Looking back 30-plus years, who knew we would be looking up more? We are, thanks to the Hubble Space Telescope.

Scientists have struggled for many decades with a cosmological conundrum known as the Hubble tension—a persistent disagreement in how quickly the universe is expanding as inferred from observations ...

Hubble had been in space for less than two years when its Goddard High Resolution Spectrograph detected traces of boron in a not-too-distant star. At an estimated age of 14.5 billion years, the star ...