Author Question: A star (no matter what its mass) spends most of its life A) as a main-sequence star. B) as a ... (Read 130 times)

clippers!

  • Hero Member
  • *****
  • Posts: 828
A star (no matter what its mass) spends most of its life
 
  A) as a main-sequence star.
  B) as a T-Tauri variable star.
  C) as a planetary nebula.
  D) as a protostar.
  E) as a red giant or supergiant.

Question 2

When observing a quasar, we are probably looking at a stage of evolution in the very early universe.
 
  Indicate whether the statement is true or false



tsternbergh47

  • Sr. Member
  • ****
  • Posts: 311
Answer to Question 1

A

Answer to Question 2

TRUE



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

For a complete list of videos, visit our video library