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Astronomy Picture Of the Day (APOD)
![Южное небо в H-alpha](https://images.astronet.ru/pubd/2002/01/29/0001174542/halpha_shassa.preview.jpg)
29.01.2002
A robotic telescope with red sunglasses in Chile has been photographing the entire southern sky for years. The result, shown above, is the most complete sky map of the most common visible light emitted from the most abundant element in our Galaxy: hydrogen. A very specific red color emitted by warm ionized hydrogen was observed.
![Панорама с Аполлона 17](https://images.astronet.ru/pubd/2002/02/04/0001174639/lunarpan_apollo17_small.jpg)
28.01.2002
What would it be like to stand on the surface of another world, to look all around you, and to try to figure out how this world got there? To get an idea, scroll right. In 1972 during the Apollo 17 mission, astronauts Harrison Schmitt and Eugene Cernan found out first hand.
![Восход Земли](https://images.astronet.ru/pubd/2003/05/29/0001190597/earthrise_apollo8.preview.jpg)
27.01.2002
During 1968, the Apollo 8 crew flew from the Earth to the Moon and back. The crew, consisting of Frank Borman, James Lovell, and Willian Anders, were launched atop a Saturn V rocket on December 21, circled the Moon ten times in their command module, and landed back on Earth on December 27.
![Двигатель шаттла в работе](https://images.astronet.ru/pubd/2002/01/26/0001174506/engine_sts51.preview.jpg)
26.01.2002
The Space Shuttle Discovery's orbital maneuvering system (OMS) engine firing produced this dramatic flare as it cruised "upside down" in low Earth orbit. Discovery was named for a ship commanded by Captain James Cook RN, the 18th Century English astronomer and navigator.
![Спиральные рукава NGC4622](https://images.astronet.ru/pubd/2002/01/25/0001174479/ngc4622_hst.preview.jpg)
25.01.2002
While stirring a morning cup of coffee and thinking cosmic thoughts many astronomers would glance at this Hubble Space Telescope image of spiral galaxy NGC 4622 and assume that the galaxy was rotating counterclockwise in the picture.
![Покатайтесь на лыжах на Энцеладе](https://images.astronet.ru/pubd/2002/01/24/0001174459/enceladus_voyager2.preview.jpg)
24.01.2002
A small inner moon of Saturn, Enceladus is only about 500 kilometers in diameter. But the cold, distant world does reflect over 90 percent of the sunlight it receives, giving its surface about the same reflectivity as new-fallen snow.
![Галактика Местной группы NGC 6822](https://images.astronet.ru/pubd/2002/01/23/0001174416/ngc6822_noao.preview.jpg)
23.01.2002
Nearby galaxy NGC 6822 is irregular in several ways. First, the galaxy's star distribution merits a formal classification of dwarf irregular, and from our vantage-point the small galaxy appears nearly rectangular. What strikes...
![Квантовая гравитация обнаружена на Земле?](https://images.astronet.ru/pubd/2002/01/23/0001174425/quantumgravity_npac.preview.jpg)
22.01.2002
Does gravity come in chucks? A theory known as Quantum Mechanics tells us about how the universe works on the smallest scales, while Einstein's General Theory of Relativity tells us about how gravity and the universe works on the largest scales. So far, no complete theory has been able to encompass them both.
![Вулкан и северное сияние в Исландии](https://images.astronet.ru/pubd/2002/01/21/0001174400/volcanoaurora2_shs.preview.jpg)
21.01.2002
Sometimes both heaven and Earth erupt. In Iceland in 1991, the volcano Hekla erupted at the same time that auroras were visible overhead. Hekla, one of the most famous volcanoes in the world, has erupted at least 20 times over the past millennium, sometimes causing great destruction.
![Полноликая Каллисто](https://images.astronet.ru/pubd/2002/01/20/0001174387/callisto3_gal.preview.jpg)
20.01.2002
Callisto's surface shows its age. While probably formed at the same time as Io, the difference between the surfaces of these two moons of Jupiter could hardly be greater. Io's surface is young, shows practically no impact craters, and is continually being repaved by the lava exploding from its many large volcanoes
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