Examlex
Today the majority of the mass of the universe is already in the form of black dwarfs, the solution to the "dark matter" problem.
Lucy Stone
A prominent American abolitionist and suffragist in the 19th century, known for her advocacy for women's rights and abolition of slavery.
Fifteenth Amendment
An amendment to the U.S. Constitution that prohibits the federal and state governments from denying a citizen the right to vote based on that citizen's "race, color, or previous condition of servitude."
Susan B. Anthony
An American social reformer and women's rights activist who played a pivotal role in the women's suffrage movement.
Reconstruction
The period following the Civil War from 1865 to 1877 in the United States, aimed at rebuilding the South and integrating former slaves into society as free citizens.
Q2: For finding the distance to M31, Hubble
Q8: A star has a parallax of 0.01
Q11: Most of the new star formation in
Q19: When a low- mass star runs out
Q27: Right ascension in the sky is very
Q101: Variable stars are ones whose changes over
Q109: The Virgo Cluster of galaxies is not
Q120: Globular clusters are dominated by bright red
Q121: Why is it that the quasars we
Q141: If a star has a parallax of