astroseismology
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 star 300 ly away, has a diameter