Astron.
a cloud of interstellar gas and dust that absorbs and thus obscures the light from stars behind it, appearing as a dark patch in front of a bright nebula or in an otherwise bright area of sky. Also called absorption nebula .
[ 1930-35 ]
Astron.
a cloud of interstellar gas and dust that absorbs and thus obscures the light from stars behind it, appearing as a dark patch in front of a bright nebula or in an otherwise bright area of sky. Also called absorption nebula .
[ 1930-35 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012