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

Author Question: Astronomers know the universe is expanding because: A) everything is moving away from us. B) all ... (Read 64 times)

rmenurse

  • Hero Member
  • *****
  • Posts: 513
on: Jul 27, 2018
Astronomers know the universe is expanding because:
 
  A) everything is moving away from us.
  B) all stars are moving away from us.
  C) most galaxies are moving away from us.
  D) galaxies farther away are moving away from us faster.
  E) there is a cosmic microwave background.

Question 2

What makes the Crab Nebula supernova remnant unusual as a supernova remnant?
 
  A) It is the biggest supernova remnant visible.
  B) It is the remnant of a supernova that was observed in the 20th century.
  C) It is the nearest supernova remnant.
  D) It is the oldest supernova remnant known.
  E) It is the remnant of a supernova observed by humans.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mmj22343

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

E


rmenurse

  • Member
  • Posts: 513
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

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
Gradient Flow:Upper air moving from areas of higher pressure to areas of lower pressure undergo ... Gradient Flow:Upper air moving from areas of higher pressure to areas of lower pressure undergo ...
Apply deep circular friction with the fingertips to the erector muscles on the right side, moving ... Apply deep circular friction with the fingertips to the erector muscles on the right side, moving ...
Direct thumb pressure along the tibialis anterior. Start at proximal end, moving about 1 inch at a ... Direct thumb pressure along the tibialis anterior. Start at proximal end, moving about 1 inch at a ...
Apply light circular friction over the wrist using your thumbs. Observe the skin moving over the ... Apply light circular friction over the wrist using your thumbs. Observe the skin moving over the ...
Gently squeeze along the length of the arm with both hands, moving down the arm from shoulder to ... Gently squeeze along the length of the arm with both hands, moving down the arm from shoulder to ...
Video: Arthritis

For a complete list of videos, visit our video library