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

Author Question: Galaxies in all directions are observed to be streaming away from us as if we were in the center of ... (Read 12 times)

mynx

  • Hero Member
  • *****
  • Posts: 555
on: Jul 27, 2018
Galaxies in all directions are observed to be streaming away from us as if we were in the center of the universe.
 
  Contrast this impression with the Cosmological Principle and explain why a simple-minded interpretation of the Hubble expansion is incorrect.

Question 2

Contrast a hypernova and a type II supernova.
 
  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

scrocafella

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Jul 27, 2018
Answer to Question 1

If we are at the center of the universe that contradicts the cosmological principle which says that no point is in any way different from any other point. It is not that everything is moving away from us per sec, it is that everything is moving away from everything else. No matter where we might be, we would observe that everything moved away from us.

Answer to Question 2

A more massive star collapses to a black hole in a hypernova, with bi-polar jets of gamma rays. In a less massive type II event, only a neutron star is left.


mynx

  • Member
  • Posts: 555
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

amandalm

  • Member
  • Posts: 306
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Mars sketched as observed by Lowell sometime before 1914. (South top) Mars sketched as observed by Lowell sometime before 1914. (South top)
Spiral Galaxies Seen Nearly Edge On from the Milky Way Spiral Galaxies Seen Nearly Edge On from the Milky Way
The Rotation Curves of Four Spiral Galaxies The Rotation Curves of Four Spiral Galaxies
Five Galaxies and Their Spectra Five Galaxies and Their Spectra
The receptive fields of an on-center cell and an off-center cell. The receptive fields of an on-center cell and an off-center cell.
Apply petrissage to center of abdomen. Place hands palm over palm in center of the abdomen. Create ... Apply petrissage to center of abdomen. Place hands palm over palm in center of the abdomen. Create ...
Video: Normal and abnormal blood pH

For a complete list of videos, visit our video library