64. Due to the dust in the interstellar medium, a star will appear to an observer on Earth to be a. brighter and cooler than it really is. b. brighter and hotter than it really is. c. fainter and cooler than it really is.
hoth.ncat.edu/~michael/moonstruck/astrotrivia/stars.htm... hoth.ncat.edu/~michael/moonstruck/astrotrivia/stars.html
The Interstellar Medium: Dust ... Another way to analyze starlight is to pass it through a spectrograph, which separates photons of different wavelengths. When we examine the spectrum of an ordinary star, we see a large number of narrow absorption lines due to the gas in the outermost layer of the star's atmosphere.
zuserver2.star.ucl.ac.uk/~msw/teaching/ism_dust_files/i... zuserver2.star.ucl.ac.uk/~msw/teaching/ism_dust_files/ism_dust.html
In certain places in the Galaxy, the interstellar dust is so dense that we can readily see its effects, ... Extinction: distant stars appear fainter due to absorption and ... reaches the Earth! In the infrared (~1-100 μm) and at longer ... observer will see the star as reddened because of scattering of blue light. ...
www.physics.queensu.ca/~phys216/ch14A.pdf
To an observer on Earth, dust in the interstellar medium will cause a star to appear ... require(s) that a young hot star (T 25000 K) be relatively nearby. .... The emission lines from O III are called forbidden because they cannot occur in laboratories on Earth due to the much greater pressure of the gas on Earth. ...
www.physics.unt.edu/~roberts/Pics/Spring/TESTprep2/CHP%... www.physics.unt.edu/~roberts/Pics/Spring/TESTprep2/CHP%2010.doc
Interstellar medium - Wikipedia, the free encyclopedia
Source
In astronomy, the interstellar medium (or ISM ) is the gas and dust that pervade interstellar space: the matter that exists between the stars within a galaxy. It fills interstellar space and blend...
en.wikipedia.org/wiki/Interstellar_medium
Apparent Magnitude The apparent brightness of an object in the sky as it appears to an observer on Earth. Bright objects have a low apparent magnitude while dim objects will have a higher apparent magnitude. ... Interstellar Medium The gas and dust that exists in open space between the stars.
aslc-nm.org/glossary.html
In astronomy, the interstellar medium (or ISM) is the gas and dust that pervade interstellar space: the matter that exists between the star systems within a galaxy. ... Therefore, it is nearly impossible to see light emitted at that wavelength from a star farther than a few hundred light years from Earth, because most of it...
www.answers.com/topic/interstellar-medium-2 www.answers.com/topic/interstellar-medium-2
27. Due to the dust in the interstellar medium, a star will appear to an observer on Earth to be ... 32. A star will experience a helium flash if ... a. the expelled outer envelope of a medium mass star.
faculty.uca.edu/~saustin/1401/Exam02_F99_a.html
b. The star is moving away from Earth ... 13. Due to the dust in the interstellar medium, a star will appear to an observer on Earth to be ... c. all colors coming from the star except blue are absorbed by the Earth's atmosphere...
faculty.uca.edu/~saustin/1401/Exam02_sp01_a.html
accretion disk; A relatively flat sheet of gas and dust surrounding a newborn star, a black hole, or any massive ... The part of astronomy that deals principally with the physics of the universe, including luminosity, density, temperature, and the chemical composition of stars, galaxies, and the interstellar medium.
imagine.gsfc.nasa.gov/docs/dictionary.html