Credit: R. Williams (STScI) / the Hubble Deep Field Team / NASA / ESA "Hubble is the first to open our eyes to the full richness of the universe, especially through cosmic time," Wiseman ...

Credit: NASA, ESA, CSA, STScI "Space is big ... Cepheid variables are an important rung on the cosmic distance ladder, a system astronomers use that builds one observation on another to draw ...