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

Author Question: How did Tycho's detailed observations of Mars' brightness help show that its orbit could not be ... (Read 55 times)

Medesa

  • Hero Member
  • *****
  • Posts: 507
on: Jul 27, 2018
How did Tycho's detailed observations of Mars' brightness help show that its orbit could not be circular?
 
  What will be an ideal response?

Question 2

What is the approximate luminosity of a main-sequence M star?
 
  A) 106 solar B) 1 solar C) 10 solar D) 0.01 solar


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

CourtneyCNorton

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 27, 2018
Answer to Question 1

Tycho noted that at some oppositions, Mars was much brighter than at others, suggesting that Mars must be closer to us when it was brighter.

Answer to Question 2

D


Medesa

  • Member
  • Posts: 507
Reply 2 on: Jul 27, 2018
Excellent

duy1981999

  • Member
  • Posts: 341
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

These bumper stickers show an allegiance to New Age religions These bumper stickers show an allegiance to New Age religions
Phobos in color by Mars Reconnaissance Orbiter - HiRISE Phobos in color by Mars Reconnaissance Orbiter - HiRISE
Mars sketched as observed by Lowell sometime before 1914. (South top) Mars sketched as observed by Lowell sometime before 1914. (South top)
An Active Avalanche on Mars An Active Avalanche on Mars
Food webs show feeding relationships and energy flow Food webs show feeding relationships and energy flow
The results of a cytogenetic survey of over 4,000 miscarriages show a wide variation in how often sp The results of a cytogenetic survey of over 4,000 miscarriages show a wide variation in how often sp
Video: Haustral churning, Gastrocolic reflex and mass peristalsis & Defecation

For a complete list of videos, visit our video library