. What is the descri ption for a set of several hundred stars that form together
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. What is the descri ption for a set of several hundred stars that form together and travel together? The Pleiades and Hyades are examples. through space A) open (galactic) cluster B) globular cluster C) galaxy D) black hole t is the "surface" around the center of a black hole, inside of which even light cannot escape? A) light year B) singularity C) event horizon D) pulsar the ame of the cloud of dust and gas out of which the Sun and planets formed about 4.3 billion years ago? A) solar nebula B) moon ball C ) solar constant D) Oort cloud What result, pertaining to the expansion rate of the universe, is suggested by major studies relying on observations of type la supernovae in distant galaxies A) the expansion rate is decelerating B) rate of expansion is accelerating C) expansion of the universe was at a constant rate throughout the observed past D) the expansion rate varied periodically every billion years What is the name of the distant region of the Solar System where billions of these objects including one named after Halley, are believed to have originated? A) Oort cloud B) star cluster C) Orion nebula D) Hyades ch of the following distance measuring methods is used in the Hubble flow - beyo e hundred million parsecs from Earth? A)paralla ntist proposed a formula to estimate possibilities of life existing elsewher ax B) Cepheid variables C) red shifts D) type O stars rse? A) Drake Law relates the distances of remote galaxies to their: A) blue shifts B) velocity C)mass D) type B) Einsteirn C) Hubble D) Guth approximate age of the universe in years? million B) 13.7 billion C) 100,000 D) 100 billion ame of the supercluster of galaxies where the Milky Way and othe group are located? A) Virgo B) Hercules C) Corona D) LepuExplanation / Answer
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