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

Author Question: What evidence do we have that the halo population of stars are older than other stars in the galaxy? ... (Read 90 times)

james

  • Hero Member
  • *****
  • Posts: 573
on: Jul 27, 2018
What evidence do we have that the halo population of stars are older than other stars in the galaxy?
 
  A) They are farther away.
  B) They have higher masses than other stars in the galaxy.
  C) They have fewer planets.
  D) They have a smaller proportion of heavy elements.
  E) They move slower than other stars in the galaxy.

Question 2

What is the ultimate fate of an open universe?
 
  A) the Big Crunch
  B) Stars will expand away from each other and galaxies effectively evaporate.
  C) All matter decays to a low-density sea of photons and subatomic particles.
  D) All matter eventually ends up in massive black holes.
  E) Individual stars die but their gas is recycled through the interstellar medium and new stars form in a never-ending process.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akemokai

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

C


james

  • Hero Member
  • *****
  • Posts: 573
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


akemokai

  • Sr. Member
  • ****
  • Posts: 347
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun
Common skin signs are often evidence of an illness or disorder. A crust is a dry, serous or ... Common skin signs are often evidence of an illness or disorder. A crust is a dry, serous or ...
Evidence for the covalent intermediate in the mechanism of lysozyme Evidence for the covalent intermediate in the mechanism of lysozyme
Population distribution (dispersion) Population distribution (dispersion)
The evidence of metabolites from gut microbiota. The evidence of metabolites from gut microbiota.
Distribution Patterns and Population Size Estimates (Bio 30) Distribution Patterns and Population Size Estimates (Bio 30)
Video: Definitions of stroke volume, preload definition & Factors influencing stroke volume

For a complete list of videos, visit our video library