- #1
WCOLtd
- 108
- 1
First question:
According to Hubble's Law, the redshift observed by distant galaxies are proportional to their distance.
This is what I already know: It says on wikipedia that Hubble observed cepheid variable stars in a spiral nebulae to calculate their distance, cepheid variable stars are cosmological candles, meaning they emit a consistent light signature.
Q: How did Hubble calculate distances using cephied stars in spiral nebulae?
According to Hubble's Law, the redshift observed by distant galaxies are proportional to their distance.
This is what I already know: It says on wikipedia that Hubble observed cepheid variable stars in a spiral nebulae to calculate their distance, cepheid variable stars are cosmological candles, meaning they emit a consistent light signature.
Q: How did Hubble calculate distances using cephied stars in spiral nebulae?
Last edited: