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

Author Question: What observational properties of pulsars allowed astronomers to discover them as a new type of ... (Read 39 times)

KWilfred

  • Hero Member
  • *****
  • Posts: 570
on: Jul 27, 2018
What observational properties of pulsars allowed astronomers to discover them as a new type of object?
 
  What will be an ideal response?

Question 2

What were the three discoveries Galileo made with his telescope observations and quickly published into Sidereus Nuncius?
 
  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

ally

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 27, 2018
Answer to Question 1

A pulsar emits a very regular pattern of radiation in the radio band. The pulsation period is extremely constant and has a period between a few tenths of a second and a few seconds. Such a regular pattern of radiation was unexpected in nature, and clearly represented a new phenomenon.

Answer to Question 2

First, the moon was not perfect. It had mountains and valleys on its surface, and Galileo even used some of the mountains' shadows to calculate their height.

Second, the Milky Way was made up of myriad stars too faint to see with the unaided eye.

Third, four new planets circling Jupiter, objects known today as the Galilean moons of Jupiter.


KWilfred

  • Member
  • Posts: 570
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

komodo7

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Przewalski's Horse, the only remaining type of "wild" horse that has never been domes Przewalski's Horse, the only remaining type of "wild" horse that has never been domes
Jaguar F-type front Jaguar F-type front
Jaguar F-type back Jaguar F-type back
One type of safety needle withdraws into a protective sheath when the injection is complete. One type of safety needle withdraws into a protective sheath when the injection is complete.
Nonmetal Hydrides and Their Properties Nonmetal Hydrides and Their Properties
A GWAS study for Type 2 diabetes revealed 386,371 genetic markers, clustered here by chromosome numb A GWAS study for Type 2 diabetes revealed 386,371 genetic markers, clustered here by chromosome numb
Video: What are Taste Receptors? How Does it Work? Animation

For a complete list of videos, visit our video library