The occultation of stellar active regions during the planetary transit[1] can lead to inaccurate estimates of the characteristics of these exoplanets, especially the spin-orbit tilt angle. This was ...

The detection of exoplanets using any method is prone to confusion due to the intrinsic variability of the host star. We investigate the effect of cool starspots on the detectability of the exoplanets ...

A planet thought to orbit the star 40 Eridani A—host to Mr. Spock's fictional home planet, Vulcan, in the "Star Trek" universe—is really a kind of astronomical illusion caused by the pulses and ...