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.
Loading... Meryl Streep is an actress of theater, television, and film. Meryl Streep made her professional stage debut in The Playboy of Seville (1971), before her screen debut in the television movie The Deadliest Season (1977). In that same year, Streep made her film debut with Julia (1977).