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

Author Question: Collisions between galaxies: A) are much rarer than collisions between stars. B) can turn ... (Read 106 times)

Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
on: Jul 27, 2018
Collisions between galaxies:
 
  A) are much rarer than collisions between stars.
  B) can turn elliptical galaxies into spirals.
  C) cause large numbers of stars to collide and explode.
  D) cause the gas and dust clouds to collide, leading to rapid star formation.
  E) are the best explanation for gamma-ray burst events.

Question 2

Why are summers hotter than winters? Relate this to the Sun's position in the celestial sphere and the length of the days.
 
  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

ttt030911

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

The Sun is 47 degrees higher in the noon sky for northern hemisphere observers in June than in December, and also gives several extra hours of daylight as well.


Yi-Chen

  • Hero Member
  • *****
  • Posts: 550
Reply #2 on: Jul 27, 2018
TY


ttt030911

  • Sr. Member
  • ****
  • Posts: 315
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
The Spectra of Stars with Different Surface Temperatures. The Spectra of Stars with Different Surface Temperatures.
Giant Elliptical Galaxies Giant Elliptical Galaxies
Gravitational Lensing of Extremely Distant Galaxies Gravitational Lensing of Extremely Distant Galaxies
Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu
Turn baby over, placing him or her sideways across your legs if on floor or across pillow. Turn baby over, placing him or her sideways across your legs if on floor or across pillow.
Video: Virtual Tour of the Eye Animation

For a complete list of videos, visit our video library