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 95 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?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

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

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Range of Motion of the Hip Joint, Internal and External Rotation Range of Motion of the Hip Joint, Internal and External Rotation
Many thought ideological politics was over in the United States, but 2012 showed strong ideological Many thought ideological politics was over in the United States, but 2012 showed strong ideological
Camshaft rotation during advance and retard. Camshaft rotation during advance and retard.
A) Butterfly-shaped lupus rash. Lupus is the Latin word for wolf; the face rash was thought to look ... A) Butterfly-shaped lupus rash. Lupus is the Latin word for wolf; the face rash was thought to look ...
Lymphatic Drainage on Dorsum with Ankle Rotation. With the fingers of both hands, gently stretch the ... Lymphatic Drainage on Dorsum with Ankle Rotation. With the fingers of both hands, gently stretch the ...
Effect of the direction of flagellar rotation Effect of the direction of flagellar rotation
Video: Mendel's Principles of Inheritance (Father of Genetics)

For a complete list of videos, visit our video library