AST EXAM SCRIPT 2026 FULL SOLUTION
PRACTICE
◉ To figure out what you weigh on the surface of the Moon (how
much gravity there pulls you downward), you need to know
A
just the mass of the Moon
B
just the distance from the Moon's center to its surface
C
just the size of the Moon's orbit around the Earth (its semi-major
axis, say)
D
which part of its orbit the Moon is in
E
two of the above factors. Answer: E
◉ When a comet like Comet Hale-Bopp comes closest to the Sun in
its orbit, we say that it is at:
A
circular satellite velocity
PRACTICE
◉ To figure out what you weigh on the surface of the Moon (how
much gravity there pulls you downward), you need to know
A
just the mass of the Moon
B
just the distance from the Moon's center to its surface
C
just the size of the Moon's orbit around the Earth (its semi-major
axis, say)
D
which part of its orbit the Moon is in
E
two of the above factors. Answer: E
◉ When a comet like Comet Hale-Bopp comes closest to the Sun in
its orbit, we say that it is at:
A
circular satellite velocity
