For a discussion of astronomical methods for determining cosmological distances, see the article Cosmic distance ladder.

Others concluded that GRBs occur in other galaxies at cosmological distances and are extremely energetic.

Supernovae are useful for cosmology because they are excellent standard candles across cosmological distances.

Type 1a supernovae are the best-known standard candles across cosmological distances because of their extreme and extremely consistent luminosity.

Far infrared observations including submillimeter astronomy have revealed a number of sources at cosmological distances.

Supernovae provide important information on cosmological distances.

Since the effect he predicted was too small to show up in any laboratory, he had to look for it at cosmological distances.

He was also an early proponent of the idea that gamma-ray bursts are at cosmological distances.

Note that, over cosmological distances in general.

When first observed in the early 1970s, superluminal motion was taken to be a piece of evidence against quasars having cosmological distances.