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

Author Question: Why are Earths and super-Earths in the habitable zones of their stars of special interest? What ... (Read 58 times)

kaid0807

  • Hero Member
  • *****
  • Posts: 515
on: Jul 27, 2018
Why are Earths and super-Earths in the habitable zones of their stars of special interest?
 
  What will be an ideal response?

Question 2

What is peculiar about Sirius based on historical records?
 
  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

lcapri7

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jul 27, 2018
Answer to Question 1

One of the major motivations for searching for exoplanets has been to find planets that harbor life. Life-as-we-know-it requires liquid water and planets in the habitable zones could have liquid water. Adding that to rocky or terrestrial planets, there is hope that life would have developed the same way on these planets.

Answer to Question 2

Records from 100 B.C. to 200 A.D. indicate that Sirius was red in color; records since that time indicate that Sirius is blue-white. Stellar evolution models do not predict that sort of color change.


kaid0807

  • Hero Member
  • *****
  • Posts: 515
Reply #2 on: Jul 27, 2018
TY


lcapri7

  • Sr. Member
  • ****
  • Posts: 350
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

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?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Stars and constellations Stars and constellations
Coding for Special Situations Cont Coding for Special Situations Cont
How to solve equations that contain cosine using special triangles (Part 2) How to solve equations that contain cosine using special triangles (Part 2)
How to calculate compound interest (Part 1) How to calculate compound interest (Part 1)
A non-interest-bearing five-year note for $54600.00 issued May 1, 2015, is discounted April 1, ... A non-interest-bearing five-year note for $54600.00 issued May 1, 2015, is discounted April 1, ...
Rita borrows $4,500 from the bank at 9 percent annually compounded interest to be repaid in ... Rita borrows $4,500 from the bank at 9 percent annually compounded interest to be repaid in ...
Video: Role of transport in a cell

For a complete list of videos, visit our video library