The astronaut who has spent the longest continuous time in space is Valeri Vladimirovich Polyakov who was aboard the Mir space station for 437 days 18 hours from 9 Jan 1994 to 22 March 1995. Gennady Ivanovich Padalka holds the record for the most time spent in space overall at 879 days Continue Reading
Russia
Tunguska: The Largest Impact Event in Recorded History
On the morning of 30 June 1908, a large explosion flattened 2,000 km2 of forest near the Stony Tunguska River in Eastern Siberia. There were no recorded human casualties. Fallen trees at Tunguska, 1927 In 1930, a scientific expedition, lead by Leonid Kulik, recorded the testimony of S Semenov: At breakfast time Continue Reading