Which of the following is not a property of elliptical galaxies?Group of answer choicesThey contain mostly old stars.They have little dust and gas.They have prominent spiral arms.Stars are distributed smoothly throughout their volume.

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

All of the following are types of galaxies EXCEPTellipticalirregularspiraleccentric

Which of the following Hubble types is used for unbarred spiral galaxies with loosely wound arms?The recommended time to answer this question is 2.5 minutes.Soru 7YanıtE7S0E0ScSBa

Galaxies and stars in space are found in are found in _______ and the emptiness of space is found in _____.*1 pointfilaments, voidsvoids, filamentsgalaxies, spacespace, galaxiesWe are in the _____ galaxy, ________ cluster,  and the _____ supercluster.*1 pointAndromeda, Milky Way, ReesesMilky Way, Local Group, VirgoMilky Way, Andromeda, Local GroupTwix, Virgo, SagittariusSagittarius, Virgo, Away GroupIf each galaxy contains 1 hundred billion stars, and there are 1 hundred billion galaxies, and 89% of all stars are low mass like the Sun, and 1 in 5 low mass stars like the Sun have planets like Earth in the habitable zone, what is the number of planets that exist in the Universe that are in the habitable zones of their low mass stars? (hint: use your favorite, dimensional analysis! try this on paper!)  Start with 1 Universe, then convert to galaxies and so on. (For 89% use this conversion factor: 89 low mass stars /100 stars)*1 point4.88 x 10^28 planets2.99 x 10^18 planets8.93 x 10^15 planets1.78 x 10^21 planetsWhat is at the center of most galaxies?*1 pointA supermassive black holeA large starA neutron starSagittarius ANothingSelect the following true information about the Milky Way*1 pointSagittarius A is at its centerIt is 13.8 billion years oldIt takes the Sun 225,000,000 years to make its orbit around the galaxyIt is a barred spiral galaxyThe galaxy does not rotateTrue or false, the Milky way is almost a perfect 3D sphere*1 pointTrueFalseMatch the following parts of the Milky Way*4 pointsBulge Disc Halo Blue RegionsMostly young stars, concentrated in the spiral arms Individual stars, globular clusters, dark matter, largest structure in the galaxy Really old stars, gas, dust New star formation from gas and dust Mostly young stars, concentrated in the spiral arms Individual stars, globular clusters, dark matter, largest structure in the galaxy Really old stars, gas, dust New star formation from gas and dust True or false, the Hubble Classification of galaxies shows the evolution of galaxies*1 pointTrueFalseThe difference between spiral and barred spiral galaxies is that...*1 pointBarred spiral rotatesBarred spiral has a bar in the middleSpiral has fewer armsSpiral is distinguished on how tightly wound the arms areE7 are ____ than E0 galaxies.*1 pointsmallerroundermore oblongedStars in elliptical galaxies move with...*1 pointorderly arrangementa spiral shapechaotic motionLenticular galaxies are hybrids between ______ and _____*1 pointLenticularPeculiarSpiralIrregularEllipticalThe difference between irregular and peculiar galaxies is that*1 pointPeculiar has no distinct shapeIrregular is made from collisions of galaxiesPeculiar have a active galactic nucleus

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