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Astronomy Picture Of the Day (APOD)
![Луны около Юпитера](https://images.astronet.ru/pubd/2019/05/24/0001471292/DSC_9154TurksoyMay21MJ1024.preview.jpg)
23.05.2019
On May 20, a nearly Full Moon and Jupiter shared this telephoto field of view. Captured when a passing cloud bank dimmed the moonlight, the single exposure reveals the familiar face of our fair planet's own large natural satellite, along with bright Jupiter (lower right) and some of its Galilean moons.
![Древняя контактная двойная система 2014 MU69](https://images.astronet.ru/pubd/2019/05/22/0001470880/ca06_color_UlThNH.preview.jpg)
22.05.2019
Primordial contact binary 2014 MU69, also known as Ultima Thule, really is very red. In fact, it's the reddest outer solar system object ever visited by a spacecraft from Earth. Its reddish hue is believed to be due to organic materials on its surface.
![Глубокое поле: туманности в Стрельце](https://images.astronet.ru/pubd/2019/05/21/0001470744/M8M20_Padilla_960.preview.jpg)
21.05.2019
These three bright nebulae are often featured on telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way. In fact, 18th century cosmic tourist Charles Messier cataloged two of them; M8, the large nebula just left of center, and colorful M20 on the top left.
![Планеты Солнечной системы: наклоны и вращение](https://images.astronet.ru/pubd/2019/05/20/0001470599/planets.preview.png)
20.05.2019
How does your favorite planet spin? Does it spin rapidly around a nearly vertical axis, or horizontally, or backwards? The featured video animates NASA images of all eight planets in our Solar System to show them spinning side-by-side for an easy comparison.
![Окологоризонтальная дуга над Огайо](https://images.astronet.ru/pubd/2019/05/19/0001470536/circumhorizontalarc_sladoje_960.preview.jpg)
19.05.2019
Why would clouds appear to be different colors? The reason here is that ice crystals in distant cirrus clouds are acting like little floating prisms. Sometimes known as a fire rainbow for its flame-like appearance, a circumhorizon arc lies parallel to the horizon.
![Атлас, Дафнис и Пан](https://images.astronet.ru/pubd/2019/05/19/0001470534/PIA21449AtlasDaphnisPan_fig1.preview.jpg)
18.05.2019
Atlas, Daphnis, and Pan are small, inner, ring moons of Saturn. They are shown at the same scale in this montage of images by the Cassini spacecraft that made its grand final orbit of the ringed planet in September 2017. In fact, Daphnis was discovered in Cassini images from 2005.
![RS Кормы](https://images.astronet.ru/pubd/2019/05/17/0001470127/RSPuppis_Hubble_rba1024.preview.jpg)
17.05.2019
Pulsating RS Puppis, the brightest star in the image center, is some ten times more massive than our Sun and on average 15,000 times more luminous. In fact, RS Pup is a Cepheid...
![Темное небо: включите ночь](https://images.astronet.ru/pubd/2019/05/16/0001469966/TotnBefore_Dai_1080.preview.jpg)
16.05.2019
Have you ever experienced a really dark night sky? One common and amazing feature is the glowing band of our Milky Way galaxy stretching from horizon to horizon. If you live in or near...
![Анемичная спиральная галактика NGC 4921](https://images.astronet.ru/pubd/2019/05/15/0001469822/NGC4921_HubbleShatz_960.preview.jpg)
15.05.2019
How far away is spiral galaxy NGC 4921? It's surpringly important to know. Although presently estimated to be about 300 million light years distant, a more precise determination could be coupled with its known recession speed to help humanity better calibrate the expansion rate of the entire visible universe.
![Молодое звездное скопление Трюмплер 14](https://images.astronet.ru/pubd/2019/05/14/0001469675/Trumpler14_Hubble_960.preview.jpg)
14.05.2019
Why does star cluster Trumpler 14 have so many bright stars? Because it is so young. Many cluster stars have formed only in the past 5 million years and are so hot they emit detectable X-rays.
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