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

Author Question: The dark halo is now believed to extend at least A) 100,000 light-years. B) 50 kpc. C) 8 kpc. ... (Read 28 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
on: Jul 27, 2018
The dark halo is now believed to extend at least
 
  A) 100,000 light-years.
  B) 50 kpc.
  C) 8 kpc.
  D) 15,000 light-years.
  E) 15 kpc.

Question 2

How can Betelgeuse be only half the Sun's surface temperature, yet about 10,000 times more luminous than the hotter Sun?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lolol

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

It may be cooler, but it is about 1,000 times the Sun's diameter, and has a surface area almost a million times greater than the Sun.


Hungry!

  • Member
  • Posts: 1,071
Reply 2 on: Jul 27, 2018
Wow, this really help

bdobbins

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Vertical structuring of the oceans is associated with substantial variation in light and temperature Vertical structuring of the oceans is associated with substantial variation in light and temperature
The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006. The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006.
Light palpation of abdomen Light palpation of abdomen
An example of light palpation of the abdomen. (B) the physician uses two hands for deep bimanual ... An example of light palpation of the abdomen. (B) the physician uses two hands for deep bimanual ...
Apply compression and light effleurage techniques to the foot and ankle to warm the area. Apply compression and light effleurage techniques to the foot and ankle to warm the area.
Video: Pressure volume relationships - Normal inspiration and expiration

For a complete list of videos, visit our video library