Examlex
Reflection nebulae look blue because they are reflecting light from a very hot source.
Republican Congressional
Pertaining to a period or context in which the Republican Party holds significant power or influence in the United States Congress.
Andrew Johnson
The 17th President of the United States, serving from 1865 to 1869, known for his efforts to restore the southern states after the Civil War and his subsequent impeachment.
Thaddeus Stevens
A 19th-century U.S. politician known for his fierce advocacy for the abolition of slavery and his role in the Reconstruction era.
Confederate States
refers to the 11 southern states that seceded from the Union in 1860-1861, leading to the American Civil War.
Q5: White dwarfs have such a low luminosity
Q8: The Algol paradox is explained by considering<br>A)
Q23: Herschel's grindstone and Kapteyn's star system were
Q23: The diagram below illustrates the orbit of
Q24: Cygnus X-1 and LMC X-3 are black
Q32: The most luminous galaxies in blue wavelengths
Q37: There are _ nanometers in one meter.<br>A)
Q50: The disk of the galaxy is older
Q52: If the Moon's orbital plane was aligned
Q63: Modern astronomers suspect the corona is heated