Source: ESA/Hubble and HubbleSite
Artist's impression of of exoplanet HAT-P-7b.
Image credits: NASA, ESA and G. Bacon (STScI).
The NASA/ESA Hubble Space Telescope has made its millionth observation since its launch 21 years ago. The telescope was used to search for the chemical signature of water in the atmosphere of planet HAT-P-7b, a gas giant larger than Jupiter which orbits the star HAT-P-7. (read more)