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A massive star can fuse only up to the element silicon in its core.
Arrest
The act of legally detaining a person by authorities on grounds of suspected or proven involvement in criminal activity.
Republicans
A political designation referring to members or supporters of a republican party, which typically advocates for a government in which the people hold power, either directly or through elected representatives.
Expansion Of Slavery
Refers to the period in American history where slavery was extended into new territories and states, intensifying debates over slavery and leading to the Civil War.
White Slaveholder
Denotes a white individual who owns slaves, specifically relevant in the historical context of slavery in the Americas.
Q1: Synchrotron radiation found with active nuclei implies
Q20: A spherical galaxy, like M87, which
Q30: In general, as stars go through the
Q48: While none yet exist, in the very
Q74: Redshift measurements of the visible afterglow of
Q85: Type I supernovae can be used to
Q85: _ galaxies may bridge the gap between
Q86: A quasar's spectral lines are:<br>A)emission lines with
Q88: In the lighthouse model:<br>A)pulsars are observable only
Q94: When observing an object, such as a