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SNC/TAI’s “Freedom Trainer” appears to be the lightest successor being offered, powered by two business jet-class engines instead of the GE Aviation (Lockheed Martin, Northrop and Boeing) or Honeywell/ITEC turbofans (Raytheon).

Sierra Nevada's Dream Chaser Space Plane (Infographic)

See photos and images of Sierra Nevada Corp.'s new Dream Chaser space plane, a private winged spaceship. Dream Chaser is based on NASA technology and will continue the space shuttle's legacy of winged spaceflight.

Sierra Nevada Corporation’s Dream Chaser ETA (Engineering Test Article) spacecraft.

The Sierra Nevada Corporation (SNC) Dream Chaser flight vehicle was ground tested at NASA's Dryden Flight Research Center in preparation for flight test milestones with the agency's Commercial Crew Program.

Sierra Nevada's Dream Chaser prototype space plane

Dream Chaser prototype spaceship damaged after first free-flying test

NASA partner Sierra Nevada Corporation (SNC) of Louisville, Colo., performs a captive-carry test of the Dream Chaser spacecraft Thursday at NASA's Dryden Flight Research Center in Edwards, Calif.

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NASA Selects Six Companies to Develop Prototypes, Concepts for Deep Space Habitats- Concept image of Sierra Nevada Corporation's habitation prototype, based on its Dream Chaser cargo module.

SR-71 Blackbird my baby

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How the British Skylon Space Plane Works (Infographic) By Karl Tate, Infographics Artist - See more at: http://www.space.com/32112-how-skylon-space-plane-works-infographic.html#sthash.IrPq7F8R.dpuf

The British company Reaction Engines Ltd. hopes to manufacture Skylon, a runway-to-orbit space plane using hybrid air-breathing rocket engines.

Space Future: Dennis Tito Aims To Launch A 501-day Round Trip To Mars In 2018

Dennis Tito's 2018 Human Mars Flyby Mission Explained Space tourist Dennis Tito's daring proposal to send a man and a woman on a space flight around the planet Mars explained.

Looking to develop the first commercial spacecraft to bring US astronauts to the International Space Station, Sierra Nevada Corporation begins flight tests of its winged Dream Chaser.

Dream Chaser's first flight a success but with bumpy landing

The Dream Chaser space plane designed by Sierra Nevada Space Systems is one of several private space taxis NASA is considering to launch American astronauts on round trips to the International Space Station. A decision is expected in late August or early