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 81 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?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater, Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater,
An aryballe vase or decanter made for carrying body oils clearly demonstrates that ancient Greeks we An aryballe vase or decanter made for carrying body oils clearly demonstrates that ancient Greeks we
The Krapina remains may provide evidence of cannibalism by some Neadertals. The Krapina remains may provide evidence of cannibalism by some Neadertals.
Living arrangements of older adults in the United States vary widely depending on gender and ... Living arrangements of older adults in the United States vary widely depending on gender and ...
Population Indicators Population Indicators
Evidence of early bipedalism Evidence of early bipedalism
Video: Origin of organelles Animation

For a complete list of videos, visit our video library