Exam 1: Discovering the Night Sky

Leap-year corrections in the calendar are necessary to account for the

On December 1 at 10:00 P.M., the bright star Procyon will just be rising on the eastern horizon. When would this star rise on Christmas Day (24 days later)?

Which of these directions remains fixed in the sky relative to an observer's horizon?

In astronomy, what is the difference between "revolution" and "rotation"?

If observed carefully night by night, a particular star will be seen to rise

The constellation whose stars are used as pointers to the north celestial pole in the northern hemisphere at this time in history is

When the Moon is in its gibbous phase, the right ascensions of the Sun and the Moon differ by

Which one of these is NOT a recent astronomical discovery?

In which way does the Moon move day by day in the sky, against the background of stars, when viewed from Earth?

If an observer were standing on the equator, which of these positions in the sky would pass through their zenith at some time in one 24-hour period?

The angle between an observer's horizon and the north celestial pole is governed by

After Aquarius, the vernal equinox will move into the constellation

If a star is described as being in the constellation Leo, a modern astronomer knows that it is

Which of these years will be a leap year?

One major difference between the Sun and the Moon in the sky is that

The motion of the Moon across the sky, against the background of stars, is approximately

If an observer watches (or photographs) stars near the north celestial pole for a period of several hours, in what basic pattern do they appear to move?

What was the declination of the Sun on March 21 this year?

10⁴ × 10⁸ =

If the direction of Earth's rotation about its axis were reversed but the direction of its revolution around the Sun remained the same, the sidereal day would be