This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Of what is the galactic halo composed? What will be an ideal ... (Read 64 times)

mydiamond

  • Hero Member
  • *****
  • Posts: 804
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
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
Great answer, keep it coming :)

Alyson.hiatt@yahoo.com

  • Member
  • Posts: 354
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Blue light is scattered more than other wavelengths by the gases in the atmosphere, giving the Earth Blue light is scattered more than other wavelengths by the gases in the atmosphere, giving the Earth
Supermassive Black Holes as Engines for Galactic Activity Supermassive Black Holes as Engines for Galactic Activity
Table Salt Is Composed of Sodium and Chloride Table Salt Is Composed of Sodium and Chloride
Genes are composed of a sequence of nucleotides in a DNA molecule Genes are composed of a sequence of nucleotides in a DNA molecule
For the circuit in Figure 1, assume ideal diodes. The peak inverse voltage is approximately For the circuit in Figure 1, assume ideal diodes. The peak inverse voltage is approximately
Video: Brain Anatomy Animation (Part 2 of 2)

For a complete list of videos, visit our video library