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

Author Question: Hot, low-density gas can be detected in galactic clusters through X-ray emission. The gas is ... (Read 45 times)

karateprodigy

  • Hero Member
  • *****
  • Posts: 550
Hot, low-density gas can be detected in galactic clusters through X-ray emission. The gas is important in understanding dark matter because ____.
 
  a. dark matter is responsible for heating the gas
 b. dark matter must make the cluster massive enough to hold on to the hot gas
 c. the gas may be the source of dark matter
 d. the gas is clumped in empty places between galaxies where there is more dark matter
  e. the gas is produced by dark matter

Question 2

Why aren't optical or radio telescopes used in particle astronomy, which studies cosmic waves and gravity waves?
 
  a. Cosmic and gravity waves are too dangerous to detect.
 b. Particle astronomy can only be studied in deep space.
 c. Cosmic and gravity waves are too large of particles for ground-based telescopes.
 d. Optical and radio telescopes can only detect electromagnetic radiation.
 e. Optical and radio telescopes are not technologically advanced enough to capture these particles.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

djpooyouma

  • Sr. Member
  • ****
  • Posts: 325
Answer to Question 1

b

Answer to Question 2

d




karateprodigy

  • Member
  • Posts: 550
Reply 2 on: Jul 27, 2018
Gracias!


miss_1456@hotmail.com

  • Member
  • Posts: 289
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

For a complete list of videos, visit our video library