Astronomy Pictures

T-38C Passes in Front of the Sun at Supersonic Speed

NASA: Image of the Day -

An Air Force Test Pilot School T-38C passes in front of the sun at a supersonic speed, creating shockwaves that are caught photographically for research. NASA is using a modern version of schlieren imagery to visualize supersonic flow phenomena with full-scale aircraft in flight. The results will help engineers design a quiet supersonic transport.

The Great Divide

NASA: Image of the Day -

It's difficult to get a sense of scale when viewing Saturn's rings, but the Cassini Division (seen here between the bright B ring and dimmer A ring) is almost as wide as the planet Mercury.

Busy Traffic at the International Space Station

NASA: Image of the Day -

Expedition 47 Flight Engineer Tim Peake of ESA took this photograph on April 6, 2016, as the International Space Station flew over Madagascar, showing three of the five spacecraft docked to the station. The station crew awaits the scheduled launch today, April 8, of the third resupply vehicle in three weeks: a SpaceX Dragon cargo spacecraft.

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