Astronomy news update from NASA : 
When do cloud bottoms appear like bubbles? Normally, cloud bottoms are flat. This is because moist warm air that rises and cools will condense into water droplets at a specific temperature, which usually corresponds to a very specific height. As water droplets grow, an opaque cloud forms. Under some conditions, however, cloud pockets can develop that contain large droplets of water or ice that fall into clear air as they evaporate. Such pockets may occur in turbulent air near a thunderstorm. Resulting mammatus clouds can appear especially dramatic if sunlit from the side. The mammatus clouds pictured here were photographed over Hastings, Nebraska during 2004 June.
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When do cloud bottoms appear like bubbles? Normally, cloud bottoms are flat. This is because moist warm air that rises and cools will condense into water droplets at a specific temperature, which usually corresponds to a very specific height. As water droplets grow, an opaque cloud forms. Under some conditions, however, cloud pockets can develop that contain large droplets of water or ice that fall into clear air as they evaporate. Such pockets may occur in turbulent air near a thunderstorm. Resulting mammatus clouds can appear especially dramatic if sunlit from the side. The mammatus clouds pictured here were photographed over Hastings, Nebraska during 2004 June.
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Our new 'Word Of The Day' article update : Groom of the Stool , proper n :
(Britain, monarchy, historical) Originally an official responsible for helping the English monarch use the toilet; later a senior official who was allowed access to the monarch's privy chamber and served as a personal secretary.
(Britain, monarchy, historical) Originally an official responsible for helping the English monarch use the toilet; later a senior official who was allowed access to the monarch's privy chamber and served as a personal secretary.
Our new 'Word Of The Day' article update : by virtue of , prep :
(idiomatic) (originally) by the authority or power of; (now) because of; on the grounds of; by reason of.
(idiomatic) (originally) by the authority or power of; (now) because of; on the grounds of; by reason of.
Hello, Information from NASA The launch of Boeing’s Orbital Flight Test (OFT) to the International Space Station, as part of NASA’s Commercial Crew Program, is targeted for 6:36 a.m. EST Friday, Dec. 20. The uncrewed flight test will be the Boeing CST-100 Starliner’s maiden mission to the space station.
December 13, 2019
from NASA https://ift.tt/2PGDegB
December 13, 2019
from NASA https://ift.tt/2PGDegB
Hello guys, We're here with some new information from NASA : 
NGC 3175 is located around 50 million light-years away in the constellation of Antlia (the Air Pump). The galaxy can be seen slicing across the frame in this Hubble image, with its mix of bright patches of glowing gas, dark lanes of dust, bright core, and whirling, pinwheeling arms coming together to paint a beautiful celestial scene.
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NGC 3175 is located around 50 million light-years away in the constellation of Antlia (the Air Pump). The galaxy can be seen slicing across the frame in this Hubble image, with its mix of bright patches of glowing gas, dark lanes of dust, bright core, and whirling, pinwheeling arms coming together to paint a beautiful celestial scene.
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