One of the discoveries made by the Voyager probes while near Jupiter was
A) Io has a featureless surface that never changes.
B) a thin ring of dust around the equator.
C) the absence of a magnetic field around the giant planet.
D) that the Great Red Spot is uniform and featureless.
E) each of the four large moons produces a strong magnetic field.
B
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Which of the following is a technique that can be used to speed up a spacecraft without the need for extra fuel?
A) a gravitational slingshot, in which the spacecraft gains momentum by flying near a planet B) releasing unnecessary weight after takeoff to make the spacecraft lighter C) flattening after takeoff to make the spacecraft more aerodynamic D) landing on a fast-moving asteroid and relaunching at high speed E) collect material in space that can power the spacecraft
How does the Sun's mass compare with that of the planets?
A) It is a hundred times more massive than all the planets combined. B) It is a thousand times more massive than all the planets combined. C) It is about as massive as all the planets combined. D) It is a thousand times more massive than Earth. E) It is a hundred times more massive than Earth.
Contrast main sequence stars of type B and G
What will be an ideal response?
Virtually all galaxies are moving away from the Milky Way
Indicate whether the statement is true or false