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 83 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?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Three ways that factors affect mortality in response to changes in population density. Three ways that factors affect mortality in response to changes in population density.
Trap set to monitor the wild population in the Dryandra Woodland Trap set to monitor the wild population in the Dryandra Woodland
The Types of Stars and Their Sizes The Types of Stars and Their Sizes
All of the homes in this new neighborhood of Brentwood, California, are for sale, evidence of the co All of the homes in this new neighborhood of Brentwood, California, are for sale, evidence of the co
World Population Growth World Population Growth
Population distribution (dispersion) Population distribution (dispersion)
Video: Bulk flow - factors that influence bulk flow

For a complete list of videos, visit our video library