Sawyer put a quarter in the gumball machine, only to find that the machine was not working. He continued to turn the dial on the machine in the hope that he would retrieve a gumball. Unfortunately, after several minutes of forcefully turning the dial, he still did not retrieve a gumball. As a result, Sawyer kicked the machine several times. Kicking the machine is an example of __________.

Physicist’s equations can describe the evolution of the universe since

The cosmic microwave background radiation is not uniform over the sky—it is slightly hotter toward the constellation Leo and slightly cooler in the opposite direction, toward Aquarius. Why?

What method is used to determine the distances of very remote galaxies?

The cosmic microwave background radiation is not uniform over the sky—it is slightly hotter toward the constellation Leo and slightly cooler in the opposite direction, toward Aquarius. Why?

In what way does the study of the collisions of very high-speed nuclear particles with other matter at particle accelerator laboratories help in the understanding of the early universe?

Of the entries in this list of questions about the Milky Way Galaxy, which ONE has been answered at the present time?

What is the “particle horizon”?

Stanley Milgram’s study of obedience took on a special importance in the wake of __________.

How are the Magellanic Clouds, the two nearby satellite galaxies of the Milky Way Galaxy, classified?