When a small galaxy is swallowed by a larger one this is called a(n)?Group of answer choicesMergerCannibalismBlack holeSupernova

Which of the following is not a type of a galaxy?Group of answer choicesSpiralIrregularHubbleElliptical

What is the closest Galaxy to our own called?Group of answer choicesMagellinic CloudsOrionConstellationsCelestial Sphere

It now seems highly likely that in the center of most galaxies is to be foundGroup of answer choicesa super-massive black holea neutron stardusta stellar-mass black hole

A group of extremely young stars containing approximately 5 to 50 hot O and B stars is called a(n)?Group of answer choicesassociationopen clusterglobular clusterplanetary nebulae

Select the three major classifications of galaxies. (Select all that apply.)irregularclustersphericalregularquasarspiralelliptical