Sign In
Ask Question
Jan Wiley
Physics
22 November, 07:17
A blue shift in light from a star indicates what?
+4
Answers (
1
)
Bianca Perry
22 November, 07:39
0
We don't know. The only way we have to explain it is as the result of
a "Doppler effect", that is, by assuming that the star is approaching us.
But if the Doppler effect is really at work in the cosmos, then the vast
majority of galaxies, along with all of their stars, are receding from us ...
as if space itself and the entire universe were expanding!
That's the current assumption, because no other plausible cause
has been found for the shift of spectra from distant objects. But
nothing in science is ever settled, and the search goes on.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“A blue shift in light from a star indicates what? ...”
in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What is the magnitude of velocity?
Answers (1)
The force exerted by the wind on the sails of a sailboat is 360 N north. The water exerts a force of 170 N east. If the boat (including its crew) has a mass of 310 kg, what are the magnitude and direction of its acceleration?
Answers (2)
If the distance from earth to alpha centauri is 4.34 light-years, then a) alpha centauri is the closest star to earth. b) we see alpha centauri as it was four years ago. c) the distance is equal to 4.34 astronomical units.
Answers (2)
Determine which factors will increase the reaction rate and which factors will decrease to reaction rate Decrease concentration Increase Reaction Rate Decrease Reaction Rate Decrease suntace area
Answers (2)
As the electron moves, does the electric potential energy of the system increase, decrease, or stay the same?
Answers (1)
New Questions in Physics
0.005 kg of copper was heated from 20°C to 80°C. How much energy was used to eat Cu? (Specific heat capacity of Cu is 385 J/kg °C)
Answers (1)
Assuming that the bohr model is valid, what is the kinetic energy of a photoelectron liberated by a photon with a the given wavelength from a state with given z and n
Answers (1)
Compare the acceleration of a motorcycle that accelerates from 80 km/h to 90 km/h
Answers (1)
Do you think you would like to do arson or explosion investigation or evidence testing? Why or why not?
Answers (1)
What's the difference between solids and liquids?
Answers (2)
Home
»
Physics
» A blue shift in light from a star indicates what?
Sign In
Sign Up
Forgot Password?