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Meteorite. The 60- tonne, 2.7 m-long (8.9 ft) Hoba meteorite in Namibia is the largest known intact meteorite. [1] A meteorite is a rock that originated in outer space and has fallen to the surface of a planet or moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical interactions with the ...
Tunguska event. / 60.90306°N 101.90972°E / 60.90306; 101.90972. The Tunguska event was a large explosion of between 3 and 50 megatons [2] that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai ), Russia, on the morning of 30 June 1908. [1] [3] The explosion over the sparsely populated East ...
A meteoroid shown entering the atmosphere, causing a visible meteor and hitting the Earth's surface, becoming a meteorite. A meteoroid ( / ˈmiːtiərɔɪd / MEE-tee-ə-royd) [1] is a small rocky or metallic body in outer space . Meteoroids are distinguished as objects significantly smaller than asteroids, ranging in size from grains to objects ...
Impact event. Damage to trees caused by the Tunguska event. The object, just 50–80 metres (150–240 feet) across, exploded 6–10 km (4–6 miles) above the surface, shattering windows hundreds of km away. An impact event is a collision between astronomical objects causing measurable effects. [1]
NASA's Lucy, launched in 2021, would visit eight asteroids, one from the main belt and seven Jupiter trojans; it is the first mission to trojans. The main mission would start in 2027. NASA's Psyche, launched in October 2023, is intended to study the large metallic asteroid of the same name, and is on track to arrive there in 2029.
NASA visualization and narration of the Chelyabinsk meteor air burst. A meteor air burst is a type of air burst in which a meteoroid explodes after entering a planetary body's atmosphere. This fate leads them to be called fireballs or bolides, with the brightest air bursts known as superbolides. Such meteoroids were originally asteroids and ...
A. Ablation – the process of a meteorite losing mass during the passage through the atmosphere. Acapulcoite – a group of primitive achondrites. Accretion – the process in which matter of the protoplanetary disk coalesces to form planetesimals. Achondrite – a differentiated meteorite (meaning without chondrules ).
Big Bertha in the Lunar Sample Laboratory Facility. Within this rock is an Earth meteorite (lunar sample 14321,1027) that is 4 billion years old. Big Bertha on the lunar surface prior to collection. It is above the exact center of the photo and lies between the wheel tracks made by the Modular Equipment Transporter (MET) or rickshaw-type ...