A simulation of KELT-9b, on the right, hit by the powerful radiation coming from the nearby star [Michele Diodati]

The Double Seasons of Kelt-9b

An exoplanet with a hellish climate experiences two summers a year — a year only 35 hours and 32 minutes long — because of the polar orbit it travels around an oblate star

In the 6th chapter of The Assayer, published in 1623, Galileo notes:

Philosophy [i.e. natural…