What method does "stars that fade" refer to?
A: Transits
B: Radial velocity
C: Astrometry
D: Microlensing
E: Direct imaging
Ans: A: Transits
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Pulsar planets are _____
a. huge gas planets that could be classified as brown dwarfs b. asteroids captured from interstellar space c. observed, but not fully understood d. predicted, but have not been observed e. Earth-like, and may harbor life
The Schwarzschild radius of a black hole depends on
A) the observationally measured radius of the black hole. B) the way in which the black hole formed. C) only the mass of the black hole. D) both the mass and chemical composition of the black hole.
The vertical component of the acceleration of a projectile remains constant during the entire trajectory of the projectile
Indicate whether the statement is true or false
The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III
?
The object’s velocity is negative in region(s)
a.
I.
b.
II.
c.
III.
d.
no regions