#OTD in 1990, the Hubble Space Telescope launched, later becoming one of the most productive telescopes in history with more than 1.5 million observations and nearly 20,000 scientific publications based on its data.
✅ Source : Click here
━━━━━━━━━━━
☢ @Physics ⚡
✅ Source : Click here
━━━━━━━━━━━
☢ @Physics ⚡
👍9❤6🔥3