Observations of galaxies and clusters of galaxies indicate that about ____ percent of the matteruniverse is dark matter
a. 5
b. 25
c. 35
d. 45
e. 95
E
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Why did terrestrial planets form in the inner solar system and jovian planets in the outer solar system?
A) As the solar nebula shrank, it settled into a spinning disk and separated into individual planets. B) Denser, heavier materials, such as rocks and metals, settled to the center of the nebula, and therefore, planets that formed there were more likely to be made primarily from rock and metal. C) In the inner part of the nebula, only metals and rocks were able to condense because of the high temperatures, whereas hydrogen compounds, although more abundant, were only able to condense in the cooler outer regions.
What happens to most of the solar neutrinos between the Sun's core and Earth?
What will be an ideal response?
What role does the main sequence mass of the star play in the formation of heavy elements in the giant stage?
What will be an ideal response?
Most naked-eye stars would fall to the top left on the H-R diagram
Indicate whether the statement is true or false