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 26 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?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

The elliptical galaxy Centaurus A at visible, far-infrared and x-ray wavelengths. The elliptical galaxy Centaurus A at visible, far-infrared and x-ray wavelengths.
Galaxy Galaxy
Synchronous Rotation of the Moon Synchronous Rotation of the Moon
Insulin rotation sites Insulin rotation sites
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 ...
Fornax Galaxy Cluster Fornax Galaxy Cluster
Video: The pH scale - Strong acids and Weak acids

For a complete list of videos, visit our video library