Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
		1      7 years ago, in 1950: The Soviet R-2, with twice the range of the R-1, makes its first flight.	2	3      15 years ago, in 1942: The first V-2 rocket is launched from Peenemunde, Germany, and reaches 85 km (52 mi).	4        This year: The Soviets launch Sputnik 1, the world's first artificial satellite.	5
6	7	8	9	10      111 years ago, in 1846: William Lassell discovers Neptune's largest moon, Triton.      9 years ago, in 1948: The R-1 (a Soviet built copy of the German V-2) makes its first successful flight.	11	12
13	14      10 years ago, in 1947: Charles "Chuck" Yeager breaks the sound barrier in the XS-1.	15	16	17      51 years ago, in 1906: 617 Patroclus, a Jupiter trojan asteroid, is discovered by German astronomer August Kopff at Heidelberg Observatory.        This year: The groundbreaking and dedication of the Green Bank radio astronomy site takes place.	18	19
20	21	22	23      33 years ago, in 1924: 1036 Ganymed, the largest near-Earth asteroid, is discovered by Walter Baade.	24      106 years ago, in 1851: William Lassell discovers two moon of Uranus, Ariel and Umbriel.      11 years ago, in 1946: The first photo of Earth from space is taken by U.S. scientists with a V-2 rocket.        This year: The Boeing X-20 Dyna-Soar program begins, to be cancelled 6 years (and US$660 million) later.	25      286 years ago, in 1671: Giovanni Cassini discovers one of Saturn's moons, Iapetus.	26        This year: Sputnik 1 ceases sending signals after 22 days when the transmitter batteries run out.
27	28	29	30	31      37 years ago, in 1920: 944 Hidalgo, the first member of the centaurs (though not realized as distinct until 1977) , is discovered by German astronomer Walter Baade.