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Tunguska event
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The Tunguska event was a large explosion of between 3 and 50 megatons TNT equivalent that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate, Russia, on the morning of 30 June 1908
Trees knocked down and burned by the blast. (image from over two decades after the event)
Trees knocked down and burned by the blast. (image from over two decades after the event)
Tunguska marshes, near the site of the explosion. This photo was published in the magazine Around the World in 1931. The original photo was taken betw
Tunguska marshes, near the site of the explosion. This photo was published in the magazine Around the World in 1931. The original photo was taken between 1927 and 1930 (presumptively no later than 14 September 1930).[citation needed]
Sample of burn damaged tree, museum of Moscow State University
Sample of burn damaged tree, museum of Moscow State University
Thin section of a fragment of "John's stone" from the epicentre of the Tunguska event. "John's stone" was suspected of being a Tunguska meteorite frag
Thin section of a fragment of "John's stone" from the epicentre of the Tunguska event. "John's stone" was suspected of being a Tunguska meteorite fragment, but is in fact a metamorphic, terrestrial rock.
Impact event
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An impact event is a collision between astronomical objects causing measurable effects. Impact events have been found to regularly occur in planetary systems, though the most frequent involve asteroid
Tunguska event
…wide. The asteroid approached from the east-south-east, probably with a relatively high speed of about 27 km/s. Though the incident is classified as an impact event, the object is thought to have exploded at an altitude of 5–10 km (3–6 mi) rather than hitting the Earth's surface, leaving no impact crater. The…
Frequency of small asteroids roughly 1 to 20 meters in diameter impacting Earth's atmosphere.
Frequency of small asteroids roughly 1 to 20 meters in diameter impacting Earth's atmosphere.
A bolide undergoing atmospheric entry
A bolide undergoing atmospheric entry
Eugene Merle Shoemaker was first to prove that meteorite impacts have affected the Earth.
Eugene Merle Shoemaker was first to prove that meteorite impacts have affected the Earth.