The animation explains the detection of water in the zone near the star PDS 70, where rocky planets usually form. First we see the starry sky and approach the position of PDS 70. Then the video shows two different observations of the planet-forming disk with the positions of the two gas giant planets. Finally, we see a section of the spectrum with the water signatures determined by the MIRI instrument on board the JWST.
More information in the press release “Water discovered in rocky planet-forming zone offers clues on habitability”.