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

Author Question: Compare the way an optical and radio astronomer would map the Galaxy. What will be an ideal ... (Read 5 times)

ap345

  • Hero Member
  • *****
  • Posts: 537
on: Jul 27, 2018
Compare the way an optical and radio astronomer would map the Galaxy.
 
  What will be an ideal response?

Question 2

Which planet had the Great Dark Spot in 1989, but had lost it by 1995?
 
  A) Jupiter B) Saturn C) Mars D) Neptune E) Uranus


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kbennett34

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 27, 2018
Answer to Question 1

Optical astronomers try to map the distributions of visible associations of hot, young OB stars, emission nebulae, and open star clusters when visible in the disk. To get around the dust, radio observers use the 21-cm waves from neutral hydrogen, which can be observed and located all over the Galaxy.

Answer to Question 2

D


ap345

  • Member
  • Posts: 537
Reply 2 on: Jul 27, 2018
:D TYSM

LegendaryAnswers

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Cyanide works by making the human body unable to use oxygen.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Hugging Galaxy Hugging Galaxy
Dynamics of a Grand-Design Spiral Galaxy Dynamics of a Grand-Design Spiral Galaxy
A Starburst Galaxy A Starburst Galaxy
Optical microscopes are commonly configured for bright-field (transmitted), phas Optical microscopes are commonly configured for bright-field (transmitted), phas
Storage devices (A) External hard-disk drive (B) USB drive (C) Memory card (D) Optical disc (DVD) ... Storage devices (A) External hard-disk drive (B) USB drive (C) Memory card (D) Optical disc (DVD) ...
For the circuit in Figure 1, assume ideal diodes. The peak inverse voltage is approximately For the circuit in Figure 1, assume ideal diodes. The peak inverse voltage is approximately
Video: Antidiuretic hormone (vasoconstriction, water reabsorption & sweat inhibition)

For a complete list of videos, visit our video library