Astronomers Think Most Galaxy Interactions Took Place at Redshifts of Greater

question 37

Multiple Choice

Astronomers think most galaxy interactions took place at redshifts of greater than 1 because:

• A)stars were bigger.
• B)galaxies were bigger.
• C)galaxies were smaller.
• D)clusters were more diffuse.
• E)clusters were more compact.

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Definitions:

Continental Crust

The layer of igneous, sedimentary, and metamorphic rocks that forms the continents and the areas of shallow seabed close to their shores.

Felsic Composition

Rocks rich in silica and aluminum, characterized by lighter minerals like quartz and feldspar.

Decompression

The reduction in pressure exerted on a material, often leading to changes in its physical state or phase.

Melting Mantle

The process in which the Earth's mantle, the layer between the crust and the core, experiences partial melting to form magma.