Comet nucleus
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The nucleus is the solid, central part of a comet, formerly termed a dirty snowball or an icy dirtball. A cometary nucleus is composed of rock, dust, and frozen gases. When heated by the Sun, the gase
The nucleus of Comet Tempel 1
Tempel 1 and Hartley 2 compared
C/2006 W3 (Christensen) – emitting carbon gas
Surface of the nucleus of Comet 67P from 10 km away as seen by Rosetta spacecraft
Comet
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A comet is an icy, small Solar System body or interstellar object that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitat
Comet nucleus
…The nucleus is the solid, central part of a comet, formerly termed a dirty snowball or an icy dirtball. A cometary nucleus is composed of rock, dust, and frozen gases. When heated by the Sun, the gases…
Comet Hale–Bopp after passing perihelion in April 1997
Structure of a comet
Comet 81P/Wild exhibits jets on light side and dark side, stark relief, and is dry.
Hubble image of Comet ISON shortly before perihelion.