The balloon will float until the density of its gas equals the density of the surrounding air. The density of the air decreases as altitude increases; because of gravity; gas molecules are more sparse at higher elevations. The air is thinner at high altitudes.
The latest big moment came when he landed the part of Meryl Streepâs bandmate and lover in director Jonathan Demmeâs new film, Ricki and the Flash, which opens Friday (Aug. 7). Meryl Streep Covers Gaga, Springsteen, Petty for New Film, 'Ricki and the Flash'. And it almost didnât happen.
Justin Roiland (co-creator of the show and the voice of Rick and Morty) said in an interview that Chris Parnell, who plays Jerry Smith, nails his lines on his first takes. However, because of normal voice recording precautions of animation, Parnell has to record at least thirty more takes.