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

Author Question: It is possible that life exists on orphan planets, even though they do not orbit a star. Indicate ... (Read 56 times)

jerry coleman

  • Hero Member
  • *****
  • Posts: 570
on: Jul 27, 2018
It is possible that life exists on orphan planets, even though they do not orbit a star.
 
  Indicate whether the statement is true or false

Question 2

Briefly explain why we think white-dwarf supernovae are useful for measuring cosmic distances.
 
  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

durant1234

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 27, 2018
Answer to Question 1

TRUE

Answer to Question 2

They all come from explosions of white dwarfs that reach the white-dwarf limit, so we expect them all to have the same luminosity; observations of white-dwarf supernovae for which we can measure distance independently confirm that they all have the same luminosity. Since we can assume we know their luminosity, we can use their apparent brightnesses to determine distance from the luminosity-distance formula.


jerry coleman

  • Member
  • Posts: 570
Reply 2 on: Jul 27, 2018
Excellent

scottmt

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Gametic life cycle, as illustrated by diatoms Gametic life cycle, as illustrated by diatoms
Normal changes in the breast during a woman's life span Normal changes in the breast during a woman's life span
Is there anything in life that is permanent, or is the world constantly changing? Is there anything in life that is permanent, or is the world constantly changing?
Life Cycle Nutrition: Toddlers through the Later Years Life Cycle Nutrition: Toddlers through the Later Years
Life cycle of a club fungus having two mating strains of hyphae Life cycle of a club fungus having two mating strains of hyphae
Life cycle of a moss (Polytrichum) Life cycle of a moss (Polytrichum)
Video: Dorsal Recumbent Position

For a complete list of videos, visit our video library