The legacy of Arecibo’s nearly 60 years of astronomy research is strong, even after its loss in a dramatic 2020 collapse.
Earth’s highest, coldest, rarest clouds are back. How to see the eerie ‘noctilucent clouds’ this summer.
Look North as the stars appear in June and July to have a chance of seeing rare noctilucent (or ‘night-shining’) clouds with the naked eye.