Cosmic Expansion Rate Rechner — Formel
## How the Cosmic Expansion Rate Works
Edwin Hubble discovered that galaxies recede from us at speeds proportional to their distance.
### Hubble-Lemaitre Law
**v = H0 * d**
- *H0* is the Hubble constant (around 70 km/s/Mpc)
- *d* is the co-moving distance in megaparsecs
This linear relation holds for nearby galaxies; at cosmological distances, corrections from the Friedmann equations are needed.
Edwin Hubble discovered that galaxies recede from us at speeds proportional to their distance.
### Hubble-Lemaitre Law
**v = H0 * d**
- *H0* is the Hubble constant (around 70 km/s/Mpc)
- *d* is the co-moving distance in megaparsecs
This linear relation holds for nearby galaxies; at cosmological distances, corrections from the Friedmann equations are needed.
Lösungsbeispiel
A galaxy sits 100 Mpc away with H0 = 70 km/s/Mpc.
- v = H0 * d
- v = 70 * 100
- v = 7 000 km/s