NS-2 The Stars, NS3 Naval Knowledge: Naval Logistics, NS3 Naval Knowledge: Military Law

The nature of a star can be best determined from its ____________. - ANSWER-Spectrum A light year is the distance light travels in a _________. - ANSWER-Year The ________________ of a star is its brightness as it appears to an observer on Earth. - ANSWER-Apparent magnitude The following heavenly body is classified as a star. - ANSWER-The Sun The galaxy in which Earth and our known planets exist is _____________. - ANSWER-The Milky Way The Milky Way takes on the shape of a _______. - ANSWER-Disc A concentration of mass so great and dense that no light can escape its gravitational pull is known as a - ANSWER-Black hole Stars can best be classified as - ANSWER-Distant suns in space Most of the bright stars are we see at night are - ANSWER-Supergiant stars The Milky Way galaxy is a(n) - ANSWER-spiral galaxy A light-year is defined as the - ANSWER-cosmic distance that light travels in a year. Stars that are loosely grouped stars, often found in areas where there are glowing masses of dust and gas are called? - ANSWER-Open clusters What term refers to the brightness of a star as compared to the brightness of the Sun? - ANSWER-Luminosity Stars are classified according to their temperature and - ANSWER-color On the spectrum-luminosity diagram, 98 percent of all stars fall into what group? - ANSWER-Main sequence