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 30 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
:D TYSM

bdobbins

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Light Palpation of Abdomen Light Palpation of Abdomen
The Light Curve of a Nova The Light Curve of a Nova
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it. In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30 relative ... A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30 relative ...
A monochromatic beam of light of wavelength 600 nm is incident normally on a diffraction ... A monochromatic beam of light of wavelength 600 nm is incident normally on a diffraction ...
Cyanobacteria from 850 million years ago (Photo 2) Cyanobacteria from 850 million years ago (Photo 2)
Video: Angiotensin II - kidneys, adrenal glands and dehydration

For a complete list of videos, visit our video library