The largest moon in the solar system, bigger but not as massive as Mercury, is:
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The star’s __________ plays the major role in determining it…
The star’s __________ plays the major role in determining its main sequence position and luminosity.
Most naked-eye stars would fall to the bottom right on the H…
Most naked-eye stars would fall to the bottom right on the H-R diagram.
The Maunder Minimum refers to a period of sustained solar___…
The Maunder Minimum refers to a period of sustained solar__________ from 1645 until about 1715.
Hydrogen lines are strongest in class A stars.
Hydrogen lines are strongest in class A stars.
The Sun’s mass is over a million times that of the Earth.
The Sun’s mass is over a million times that of the Earth.
The nearest star system to our Sun, Alpha Centauri, is still…
The nearest star system to our Sun, Alpha Centauri, is still over a parsec distant.
Stars of the main sequence, like our own, are all converting…
Stars of the main sequence, like our own, are all converting __________ into helium.
If a binary is detected by periodic shifts in its spectral l…
If a binary is detected by periodic shifts in its spectral lines, it is a __________ binary.
On the H-R diagram, the bright blue stars that dominate the…
On the H-R diagram, the bright blue stars that dominate the naked-eye sky lie: