Why do spiral arms tend to be blueish in color?
What will be an ideal response?
Answer: They are regions of enhanced star formation, and in general, only young stars are blue.
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If we observe one edge of a planet to be redshifted and the opposite edge to be blueshifted, what can we conclude about the planet?
A) The planet is rotating. B) We must actually be observing moons orbiting the planet in opposite directions, not the planet itself. C) The planet is in the process of falling apart. D) The planet is in the process of formation.
A carbon-detonation supernova starts out as a white dwarf in a close binary system
Indicate whether the statement is true or false
In a single-slit experiment, the width of the slit is slowly decreased. The diffraction pattern
A. remains unchanged. B. spreads out. C. shrinks together. D. fades away.
If the maximum possible accuracy in measuring the energy of a particle increases, the maximum possible accuracy in measuring its lifetime will
A) increase. B) decrease. C) not be affected.