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Three earth/space science questions? An astronomer would most likely user a parallax to....?
An astronomer sees two stars in the sky. Both stars are equally far from Earth, but the first star is dimmer than the second star. Which of the following is a valid conclusion about the first star?
It is larger than the second star.
It is smaller than the second star.
It is older than the second star.
It is younger than the second star.
Which of the following is a massive star that has reached the end of its stellar evolution?
neutron star
red giant
stellar nebula
white dwarf
An astronomer would most likely use parallax to
see the Doppler shift in a star.
measure the distance to a star.
measure the temperature of a star.
see the emission spectrum of a star.
2 Answers
- 8 years agoFavorite Answer
1) the first star can be either small or old or even both!
2)red giant is a massive star. (Nebula is NOT a star... It's the gaseous remains of a dead or exploded star.... It's where new stars are born)
3) Parallax method is generally used to measure the distance... And the other three are determined later using these values!
Source(s): Some books I've read! - 4 years ago
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