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

Author Question: Why is the Hyades Cluster important for building up a catalog of the true luminosities of ... (Read 35 times)

yoooooman

  • Hero Member
  • *****
  • Posts: 557
on: Jul 27, 2018
Why is the Hyades Cluster important for building up a catalog of the true luminosities of main-sequence stars?
 
  A) It is close enough to us that the distance to its stars can be found by stellar parallax.
  B) It's a cluster that has been photographed over many decades, so we know how the stars vary in brightness.
  C) It contains many Cepheid variable stars that can be used to determine its distance.
  D) It is an extremely bright star cluster.
  E) It is an old globular cluster whose age we can determine very accurately by measuring its main-sequence turn-off point.

Question 2

Galileo is credited with designing the first reflector telescope.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

meganlapinski

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

A

Answer to Question 2

FALSE


yoooooman

  • Member
  • Posts: 557
Reply 2 on: Jul 27, 2018
Wow, this really help

gcook

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo The Pleiades, an open cluster of stars in the constellation of Taurus. These stars share a common mo
The continents were not always in their present positions. The position of the continents is importa The continents were not always in their present positions. The position of the continents is importa
Types of Policies Important for a Massage Therapy Practice Types of Policies Important for a Massage Therapy Practice
Climate change is an important vector for human diseases Climate change is an important vector for human diseases
Specific Nutrients and Behaviors Are Important during the First Trimester Specific Nutrients and Behaviors Are Important during the First Trimester
Anterosuperior view of true pelvis (blue) Anterosuperior view of true pelvis (blue)
Video: Acid-base imbalances - metabolic acidosis and alkalosis

For a complete list of videos, visit our video library