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 96 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?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Three Mechanisms of Gene Transfer Found in Bacteria Three Mechanisms of Gene Transfer Found in Bacteria
The span of Homo sapiens sapiens’ time on earth The span of Homo sapiens sapiens’ time on earth
Solar EM Radiation Penetration into Earth's Atmosphere Solar EM Radiation Penetration into Earth's Atmosphere
Model of a purple bacterial reaction center complex Model of a purple bacterial reaction center complex
The hemes found in cytochromes The hemes found in cytochromes
Earth’s Layered Structure Earth’s Layered Structure
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library