The most accurate way to determine the surface temperature of a star is to study
a. the pattern of absorption lines from various atoms.
b. the relative intensities of light measured through different photometric filters.
c. the peak wavelength of the star's continuum blackbody spectrum.
d. pattern of emission lines that are on the star's spectrum.
A
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Widmanstätten patterns are mostly seen in stony meteorites
Indicate whether the statement is true or false
The most massive stars generate energy at the end of their lives by fusing iron in their cores
Indicate whether the statement is true or false
Why do astronomers suspect there may be a ninth planet beyond Neptune?
A. The Kuiper Belt is not in the expected position. B. Pluto has more moons than it should. C. Several Trans-Neptunian Objects have elongated orbits yet are all currently closest to the Sun. D. Neptune's orbit extends closer to the Sun than expected.
List at least three things that make Earth unique among the terrestrial planets.
Fill in the blank(s) with the appropriate word(s).