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

Author Question: Explain why the principle of homogeneity is an important aspect of the cosmological principle. ... (Read 39 times)

vHAUNG6011

  • Hero Member
  • *****
  • Posts: 514
on: Jul 27, 2018
Explain why the principle of homogeneity is an important aspect of the cosmological principle.
 
  What will be an ideal response?

Question 2

Describe how we know that the expansion rate of the Universe is currently accelerating.
 
  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

sarajane1989

  • Sr. Member
  • ****
  • Posts: 296
Reply #1 on: Jul 27, 2018
Answer to Question 1

The fact that the Universe is both isotropic and homogeneous leads to the cosmological principle, which says that any observer in any galaxy sees the same general properties for the Universe. The cosmological principle implies there are no special places in the Universe. What you see from the Milky Way Galaxy is typical of what all intelligent creatures see from their respective home galaxies. Furthermore, the cosmological principle states, in a new form, the idea that the Universe can have no center or edge.

Answer to Question 2

A study of type Ia supernovae showed that they are about 25 percent fainter than expected. That must mean they are farther away than expected, given their redshifts. This is strong evidence that the expansion of the Universe is accelerating.


vHAUNG6011

  • Member
  • Posts: 514
Reply 2 on: Jul 27, 2018
Excellent

Jossy

  • Member
  • Posts: 336
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Two important changes occur in the upper airway in croup:The epiglottis swells, thereby occluding th Two important changes occur in the upper airway in croup:The epiglottis swells, thereby occluding th
Some biologically important hydrogen bonds Some biologically important hydrogen bonds
Principle of Recuperation Principle of Recuperation
Important Concepts in Clinical Massage Therapy Important Concepts in Clinical Massage Therapy
Explain the myogenic autoregulation of the glomerular filtration rate Explain the myogenic autoregulation of the glomerular filtration rate
Physics - Pressure, Density, Pascal's Principle Physics - Pressure, Density, Pascal's Principle
Video: Stages of Mitosis - Prophase, Prometaphase, Metaphase, Anaphase & Telophase

For a complete list of videos, visit our video library