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

Author Question: Why does the rotation of our galaxy suggest that it is more massive than previously thought? What ... (Read 17 times)

PhilipSeeMore

  • Hero Member
  • *****
  • Posts: 561
on: Jul 27, 2018
Why does the rotation of our galaxy suggest that it is more massive than previously thought?
 
  What will be an ideal response?

Question 2

A(n) ___________________ _ is a cool, dense cloud of dust and gas that is undergoing gravitational contraction.
 
  Fill in the blank(s) with correct word


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

diesoon

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 27, 2018
Answer to Question 1

The best observations of the rotation curve of the Milky Way show that orbital velocities in the outer disk are constant or even increasing with distance from the center of the galaxy. Those high orbital velocities indicate that the larger orbits enclose more mass and imply that our galaxy has much more mass than is contained within the radius of the Sun's orbit.

Answer to Question 2

protostar


PhilipSeeMore

  • Hero Member
  • *****
  • Posts: 561
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


diesoon

  • Sr. Member
  • ****
  • Posts: 353
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Range of Motion of the Hip Joint, Position of the Leg for Full External Rotation Range of Motion of the Hip Joint, Position of the Leg for Full External Rotation
Illustration of the Milky Way galaxy, showing the location of the Sun Illustration of the Milky Way galaxy, showing the location of the Sun
Giant Elliptical Galaxy M87 Giant Elliptical Galaxy M87
Rotation sites for administering insulin. Rotation sites for administering insulin.
Earth’s Revolution and Rotation: The Causes of Earth’s Seasons Earth’s Revolution and Rotation: The Causes of Earth’s Seasons
Effect of the direction of flagellar rotation Effect of the direction of flagellar rotation
Video: Oral Hygiene & Braces Animation

For a complete list of videos, visit our video library