Astrophysics (index)about

Cosmic Dust

(Dust)
(cosmic dust is dust in space such as interstellar dust)

Cosmic Dust is a general term for dust in space, which includes intergalactic dust, Interstellar Dust, and interplanetary dust. Dust leads to Extinction, making observation of stars and other astronomical bodies more difficult, but is also observed both for itself and for the conclusions that can be drawn from reradiation and scattering.

Though termed "dust", it can be orders-of-magnitude smaller than everyday dust: in the Interstellar Medium, what are termed "dust particles" are a few molecules, though in the Interplanetary Medium, presumably all sizes particles exist, from micrometeoroids down.

Infrared can be used to see through dust, and extinction, scattering, Absorption, and Polarization reveal information about the dust itself.

Much dust is thought to be formed by stars toward the end of their Main Sequence, such as Red Giants. It is also formed or scattered by Novae and supernovae. The term Nebula has come to be most commonly used for clouds that include sufficient interstellar dust to be opaque to Visible Light.


(medium,dust)
http://en.wikipedia.org/wiki/Cosmic_dust

Referenced by:
Baade's Window
BICEP2
Bok Globule
Bondi Radius
Carbon Star
Cassini
Circumgalactic Medium (CGM)
Chondrite
Cosmic Infrared Background (CIB)
Circumstellar Disk
COMPLETE Survey
Debris Disk
Elliptical Galaxy
Extra Solar Planet
Extinction
Far Infrared (FIR)
Galactic Center
Galactic Halo
Galaxy Merger
Helium Runaway Shell
Hot DOG
Hubble Ultra-Deep Field (HUDF)
Hydrogen (H)
IC 342
Ice
Intergalactic Medium (IGM)
Interplanetary Medium (IPM)
Interstellar Medium (ISM)
James Clerk Maxwell Telescope (JCMT)
Kilometer Size Barrier
Luminous Infrared Galaxy (LIRG)
Mass Spectrometer
Meter Size Barrier
Morgan Classification
Milky Way Chemical Evolution
Near Infrared (NIR)
Nebula
New Horizons (NF1)
OH/IR Source
1.3mm Observation
Orion Nebula (M42)
Planetary Embryo
Planetesimal
Planet Formation
Polarization
Poynting-Robertson Effect
Protoplanetary Disk (PPD)
Reddening
Reflection Nebula
Scintillometry
SCUBA
Spectral Energy Distribution (SED)
Star Formation Rate (SFR)
Star-Forming Region (SFR)
Submillimeter Galaxy (SMG)
Supernova (SN)
Solar Nebula
Spectrometer
Spiral Galaxy
Starburst Galaxy
Star Formation (SF)
Sublimation
21cm Line
Trapezium Cluster
Voyager
Wide-Field Infrared Survey Explorer (WISE)

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