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.
Keira Knightley has taken on the challenge of learning to sing for her role in the new movie Begin Again and one can only hope the result of her efforts will reflect that of Natalie Portmanâs and Meryl Streepâs. Begin Again opens in theaters, nationwide, on July 2. By Cody Collier.