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17 May 2021 A timelapse image shows three suborbital rockets launching the Super Soaker mission. (Image credit: NASA s Wallops Flight Facility/Poker Flat Research Range/Zayn Roohi) A NASA-funded study is giving scientists insight into how night-shining clouds form in the upper atmosphere and the role that growing space traffic plays in the phenomenon. Scientists have known about these high-flying clouds since at least the late 1800s well before the space age that launched in 1957. Newer research, however, shows that these clouds tend to form in high-altitude areas with abundant water vapor, such as what is produced after modern-day rocket launches. The polar mesospheric clouds (PMCs), as the clouds are formally called, are collections of ice crystals usually found over the north or south poles during the late spring and summer. They re easiest to spot at ....
La NASA crea nubes artificiales como herramienta de estudio aporrea.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from aporrea.org Daily Mail and Mail on Sunday newspapers.
Rocket launches reveal water vapor effect in upper atmosphere eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.
27 FEBRUARY 2021 If you re in the right place at the right time, and you turn your eyes to the sky, you just might catch sight of something eerily beautiful: Wisps of cloud, high in the sky, glowing softly even though the Sun has already slipped below the horizon.
These are noctilucent, or night-shining, clouds, appearing at twilight primarily in the summer months, at high latitudes (but never observed from within the polar circle). They consist of collections of ice crystals high up in the atmosphere, at mesospheric altitudes between 76 and 85 kilometres (47 to 53 miles) above Earth s surface. These wisps are too faint to be seen during the day, but after the Sun has sunk below the horizon, its last rays reach high into the atmosphere, even though the star itself is no longer visible from the planet s surface. There, these rays light up the clouds, causing them to glow against the darkening sky. For this reason, these glowing clouds are also known as polar mes ....