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

Author Question: Astronomers have found the center of the Universe to be located in a. Earth b. the Sun c. ... (Read 32 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 27, 2018
Astronomers have found the center of the Universe to be located in
 
  a. Earth
  b. the Sun
  c. Sagittarius A
  d. the Virgo Cluster of galaxies
  e. no center is thought to exist.

Question 2

What do astronomers think is the eventual fate of a white dwarf?
 
  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

amandanbreshears

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

As it radiates energy into space, a white dwarf's temperature gradually falls, but it can't shrink any smaller because its degenerate electrons resist getting closer together. Degenerate matter is a very good thermal conductor, so as heat flows to the surface and escapes into space the white dwarf gets fainter and cooler, moving downward and to the right in the H-R diagram. Because a white dwarf contains a tremendous amount of heat, it needs billions of years to radiate that heat through its small surface area. Eventually, such objects may become cold and dark, so-called black dwarfs.


penguins

  • Hero Member
  • *****
  • Posts: 903
Reply #2 on: Jul 27, 2018
TY


amandanbreshears

  • Sr. Member
  • ****
  • Posts: 320
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

The Sun as it appears from the surface of the Earth at Sunset. The Sun as it appears from the surface of the Earth at Sunset.
Temperature Profile of Earth’s Atmosphere Temperature Profile of Earth’s Atmosphere
A normally worn spark plug that has a tapered platinum-tipped center electrode. A normally worn spark plug that has a tapered platinum-tipped center electrode.
Wavelengths that penetrate the earth's atmosphere Wavelengths that penetrate the earth's atmosphere
Earth’s Spheres Earth’s Spheres
Similar Rock Outcrops on Mars and Earth Similar Rock Outcrops on Mars and Earth
Video: The primary factors that affect circulation - MABP, CO and SVR

For a complete list of videos, visit our video library