged astroseismology, exoplanet, Infrared Array Camera, Kepler space telescope, planetary transit, Spitzer Space Telescope
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Kepler data reveals a frost giant
I’ve been most fascinated lately by studies of planet formation. Every small detail is like that one letter in the crossword you need to fill all the other boxes in, every discovery a cornerstone that holds together a unique piece of the universe. For example, using just the find that the exoplanet Beta Pictoris b has a very short day of eight hours, astronomers could speculate on how it was formed, what its density could be, and how heavy it could get over time. And it isn’t surprising if a similar tale awaits telling by Kepler 421b. Continue reading
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Tagged astrometry, astrophysics, exoplanets, frost line, gas giants, Kepler 421b, NASA Kepler mission, planetary transit, Uranus
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