Where are the craters of Dostoyevsky, Chopin and Van Gogh?

Jupiter moons. Jupiter's moons, es­pe­cial­ly Io (spot on the left), are powerful sources of auroras on Jupiter. These arise from electric currents along field lines, gen­er­at­ed by a dynamo mech­a­nism due to the relative motion between the rotating planet and the moving moon.

Aristarchus of Samos was an ancient Greek as­tronomer and math­e­ma­ti­cian who pre­sent­ed the first known model that placed the Sun at the center of the known universe with the Earth re­volv­ing around it. He was also the first one to deduce the rotation of earth on its axis. His as­tro­nom­i­cal ideas were often rejected in favor of the in­cor­rect geo­cen­tric theories of Aris­to­tle and Ptolemy. Nicolaus Coper­ni­cus at­trib­uted the he­lio­cen­tric theory to Aristarchus.

Moon­quakes are produced by tidal forces. Moon­quakres are much less common and weaker than earth­quakes, although they can last for up to an hour - a sig­nif­i­cant­ly longer time than ter­res­tri­al earth­quakes - because of the absence of water to damp out the seismic vi­bra­tions.

74. In 2004 Clint Eastwood was awarded an Oscar for his movie "Million Dollar Baby" at the age of 74 and became the oldest one ever to win it in director cat­e­go­ry.