In 1957, he made the first nonstop supersonic flight across the United States, flying from Los Angeles to New York in three hours and 23 minutes. Glenn was preceded in space by two Americans, Alan B. Shepard Jr. and Virgil I. âGusâ Grissom, and two Soviets, Yuri A. Gagarin and Gherman S. Titov. In April 1961, Gagarin was the first man in space, and his spacecraft Vostok 1 made a full orbit before returning to Earth. Less than one month later, Shepard was launched into space aboard Freedom 7 on a suborbital flight. In July, Grissom made another brief suborbital flight aboard Liberty Bell 7.
Most customers will spend between $700 and $2,800 for a mid-quality heat pump, not including labor costs. Depending on the brand, model and installation factors like drilling or excavation, this can take the cost up to $9,000.
Upfront Costs. Though they are less expensive to operate, electric heat pump pool heaters cost more upfront than both gas and electric resistance heaters. Heat pumps can cost up to $5,000, while the majority of gas and electric resistance heaters are available for around $1,000 and $2,000 respectively.The cost for installing heat pumps and gas heaters averages about $300 to $500, including labor and materials.eat pumps can cost up to $5,000, while the majority of gas and electric resistance heaters are available for around $1,000 and $2,000 respectively. The cost for installing heat pumps and gas heaters averages about $300 to $500, including labor and materials.