1610

1. 1610-01-07 astronomical discovery

   Galileo begins observations of Jupiter’s moons

   Category: Discoveries and Scientific Results › Type: Discovery

   Galileo observed points of light near Jupiter that subsequent observations established as orbiting moons.

2. 1610-04-19 astronomy theory

   Kepler suggests a solar influence on comet tails

   In a letter to Galileo, Kepler proposed that a solar breeze pushes comet tails away from the Sun.