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 13 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
:D TYSM

nathang24

  • Member
  • Posts: 314
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

TrUe....FaLsE TrUe....FaLsE
building blocks building blocks
Building competency Building competency
Building a Client Base Cont. Building a Client Base Cont.
Types of Policies Important for a Massage Therapy Practice Types of Policies Important for a Massage Therapy Practice
Red, fleshy fruits of hawthorn plants (Crataegus) are an important food for cedar waxwings (Bombycil Red, fleshy fruits of hawthorn plants (Crataegus) are an important food for cedar waxwings (Bombycil
Video: Introduction to Insulin

For a complete list of videos, visit our video library