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Home Q & A Board Science-Related Homework Help Physics Astronomy
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malaka33 malaka33
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6 years ago
When do comets generally begin to form a tail?
 
  A) inside Mercury's orbit
  B) between Mercury and Earth's orbit
  C) beyond Jupiter's orbit
  D) inside of Jupiter's orbit
  E) They always have a tail (until they run out of material).

Question 2

The most prominent feature of Mars observable from Earth is:
 
  A) its thick atmosphere.
  B) its two prominent moons.
  C) its bright polar caps.
  D) the large volcano Olympus Mons.
  E) the prominent feature, Valles Marineris.

Question 3

The radio source ________ is located in a place consistent with the center of our Galaxy.
 
  A) Cygnus X-1
  B) 3C 273
  C) 47 Tucanae
  D) M-8, the Lagoon Nebula
  E) Sgr A

Question 4

A cloud fragment too small to collapse into a main sequence star becomes a:
 
  A) white dwarf.
  B) pulsar.
  C) T Tauri object.
  D) brown dwarf.
  E) planet of another star.
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slpconnerslpconner
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6 years ago
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malaka33 Author
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6 years ago
Helped a lot
oscar520000
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Yesterday
Good timing, thanks!
emilyas19
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2 hours ago
Thanks
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