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

Author Question: Explain why it is so difficult to see planets around other stars. What will be an ideal ... (Read 15 times)

jho37

  • Hero Member
  • *****
  • Posts: 531
on: Jul 27, 2018
Explain why it is so difficult to see planets around other stars.
 
  What will be an ideal response?

Question 2

From where did the molecular oxygen in Earth's atmosphere originate?
 
  A) photosynthesis from plant life
  B) photosynthesis from single-celled organisms
  C) outgassing from volcanoes
  D) atmospheric bombardment
  E) oxidation of surface rocks


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jjorrostieta

  • Sr. Member
  • ****
  • Posts: 298
Reply #1 on: Jul 27, 2018
Answer to Question 1

Planets are very faint compared to the stars they orbit. Moreover, they are very close to their parent star compared to the distance between stars. On the 1-to-10 billion scale, where the Sun is the size of a grapefruit and Earth is a pinhead about 15 meters way, the nearest star is several thousand kilometers away. Together, this makes it extremely difficult to distinguish the faint light of a planet from the star it orbits. (Nevertheless, massive Jupiter-like planets have been indirectly detected orbiting around nearby stars.)

Answer to Question 2

B


jho37

  • Hero Member
  • *****
  • Posts: 531
Reply #2 on: Jul 27, 2018
Thank you!


jjorrostieta

  • Sr. Member
  • ****
  • Posts: 298
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

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?

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.

The Pleiades, an open cluster of stars in the constellation of Taurus. The Pleiades, an open cluster of stars in the constellation of Taurus.
The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Classifying the Spectra of Stars Classifying the Spectra of Stars
Planets Planets
Please fully explain the answer with steps Please fully explain the answer with steps
Video: Structures that affect circulation - heart and systolic/diastolic BP

For a complete list of videos, visit our video library