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

Author Question: All globular clusters in our Milky Way are about how old? A) less than a million years B) ... (Read 60 times)

magmichele12

  • Hero Member
  • *****
  • Posts: 559
on: Jul 27, 2018
All globular clusters in our Milky Way are about how old?
 
  A) less than a million years
  B) ten-fifty million years old
  C) one to three billion years old
  D) around ten billion years old
  E) a variety of ages, from newly born to twenty billions years old

Question 2

Explain why stars form only in molecular clouds, the coldest, densest parts of the interstellar medium.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

maya.nigrin17@yahoo.com

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

A cloud collapses and ultimately forms stars when gravity overcomes thermal pressure. The latter depends both on the density and temperature of the cloud. The high densities in molecular clouds means that the gravitational forces are relatively strong but the pressure is no higher than elsewhere because the temperatures are low.


magmichele12

  • Member
  • Posts: 559
Reply 2 on: Jul 27, 2018
:D TYSM

amandanbreshears

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

A laser-guided observation of the Milky Way Galaxy at the Paranal Observatory in Chile in 2010. A laser-guided observation of the Milky Way Galaxy at the Paranal Observatory in Chile in 2010.
Illustration of the Milky Way galaxy, showing the location of the Sun Illustration of the Milky Way galaxy, showing the location of the Sun
Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa
A pedigree for albinism collected in the early years of the twentieth century by Charles Davenport, A pedigree for albinism collected in the early years of the twentieth century by Charles Davenport,
Beak size in finches during dry years increases because of strong selection Beak size in finches during dry years increases because of strong selection
Heart drawing by 6 years old Heart drawing by 6 years old
Video: What is Reverse Osmosis?

For a complete list of videos, visit our video library