Astronomy Ch.10 (Deaths of Stars) Crossword
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
                                               
 
 
Down: 1) the point of gravitational equilibrium between two orbiting stars through which matter can flow from one star to the other 3) the explosion of a star, thought to be caused by the transfer of matter to a white dwarf6) a moon with an orbit that has small eccentricity and low inclination to the equator of its parent planet and is prograde. regular moons are thought to have formed with their respective planets rather than having been captured7) the nuclear fusion process that combines three helium nuclei (alpha particles) to make one carbon nucleus 9) from Latin, meaning "new;" a sudden brightening of a star making it appear as a new star in the sky; believed to be associated with eruptions on white dwarfs in binary systems12) the explosion of a massive star that develops an iron core and collapses after it has lost its outer layers of hydrogen13) a supernova explosion caused by the collapse of a white dwarf 14) a measure of the tendency of a rotating body to continue rotating. mathematically, the product of mass, velocity, and radius17) a cluster of 100 to 1000 stars with an open, transparent appearance, usually relatively young and located in the disk of the galaxy. the stars are not tightly grouped Across: 2) in the HR diagram, stars fusing helium in a shell and evolving back toward the red giant region4) the expanding shell of gas marking the site of a supernova explosion5) the maximum mass of a white dwarf, about 1.4 solar masses. a white dwarf of greater mass cannot support itself and will collapse8) radiation emitted when high-speed electrons move through a magnetic field10) the explosion of a star, thought to be caused by the transfer of matter to a white dwarf11) an expanding shell of gas ejected from a star during the latter stages of its evolution12) the point in an HR diagram at which a cluster's star turns off the main sequence and move toward the red-giant region, revealing the approximate age of the cluster 15) points of gravitational stability in the orbital plane of a binary star system or of a planet and its moon16) the whirling disk of gas that forms around a compact object such as a white dwarf, neutron star, or black hole as matter is drawn in18) the volume of space a star controls gravitationally within a binary system19) a supernova explosion in which the spectrum contains no hydrogen lines. 20) a star cluster containing 100k to 1 million stars in a sphere around 75ly in a diameter that is generally old, metal-poor, and found in the spherical component of a galaxy21) the dumbbell-shaped surface that encloses the Roche lobes around a close binary star22) extremely high-density matter in which pressure no longer depends on temperature due to quantum mechanical effects23) a supernova explosion caused by the collapse of a massive star24) the explosive ignition of helium fusion that takes place in a some giant stars
 

 

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