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An achondrite [1] is a stony meteorite that does not contain chondrules. [2] [3] It consists of material similar to terrestrial basalts or plutonic rocks and has been differentiated and reprocessed to a lesser or greater degree due to melting and recrystallization on or within meteorite parent bodies.
It then becomes a meteor and forms a fireball, also known as a shooting star; astronomers call the brightest examples "bolides". Once it settles on the larger body's surface, the meteor becomes a meteorite. Meteorites vary greatly in size. For geologists, a bolide is a meteorite large enough to create an impact crater. [2]
A meteoroid shown entering the atmosphere, causing a visible meteor and hitting the Earth's surface, becoming a meteorite. A meteoroid (/ ˈ m iː t i ə r ɔɪ d / MEE-tee-ə-royd) [1] is a small rocky or metallic body in outer space.
A chondrite / ˈ k ɒ n d r aɪ t / is a stony (non-metallic) meteorite that has not been modified by either melting or differentiation of the parent body. [a] [1] They are formed when various types of dust and small grains in the early Solar System accreted to form primitive asteroids.
(Photo credit: Getty Images) The first full night of astronomical winter is the longest night of the year and is made even more special by the annual Ursid meteor shower. The Ursids will peak on ...
The orbit of the comet has a striking similarity with the orbit of the weak December sigma Virginids (#428) meteor shower, which peaks on 20–22 December, but seems to be active from December 1 to January 10. The shower seems to be the same as the epsilon Virginids (#513). The peak zenithal hourly rate is about 1.5 for visual meteors. [4] [5] [6]
The annual Orionid meteor shower is set to peak Sunday night into Monday at a rate of 10 to 20 meteors per hour. ... (VCG/Getty Images) ... IHOP is giving away free pancakes this week. Lighter ...
This diagram illustrates the large-scale structures interpreted in the shaded-relief image. The Weaubleau structure is a probable meteorite impact site in western Missouri near the towns of Gerster, Iconium, Osceola, and Vista.