Astronomy Quizes

http://www.astronomyquiz.info/a-z.html
Not all of these quizes are relevant, but some of them are helpful.
They're also a bit short.

http://www.factmonster.com/quizzes/constellation/1.html

http://www.softschools.com/quizzes/science/stars_and_constellations/quiz816.html

Apod 2.2

This nebula, NGC 6164, was created by a rare O-type star, which was 40 times larger than the sun. The star in the center of this image is only 3 million years old. When the star's age doubles, it will explode and create a supernova explosion. The blue halo surrounding the star is caused by an earlier phase of the O star in the center.

APOD 2.3

This is a picture of some cosmic clouds inside the emission nebula IC 1805. The clouds have been modified and shaped by winds and radiation from stars in the star cluster Melotte 15, which is about 1.5 million years old. This nebula is 7,500 light years away from Earth.

Apod 2.1

This is a picture of a cosmic cloud inside the van den Bergh Catalog of stars surrounded by reflection nebulae. The blue color of the cloud is caused by the same process that gives Earth its blue skies. The catalog that contains this cloud is around 5 light years across.