Videos Of astronauts

April 15, 2014
First 4k UHD video in space
Astronauts have played around with floating spheres of water and effervescent tablets on the ISS numerous times, but this video starring astronaut Scott Kelly and his ball of changing colors is exceptional. That's because it is one of the first space videos that NASA has shot in 4K ultra-high-definition (UHD).

And right now, NASA is testing and evaluating these cameras to learn how they can be used to improve scientific experiments and analysis in space. And it seems that astronaut Kelly โ€” who has 5 more months left in his one-year stay on the ISS โ€” doesn't mind giving a helping hand:

"The higher resolution images and higher frame rate videos can reveal more information when used on science investigations, giving researchers a valuable new tool aboard the space station, " NASA explained in a description of the video astronaut Scott Kelly recently took on board the ISS.

Astronaut Kelly's video isn't just beautiful, it highlights different colors, textures, and movements that demonstrates the high-resolution camera's awesome capabilities.

You can see individual pockets of water explode off the surface after the effervescent tablet has dissolved.

That's because as the tablet dissolves, it generates bubbles of carbon dioxide gas inside the water that would normally rise to the surface of a glass on Earth โ€” but in space they move to the outer edges of the sphere, expanding in size until the bubbles pop and fling bits of water everywhere.
Source: finance.yahoo.com
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