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 33 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

lcapri7

  • Member
  • Posts: 350
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Ultraviolet mosaic of Mira's bow shock and tail obtained using NASA's Galaxy Evolution Exp Ultraviolet mosaic of Mira's bow shock and tail obtained using NASA's Galaxy Evolution Exp
A Dwarf Elliptical Galaxy A Dwarf Elliptical Galaxy
Seyfert Galaxy NGC 1566 Seyfert Galaxy NGC 1566
Sombrero Galaxy (M104) Sombrero Galaxy (M104)
The relationship of substrate con- version (as measured by optical density) to the amount of patient ... The relationship of substrate con- version (as measured by optical density) to the amount of patient ...
Spiral Galaxy Messier 83 Spiral Galaxy Messier 83
Video: Premenstrual Syndrome

For a complete list of videos, visit our video library