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 13 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 :)

duy1981999

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

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?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Galaxies with Rings Galaxies with Rings
Creation of Spiral and Elliptical Galaxies Creation of Spiral and Elliptical Galaxies
For ice massage, ice is frozen in a cylindrical container or a paper cup (A). The top half of the cu For ice massage, ice is frozen in a cylindrical container or a paper cup (A). The top half of the cu
Directions: Fill in the correct number or word(s). Order: Lantus U-100 insulin 68 units subcut ... Directions: Fill in the correct number or word(s). Order: Lantus U-100 insulin 68 units subcut ...
A longitudinal cut through the center of a shoot top of Coleus, a eudicot A longitudinal cut through the center of a shoot top of Coleus, a eudicot
Exceptional progeny observed by Calvin Bridges Exceptional progeny observed by Calvin Bridges
Video: What are Strong & Weak Acids and How they're different?

For a complete list of videos, visit our video library