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Home Q & A Board Science-Related Homework Help Physics Astronomy
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Eric8925 Eric8925
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6 years ago
The brightest stars of a young open cluster will be:
 
  A) Cepheid variables.
  B) massive blue main sequence stars.
  C) red giants.
  D) yellow main sequence stars like the Sun.
  E) T Tauri variables.

Question 2

How does the data from ALMA provide direct evidence for nebular theory?
 
  A) It shows concentric gaps in the disk which are almost certainly regions being cleared as planets form.
  B) We can see large planets forming.
  C) The amount of energy being radiated by the star system indicates there must be planets present.
  D) Data from ALMA does not support nebular theory, instead it is causing scientists to revise the theory.

Question 3

The composition of a planet's atmosphere be measured during a transit by analyzing
 
  A) the excess absorption of starlight at specific wavelengths.
  B) the excess emission of starlight at specific wavelengths.
  C) the length and depth of the dip in light during the transit.
  D) the amplitude and period of the star's motion.
  E) the wobble in a star's position on the sky.
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zika123zika123
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6 years ago
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Eric8925 Author
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6 years ago
Helps a lot <3 Now I'm ready for my quiz
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