« previous next »

Author Question: Regions of compression that move at their own speed in the disk and are outlined by the spiral arms ... (Read 28 times)

rmenurse

  • Hero Member
  • *****
  • Posts: 513
on: Jul 27, 2018
Regions of compression that move at their own speed in the disk and are outlined by the spiral arms are _____________.
 
  Fill in the blank(s) with correct word

Question 2

The youngest stars in the Orion Nebula and other star-forming regions also show
 
  a. circumstellar disks.
  b. jets.
  c. circumstellar disks and jets.


smrerig

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 27, 2018
Answer to Question 1

density waves

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Spiral Galaxies Seen Nearly Edge On from the Milky Way Spiral Galaxies Seen Nearly Edge On from the Milky Way
Electrical charge of the inner and outer regions of nerve cells Electrical charge of the inner and outer regions of nerve cells
Gentle foot compression to end a session. Gentle foot compression to end a session.
Brushing off to finish-front. Move to the front and place the person’s hands on his or her knees. ... Brushing off to finish-front. Move to the front and place the person’s hands on his or her knees. ...
Many U.S. regions under threat due to changes in sea level Many U.S. regions under threat due to changes in sea level
Body Regions in the Somatosensory Cortex Body Regions in the Somatosensory Cortex
Video: Erythropoietin (EPO)

For a complete list of videos, visit our video library