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Home Q & A Board Science-Related Homework Help Physics Astronomy
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Atir Atir
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6 years ago
Current techniques can measure stellar motion to less than
 
  A) walking speed.
  B) running speed.
  C) freeway speed.
  D) cruising speed of an airplane.
  E) orbital speed of Jupiter.

Question 2

Roughly how many stars are within 4 parsecs of the solar system?
 
  A) 3
  B) 30
  C) 3000
  D) 300,000
  E) 200 billion

Question 3

A solar mass star will evolve off the main sequence when:
 
  A) it completely runs out of hydrogen.
  B) it expels a planetary nebula to cool off and release radiation.
  C) it explodes as a violent nova.
  D) it builds up a core of inert helium.
  E) it loses all its neutrinos, so fusion must cease.

Question 4

If we are directly in the line of a jet coming out of the lobe galaxy's core, we see a:
 
  A) hypernovae.
  B) pulsar.
  C) quasar.
  D) blazar.
  E) magnetar.
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berrytartsberrytarts
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6 years ago
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Atir Author
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#2
6 years ago
Thank you for being such a great website leader! All of your answers were right.
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