Descopera cosmosul! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Explicatie: (Edit) Pictured above is the first american astronaut to walk in space: Edward White. White is seen floating outside the Gemini 4 capsule in 1965. The term spacewalk is deceiving since astronauts do not actually walk - they float - usually without their feet touching anything solid. White was connected to the spaceship only by a thick tether. He carried a Hand-Held Self-Maneuvering Unit which expelled gas allowing him to move around. A maneuvering device is necessary in the free-fall of space since there is nothing (besides the spacecraft) to push off of to guide movements.
Autori & editori:
Robert Nemiroff
(MTU) &
Jerry Bonnell (USRA)
Reprezentanti tehnici NASA:
Jay Norris.
Specific rights apply.
Un serviciu al:
LHEA at
NASA/
GSFC
&
Michigan Tech. U.