Question and answer
A galaxy whose stars are arranged in a disk with arms that surround a central bulge is a _____ galaxy. irregular elliptical cluster spiral group
A galaxy whose stars are arranged in a disk with arms that surround a central bulge is B.a spiral galaxy
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User: A galaxy whose stars are arranged in a disk with arms that surround a central bulge is a _____ galaxy. irregular elliptical cluster spiral group

Weegy: A galaxy whose stars are arranged in a disk with arms that surround a central bulge is B.a spiral galaxy
LindsayBrooke|Points 175|

User: Astronomers have proposed the existence of an unexplained force that is causing the expansion of the universe to accelerate. What do they call this force? dark matter dark space dark stars dark energy dark holes

User: An elliptical galaxy has _____. a flattened disk, arms, and a central bulge no recognizable pattern of stars stars symmetrically dispersed in a spherical or flattened shape a combination of shapes

Weegy: An elliptical galaxy has stars symmetrically dispersed in a spherical or flattened shape.
rugmaker|Points 2411|

User: At present, scientists expect the universe to _____. gradually stop its expansion and then begin to shrink in size gradually stop its expansion and then remain at a constant size gradually stop its expansion, pause, and then resume expanding continue to expand and heat up forever continue to expand and cool forever

Weegy: shrink
mandyplatinum|Points 31|

User: Unexpected orbital velocities of stars around the centers of galaxies led astronomers to predict the existence of dark _____. energy forces matter space galaxies

Weegy: C. matter
workaholicmom|Points 4684|

User: Most irregular galaxies are thought to have formed _____. from nebulas that cooled very quickly right after the big bang from cosmic background radiation from collisions between other galaxies

Weegy: from collisions between other galaxies
mythmoh|Points 5349|

User: In looking for other planets that might have life, astronomers focus especially on finding planets that _____. are the same size as Earth have rocky surfaces have liquid water have nitrogen-filled atmospheres

Weegy: C.have liquid water. In looking for other planets that might have life, astronomers focus especially on finding planets that have liquid water.
eturker|Points 2738|

User: Why is there a minimum mass for an object to become a star? Smaller objects cannot be detected from Earth. Smaller objects cannot hold planets in orbit. Smaller objects cannot generate enough pressure to start hydrogen fusion. Smaller objects do not have hydrogen for fusion.

Weegy: Smaller objects cannot hold planets in orbit
user1583|Points 1061|

User: The Sun has six regions or layers. Identify the Sun's layers, beginning with the innermost and moving out.

Weegy: True
Narkotiq|Points 322|

User: The Sun has six regions or layers. Identify the Sun's layers, beginning with the innermost and moving out. Innermost, 2nd innermost, 3rd innermost, 4th innermost, 5th innermost, Outermost

Weegy: Core: The core is the innermost layer of the sun and it is a source for all the Sun's energy. [ Radiation Zone: Once the energy is produced in the core of the sun, it has to travel from the solar center to the outer regions. Convection Zone: Ranging from 0.7 solar radii to 1.0 solar radii, the material in the Sun is not that much dense or hot to transfer the heat energy from interior to outward. Photosphere: Photosphere is the visible surface of the Sun. Above the photosphere, sunlight is free to disseminate into space and its energy escapes the Sun completely. Chromosphere: This a thin layer present above the visible surface, which is about 2,000 km thick, specifically dominated by a spectrum of emission and absorption lines. Corona: The corona is the outer atmosphere of the Sun, which is much larger in volume than the Sun itself. ]
Expert answered|jeifunk|Points 7982|

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Asked 12/3/2012 6:40:35 AM
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