Discuss the important features that allow space-based telescopes to search for transiting exoplanets
What will be an ideal response?
Space-based telescopes are exceptionally stable spacecraft, so that they can track small changes without shifting. They are positioned to continuously monitor a region of the sky, and they are not limited to Earth's nighttime-only viewing. They have wide fields of view compared to most space telescopes, so they can monitor thousands of stars at once.
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How does the traditional theory of the formation of the galaxy explain the origin of globular clusters?
a. They formed in the disk and later were ejected to the halo. b. They formed in other galaxies and were captured by close interactions. c. They build over time from the collision of stars in the halo. d. They formed early on during the free-fall collapse of the proto-galactic material.
A baseball is struck by a batter at an angle such that it reaches its maximum height at the location of the pitcher – and just grazes the top of the pitcher’s head (at an elevation of 1.50m above the launch point of the baseball). The pitcher is a horizontal distance of 20.0m from the point at which the ball was struck. What was the launch speed for the baseball?
A. 37 m/s B. 36m/s C. 51m/s D. 27m/s
Visible light from a distant star can be spread into a spectrum by using a glass prism or
A) a diffraction grating. B) adaptive optics. C) a telescope. D) a flat glass mirror.
A paint pigment that absorbs blue light and gives off red light
A) is fluorescent. B) is phosphorescent. C) can be both of these D) neither of these