Take the challenge!

1. The full moon subtends an angle of approximately
(a) 1/2 degree
(b) 1 degree
(c) 5 degrees
(d) 10 degrees

2. M13, the brightest northern globular cluster, is in which constellation?
(a) Andromeda
(b) Hercules
(c) Orion
(d) Perseus

3. A solstice occurs when
(a) the declination of the Sun is zero degrees
(b) the declination of the Sun is at a maximum or a minimum
(c) the right ascension of the Sun is 0 hours
(d) the right ascension of the Sun is 0 hours or 12 hours

4. The Teapot asterism is part of which constellation?
(a) Aquarius
(b) Ophiuchus
(c) Sagittarius
(d) Scorpio

5. The eastern edge of the Great Square of Pegasus lies very nearly along
(a) the ecliptic
(b) the celestial equator
(c) the celestial meridian marking 0 hours of right ascension
(d) the galactic plane

6. The Pleiades is an example of
(a) an open cluster
(b) a globular cluster
(c) a dwarf galaxy
(d) an emission nebula

7. A star with a declination of -10 degrees is
(a) south of the celestial equator
(b) south of the ecliptic
(c) never visible from the northern hemisphere
(d) always above the horizon as seen from the southern hemisphere

8. Astronomers use red lights around their telescopes because
(a) the lower energy of red light allows batteries to last longer
(b) red light is less likely to affect their night vision
(c) the lower energy of red light is less likely to damage the coatings on their mirrors and lenses
(d) red light affords greater contrast for the blue ink with which most star charts are printed

9. Jupiter is how many astronomical units from the Sun?
(a) 1.0
(b) 1.6
(c) 2.8
(d) 5.2

10. The Horsehead Nebula is located in which constellation?
(a) Cassiopeia
(b) Cygnus
(c) Orion
(d) Sagittarius

11. The discovery that planetary orbits are elliptical was made by
(a) Nicolaus Copernicus
(b) Galileo Galilei
(c) Johannes Kepler
(d) Isaac Newton

12. The circumference of the Earth was first calculated by
(a) Archimedes
(b) Aristotle
(c) Eratosthenes
(d) Ptolemy

13. The gravitational bending of light, as predicted by Einstein, was first observed by
(a) Arthur Eddington
(b) Percival Lowell
(c) Edwin Hubble
(d) Lyman Spitzer

14. At the present epoch, Earth is closest to the Sun in
(a) January
(b) March
(c) June
(d) August

15. Which of the following has not been used to detect exoplanets?
(a) direct photographic imaging of the planet
(b) dimming of light from the parent star as the planet passes in front of it
(c) shifting of the spectral lines of the parent star as the planet causes it to wobble
(d) brightening of the light from the parent star due to gravitational lensing by the planet