Daily Extra :
Astronomy & Space Word of The Day
Astronomy & Space Word of The Day
facula: A circular to subcircular region which is brighter than the surrounding area.
Today in History:
1610: Galileo Galilei points his newly developed telescope at the sky and observes craters and mountains on the Moon, moving spots on the Sun, four moons revolving around Jupiter, the phases of Venus, and the almost innumerable stars of the Milky Way. Jan 4 thru 15, 1601 are called by some the most important days in the history of astronomy.
1610: Galileo Galilei points his newly developed telescope at the sky and observes craters and mountains on the Moon, moving spots on the Sun, four moons revolving around Jupiter, the phases of Venus, and the almost innumerable stars of the Milky Way. Jan 4 thru 15, 1601 are called by some the most important days in the history of astronomy.
1642: Galileo Galilei born in Arcetri (near Florence) (now in Italy).
1942: Stephen Hawking, British theoretical astrophysicist born.
1973: Launch of Luna 21 carrying the Lunokhod 2 rover, the second robotic lunar rover. Made lunar landing with an automated Lunokhod 2 rover.
1985: Launch of Sakigake mission to Comet Halley.
