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

Author Question: Astronomer's believe that a spiral galaxy may form: A) from a collision between a small and large ... (Read 87 times)

fasfsadfdsfa

  • Hero Member
  • *****
  • Posts: 554
on: Jul 27, 2018
Astronomer's believe that a spiral galaxy may form:
 
  A) from a collision between a small and large galaxy.
  B) due to a quasar shutting down.
  C) from the sudden contraction of an elliptical galaxy.
  D) from the collision of two giant elliptical galaxies.
  E) from the explosion of a dwarf irregular galaxy.

Question 2

Why can many more people witness a total lunar eclipse than a total solar eclipse?
 
  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

Bigfoot1984

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

For a total solar eclipse to be seen, the observer must be in the Moon's umbra, a shadow only about a hundred miles across, while everyone on the night side of the Earth can look up to witness the full moon moving though our shadow.


fasfsadfdsfa

  • Hero Member
  • *****
  • Posts: 554
Reply #2 on: Jul 27, 2018
Thank you!


Bigfoot1984

  • Sr. Member
  • ****
  • Posts: 321
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

The cotton-top tamarin (Saguinus oedipus), also known as the Pinche tamarin, is a small New W The cotton-top tamarin (Saguinus oedipus), also known as the Pinche tamarin, is a small New W
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Nutrients Are Absorbed through the Small Intestine Nutrients Are Absorbed through the Small Intestine
Downward Spiral of Poverty and Hunger Lack of food can lead to numerous other symptoms Downward Spiral of Poverty and Hunger Lack of food can lead to numerous other symptoms
The Small Intestine: A Huge Surface for Digestion & Absorption The Small Intestine: A Huge Surface for Digestion & Absorption
Video: Contraction cycle of a sarcomere

For a complete list of videos, visit our video library