|
Search over 100 encyclopedias and dictionaries: |
Research categories | Follow us on Twitter |
Research categories
View all topics in the newsView all reference sources at Encyclopedia.com |
|||
|
interstellar matter
interstellar matter matter in a galaxy between the stars, known also as the interstellar medium. Distribution of Interstellar Matter Compared to the size of an entire galaxy, stars are virtually points, so that the region occupied by the interstellar matter constitutes nearly all the physical... Read more |
|
infrared astronomy
infrared astronomy study of celestial objects by means of the infrared radiation they emit, in the wavelength range from about 1 micrometer to about 1 millimeter. All objects, from trees and buildings on the earth to distant galaxies, emit infrared (IR) radiation. The study of such radiation from... Read more |
|
stellar populations
stellar populations two broadly contrasting distributions of star types that are characteristic of different parts of a galaxy . Population I stars are young, recently formed stars, whereas population II stars are old and highly evolved. Population II stars are formed early in the history of the... Read more |
|
|
stellar evolution
stellar evolution life history of a star , beginning with its condensation out of the interstellar gas (see interstellar matter ) and ending, sometimes catastrophically, when the star has exhausted its nuclear fuel or can no longer adjust itself to a stable configuration. Because a star's total... Read more |
|
brown dwarf
brown dwarf in astronomy, celestial body that is larger than a planet but does not have sufficient mass to convert hydrogen into helium via nuclear fusion as stars do. Also called "failed stars," brown dwarfs form in the same way as true stars (by the contraction of a swirling cloud of ... Read more |
|
Cepheid variables
Cepheid variables , class of variable stars that brighten and dim in an extremely regular fashion. The periods of the fluctuations (the time to complete one cycle from bright to dim and back to bright) last several days, although they range from 1 to 50 days. These stars are important because the... Read more |
|
Oort cloud
Oort Cloud The Oort cloud is a vast swarm of some 2 trillion comets orbiting our star in the most distant reaches of our solar system, extending from beyond the orbits of Neptune and Pluto out to 100,000 times the Earth-Sun distance—nearly one-third the distance to the... Read more |
|
Horsehead Nebula
Horsehead Nebula dark nebula located in the constellation Orion; designated IC 434 or B 33. It consists of a cloud of nonluminous interstellar matter resembling the outline of a horse's head and appears against the background of a bright emission nebula. The Horsehead Nebula measures about 4... Read more |
|
Thomas Gold
GOLD, THOMAS(b. Vienna, Austria, 22 May 1920; d. Ithaca, New York, 22 June 2004),cosmology, astrophysics, geophysics, space science, physiology of hearing.Gold, together with Fred Hoyle and Hermann Bondi, originated the steady state model of the universe, in competition with the previously existing... Read more |
|
|
plasma
plasma in physics, fully ionized gas of low density, containing approximately equal numbers of positive and negative ions (see electron and ion ). It is electrically conductive and is affected by magnetic fields. The study of plasma, called plasma physics, is especially important in research... Read more |
No reference documents or articles match the search term New star forming from interstellar cloud B335
Suggestions: