This provides a basis for other distance measurements in astronomy, the cosmic distance ladder.

For some galaxies, it is possible to estimate distances via the cosmic distance ladder.

The distance estimate is important because astronomers use it as the first rung in the distance ladder they extend across the Universe.

Because the mass allows the luminosity to be directly determined, the star serves as an important calibrator for the cosmic distance ladder.

Zeta Geminorum is thus an important calibrator for establishing the cosmic distance ladder.

In particular the distance obtained for the Hyades has been an important step in the distance ladder.

Though valuable, such cases are quite rare, so they serve as important consistency checks on the distance ladder rather than workhorse steps by themselves.

This provides a basis for the cosmic distance ladder.

The distance to the Pleiades can be used as an important first step to calibrate the cosmic distance ladder.

The methods used to determine the distances to very distant cosmic objects are described in the "Cosmic distance ladder"