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

Author Question: The corona can only be glimpsed from Earth during a(n) ________. Fill in the blank(s) with ... (Read 37 times)

audragclark

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
The corona can only be glimpsed from Earth during a(n) ________.
 
  Fill in the blank(s) with correct word

Question 2

Which of the following models best explains why our galaxy has spiral arms?
 
  A) No model can explain the existence of the arms, which rotate with the galaxy like the fins of a giant pinwheel toy.
  B) The spiral arms were imprinted on the galaxy at its birth. Ever since, like a coiling rope, the spiral arms have been wound tighter with each galactic rotation.
  C) The spiral arms are composed of groups of stars that are bound together by gravity and therefore always stay together as the galaxy rotates.
  D) The spiral arms are a wave of star formation caused by wave of density propagating outward through the disk of the galaxy.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

debra928

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 27, 2018
Answer to Question 1

total solar eclipse

Answer to Question 2

D


audragclark

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
Excellent

steff9894

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

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
False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth. False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth.
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
Solar EM Radiation Penetration into Earth's Atmosphere Solar EM Radiation Penetration into Earth's Atmosphere
Stronger threads are created by cold rolling a heat-treated bolt blank instead of cutting the ... Stronger threads are created by cold rolling a heat-treated bolt blank instead of cutting the ...
Precession of Earth Precession of Earth
Video: Summary of glucose catabolism

For a complete list of videos, visit our video library