1. April 24, 1990: Hubble Space Telescope Launched into Orbit | Firstpost Rewind | N18G  YouTube
  2. The Day of the Trifid Nebula  NASA (.gov)
  3. Nebula sparkles in new Hubble snapshot photo of the day for April 23, 2026  Space
  4. NASA just dropped a stunning new Hubble image of a ‘Cosmic Sea Lemon’ 5,000 light-years away  Scientific American
  5. Hubble turns 36 with a dazzling Trifid Nebula portrait  European Space Agency