Around which planet of the Solar System does the above moon revolve?
1 point
Your answer
The globular cluster Messier 13 lies within which constellation?
1 point
Clear selection
What percentage of the night sky is NOT included within any of the 88 recognized constellations?
1 point
Clear selection
How many moons of the Solar System did Galileo discover?
1 point
Your answer
Redshift and blueshift are both due to frequency changes of electromagnetic waves, an effect named for which 19th century physicist?
1 point
Clear selection
The light from which star was used to activate the lights of the “Century of Progress Exposition”, officially opening the 1933 World’s Fair in Chicago?
2 points
Clear selection
What is called the outermost region of the Sun’s atmosphere?
2 points
Your answer
The predecessor organization of NASA was known by which initials?
2 points
Clear selection
What was the aperture of the largest telescope of the 19th century?
2 points
Clear selection
Which astronomer built the above telescope?
3 points
Clear selection
The accepted maximum mass for a stable white dwarf star is about how many solar masses?