1701 - Anders Celsius, Uppsala, Sweden, astronomer (proposed the Celsius temperature scale)
1885 - Earliest photograph of a meteor shower taken
1971 - Soviet Mars 2 becomes 1st spacecraft to crash land on Mars
1980 - Soyuz T-3 carries 3 cosmonauts to Salyut 6 space station, launched
2001 - A hydrogen atmosphere is discovered on the extrasolar planet Osiris by the Hubble Space Telescope, the first atmosphere detected on an extrasolar planet.
