For the Week ending 08/29/08
Directions: Choose the word that matches with the definition and appropriately fits into the blank space in the sentence.
a branch of metaphysics that deals with the nature of the universe
Einstein helped shape the _______ of an infinite universe, continually expanding. |
referring to the sun as the center (of the universe.)
Copernicus espoused the _______ theory of the universe, contradicting the geocentric model of Ptolemy. |
highly magnetized rotating neutron stars which emit radio wave electromagnetic radiation
The word _______ is a contraction of "pulsating star." |
relating to the sky or visible heavens: the sun, moon, and stars; ethereal, otherworldly
An astronomical object is sometimes referred to as a _______ body. |
a stellar explosion in which the star may reach a maximum intrinsic luminosity one billion times that of the sun
The tremendous energy radiated by a _______ is produced by nuclear fusion. |