Examlex
The black hole at the center of our galaxy is too large to be the remnant of a single star.
Tariffs
Taxes imposed on imported goods and services, intended to raise government revenue or protect domestic industries from foreign competition.
Immigration
The action of coming to live permanently in a foreign country, often leading to significant social, economic, and cultural impacts on the host country.
American Ideals
The fundamental beliefs and values that are considered foundational to American society, including liberty, democracy, equality, and justice.
Anita Whitney
An American political activist involved in early 20th-century movements for social and labor reforms, later convicted under the California Criminal Syndicalism Act.
Q1: Supernova remnants _.<br>A) always contain pulsars, because
Q10: The "big bang" was an explosion of
Q12: Stellar models can easily be accomplished by
Q14: Is dark matter important in other galaxies
Q16: The mass of a galaxy's central black
Q26: Based purely on its size, which of
Q36: Stars larger than about 1.4 solar masses
Q45: The proper interpretation of the Hubble law
Q63: Stars, like our Sun, generate their energy
Q69: Modern observations have shown that the geometry