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Keywords: clouds, weather
![Облака, птицы, Луна и Венера](https://images.astronet.ru/pubd/2018/03/04/0001399924/venusmoon_pascual_960.preview.jpg)
4.03.2018
Sometimes the sky above can become quite a show. In early September of 2010, for example, the Moon and Venus converged, creating quite a sight by itself for sky enthusiasts around the globe. From some locations, though, the sky was even more picturesque.
![Трубчатые облака над Небраской](https://images.astronet.ru/pubd/2019/12/15/0001575841/mammatus_olson_960.preview.jpg)
15.12.2019
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.
![Радужные облака над Швецией](https://images.astronet.ru/pubd/2024/07/08/0001932842/IridescentClouds_Strand_960.preview.jpg)
7.07.2024
Why are these clouds multi-colored? A relatively rare phenomenon in clouds known as iridescence can bring up unusual colors vividly -- or even a whole spectrum of colors simultaneously. These polar stratospheric clouds also, known as nacreous and mother-of-pearl clouds, are formed of small water droplets of nearly uniform size.
![Трубчатые облака над Небраской](https://images.astronet.ru/pubd/2014/04/15/0001308114/mammatus_olsen_960.preview.jpg)
15.04.2014
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.
![Грозовой воротник над Висконсином](https://images.astronet.ru/pubd/2023/08/20/0001906781/rollcloud_hanrahan_960.preview.jpg)
20.08.2023
What kind of cloud is this? A type of arcus cloud called a roll cloud. These rare long clouds may form near advancing cold fronts. In particular, a downdraft from an advancing storm front can cause moist warm air to rise, cool below its dew point, and so form a cloud.
![Трубчатые облака над Саскачеваном](https://images.astronet.ru/pubd/2021/08/16/0001754676/Mammatus_Johnston_960.preview.jpg)
11.08.2021
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.
![Волнисто-бугристые облака над Новой Зеландией](https://images.astronet.ru/pubd/2016/04/17/0001360771/asperatus_priester_1024.preview.jpg)
17.04.2016
What kind of clouds are these? Although their cause is presently unknown, such unusual atmospheric structures, as menacing as they might seem, do not appear to be harbingers of meteorological doom. Known informally...
![Холодная погода в Северной Америке откладывается](https://images.astronet.ru/pubd/2016/11/15/0001371723/WarmTempsNA2_CCI_960.preview.jpg)
15.11.2016
Why is it so warm in northern North America? Usually during this time of year -- mid-November -- temperatures average as much as 30 degrees colder. Europe is not seeing a similar warming. One factor appears to be an unusually large and stable high pressure region that has formed over Canada, keeping normally colder arctic air away.
![Трубчатые облака над Саскачеваном](https://images.astronet.ru/pubd/2012/10/24/0001271489/mammatus_lindsay_960.preview.jpg)
23.10.2012
Normal 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.
![Северное сияние и необычные облака над Исландией](https://images.astronet.ru/pubd/2013/11/19/0001295985/auroraiceland_vetter_960.preview.jpg)
18.11.2013
What's happening in the sky? On this cold winter night in Iceland, quite a lot. First, in the foreground, lies the largest glacier in Iceland: Vatnajokull. On the far left, bright green auroras appear to emanate from the glacier as if it was a volcano. Aurora light is reflected by the foreground lake JЖkulsАrlСn.
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