(astronomy) the nebular hypothesis of the origin of the solar system.
Below the frame center and just to the right of Alnitak lies the Horsehead nebula, a dark indentation of dense dust that has perhaps the most recognized nebular shapes on the sky.
The most obvious advantage is that'because of their inability to scatter appreciably, nebular radio waves completely and genuinely delineate the distribution of nebular gas.
Radio astronomers are now able to synthesize the response of a partially filled aperture of large diameter and thus to map variations in nebular brightness.
The remnant nebular gas pervades the interplanetary space.
In the absence of an appreciable magnetic field, the ensemble of nebular electrons interacts with ions to emit weak continuous radiation by free-free and free-bound transitions.
Within the Iris, dusty nebular material surrounds a hot, young star.
Wu Tongchun's nebular art is expressed by the character of traditional Chinese painting.
The magnitude of the turbulence then follows directly from the observed line with if the nebular gas temperature is known.
Kant and Laplace nebular hypothesis
Kant-Laplace nebular theory
國文精選館
