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Asteroid impact avoidance
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Asteroid impact avoidance encompasses the methods by which near-Earth objects on a potential collision course with Earth could be diverted, preventing destructive impact events. An impact by a suffici
Damage caused by the Tunguska event. The object was 50–80 meters (160–260 ft) across and exploded 6–10 km (3.7–6.2 mi) above the surface; its explosio
Damage caused by the Tunguska event. The object was 50–80 meters (160–260 ft) across and exploded 6–10 km (3.7–6.2 mi) above the surface; its explosion flattened 30 million trees and shattered windows hundreds of kilometers away.
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.
In a similar manner to the earlier pipes filled with a partial pressure of helium, as used in the Ivy Mike test of 1952, the 1954 Castle Bravo test wa
In a similar manner to the earlier pipes filled with a partial pressure of helium, as used in the Ivy Mike test of 1952, the 1954 Castle Bravo test was likewise heavily instrumented with line-of-sight (LOS) pipes, to better define and quantify the timing and energies of the x-rays and neutrons produced by these early thermonuclear devices. One of the outcomes of this diagnostic work resulted in this graphic depiction of the transport of energetic x-ray and neutrons through a vacuum line, some 2.3
This early Asteroid Redirect Mission artist's impression is suggestive of another method of changing a large threatening celestial body's orbit by cap
This early Asteroid Redirect Mission artist's impression is suggestive of another method of changing a large threatening celestial body's orbit by capturing relatively smaller celestial objects and using those, and not the usually proposed small bits of spacecraft, as the means of creating a powerful kinetic impact, or alternatively, a stronger faster acting gravitational tractor, as some low-density asteroids such as 253 Mathilde can dissipate impact energy.
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
Asteroid impact avoidance
…above – are one of many methods, designed to alter the trajectory of an asteroid to prevent its potential collision with Earth. Damage caused by the Tunguska event. The object was 50–80 meters (160–260 ft) across and exploded 6–10 km (3.7–6.2 mi) above the surface; its explosion flattened 30 million trees and…
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.