× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
2
g
1
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
Astronomy HW Astronomy HW
wrote...
3 years ago
Why are Cepheid variables important?
      
a. Cepheid variables are stars that vary in brightness extremely rapidly as they rotate on their axes.
      
b. Cepheids are a type of young galaxy that helps us understand how galaxies form.
      
c. Cepheids are supermassive stars that we observe because they will soon undergo supernovae.
      
d. Cepheid variables are stars that brighten and dim with a period that is directly related to the star's luminosity.
Read 238 times
1 Reply

Related Topics

Replies
wrote...
#1
Educator
3 years ago
Quote from: Astronomy HW (3 years ago)
d. Cepheid variables are stars that brighten and dim with a period that is directly related to the star's luminosity.
New Topic      
Quick Reply
Bold
Italic
Underline
Strikethrough
Subscript
Superscript
Insert Math Equation
Font Name
Font Color
Align left
Center
Align right
Bullet list
Numbered list
Insert a horizontal rule
Insert a table
Insert a Quote
View source
Explore
Post your homework questions and get free online help from our incredible volunteers
  1026 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 375
  
 1324
  
 793
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 799
Previous poll results: What percentage of nature vs. nurture dictates human intelligence?