Russia – postcrossing

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From: Russia / Moscow
Source: postcrossing
Received: 28 October 2019 (22 days)
Sent: 7 October 2019

Stamp:
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Russia – postcrossing

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“Blue eyes”, Author: Viktoria Novikova

From: Russia / Nizhny Novgorod
Source: postcrossing
Received: 28 October 2019 (21 days)
Sent: 7 October 2019

Stamps:
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Russia – postcrossing

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A fireball fragment (2,5 cm) from the meteor shower in Chelyabinsk, the road near Belonosovo village Etkulskiy district. Photo by S. Kolisnichenko, February 18, 2013

From: Russia / Surgut
Source: postcrossing
Received: 22 October 2019 (15 days)
Sent: 7 October 2019

About:
The Washington Post called the day of the meteor falling an “extraordinary day for the planet”. The fireball strike is considered to be the most energetic impact event recognized for more than a century sice the 1908 Tunguska event. Moreover, it was the first meteorite impact that caused so many injured and hospitalized people.

NASA: “Originally the meteor weighted 10 thousand tons with the diameter of 17 meters. It entered the atmosphere angularly travelling at speed of 18 km per second and after 32,5 seconds it disintegrated. Approximate total impact energy of the fireball in kilotons of TNT explosives at altitude of 15-25 km was 500 kt.”

Stamps:
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