This simulation showcases the dynamic universe as NASA’s Nancy Grace Roman Space Telescope could see it over the course of its five-year primary mission. The gif sparkles with synthetic supernovae ...

Noctilucent clouds or night clouds over St Mary's Lighthouse in Whitley Bay, North Tyneside, taken at 01.45 am on Friday July 5, 2024. (Photo by Owen Humphreys/PA Images via Getty Images) Summer ...