Examlex
A type of star that has turned out to be extremely useful for measuring distances is
Political Lobbying Group
An organization that attempts to influence public policy and government decisions to favor specific interests or causes.
Commerce Clause
A provision in the United States Constitution that grants Congress the power to regulate trade between states and with foreign countries.
Privileges and Immunities Clause
Provisions in the U.S. Constitution and state constitutions protecting citizens from discriminatory treatment by other states.
Full Faith and Credit Clause
A clause in the United States Constitution requiring each state to recognize the public acts, records, and judicial proceedings of all other states.
Q6: An astronomical unit is:<br>A) the distance to
Q8: Astronomers today know a lot about the
Q10: Which of the following is NOT a
Q15: How do quasars demonstrate that the universe
Q16: How do astronomers know what the outer
Q18: The spacecraft that really gave scientists their
Q32: Astronomers can now report that active star
Q34: Which of the following is NOT an
Q35: Astronomers use the term interstellar extinction to
Q35: A new technique called adaptive optics allows