This topic contains a solution. Click here to go to the answer

Author Question: Of what is the galactic halo composed? What will be an ideal ... (Read 65 times)

mydiamond

  • Hero Member
  • *****
  • Posts: 804
Of what is the galactic halo composed?
 
  What will be an ideal response?

Question 2

The density of interstellar dust is very low, yet it still blocks starlight because
 
  A) there is 100 times more opaque gas than dust present in the interstellar medium.
  B) it is so cold it absorbs higher energy photons.
  C) the dust particles are about the same size as the light waves they absorb.
  D) the dust particles are irregular in shape.
  E) ice particles reflect all light back toward their stars, not toward us.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nital

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

The globular clusters are most obvious component, but the halo also has many loose stars of Population II, escaped from their clusters, and a great deal of dark matter, whose true nature is still uncertain.

Answer to Question 2

C




mydiamond

  • Member
  • Posts: 804
Reply 2 on: Jul 27, 2018
:D TYSM


bigcheese9

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

For a complete list of videos, visit our video library