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

Author Question: What is the primary factor in determining the classification for an elliptical galaxy? a. size ... (Read 128 times)

theo

  • Hero Member
  • *****
  • Posts: 698
on: Jul 27, 2018
What is the primary factor in determining the classification for an elliptical galaxy?
 
  a. size
  b. shape
  c. mass
  d. color

Question 2

Why are distant stars redder than nearby stars of the same spectral type?
 
  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

todom5090

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

Interstellar reddening makes stars seen through a cloud of gas and dust look redder than they should because shorter wavelength light is more easily scattered.


theo

  • Hero Member
  • *****
  • Posts: 698
Reply #2 on: Jul 27, 2018
Thanks


todom5090

  • Sr. Member
  • ****
  • Posts: 328
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Ancient Warming Shrunk Horses to Housecat Size Ancient Warming Shrunk Horses to Housecat Size
Classification Classification
The motor homunculus: the somatotopic map of the human primary motor cortex. Stimulation of sites in ... The motor homunculus: the somatotopic map of the human primary motor cortex. Stimulation of sites in ...
Determining the extent of a burn: (A) rule of nines (adults); (B) Lund-Browder chart (children). Determining the extent of a burn: (A) rule of nines (adults); (B) Lund-Browder chart (children).
Banana Size vs. Calories Banana Size vs. Calories
Translation Elongation Factor Homologs Translation Elongation Factor Homologs
Video: Interpreting a cladogram Animation

For a complete list of videos, visit our video library