1. Given that the cosmic calendar compresses the 14-billion-year history of the universe into 1 year, each month must represent a little more than:

2. In real time, Earth formed about 4½ billion years ago. The cosmic calendar shows that this was:

3. In real time, dinosaurs went extinct about 65 million years ago. On the scale of the cosmic calendar, which compresses the 14-billion-year history of the universe into 1 year, this was:

4. On the scale of the cosmic calendar, which compresses the 14-billion-year history of the universe into 1 year, your parents were born:

True or False: Given that the cosmic calendar is set up so that the stroke of midnight on Dec. 31 represents the “present,” we should remake the cosmic calendar every year to account for the fact that the “present” is always moving forward in time.