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Astronomy Picture Of the Day (APOD)
![Новая Лебедя 1992 года](https://images.astronet.ru/pubd/2003/09/19/0001192999/novaCygni_hst.preview.gif)
27.12.1995
In 1992 a tremendous explosion occurred in the constellation of Cygnus. Dubbed Nova Cygni 1992, this event most probably occurred in an accretion disk binary system. Astronomers hypothesize that this system's white dwarf had so much gas dumped onto it's surface that conditions became ripe for nuclear fusion.
![Аккрецирующий диск двойной системы](https://images.astronet.ru/pubd/2002/08/23/0001179154/disk_hst_big.preview.gif)
26.12.1995
Our Sun is unusual in that it is alone - most stars occur in multiple or binary systems. In a binary system, the higher mass star will evolve faster and will eventually become a compact object - either a white dwarf star, a neutron star, or black hole.
![Восход Земли](https://images.astronet.ru/pubd/2002/08/23/0001179153/lg_earthrise_apollo8.preview.gif)
25.12.1995
During the 1968 Christmas season Frank Borman, James Lovell, and William Anders flew the Apollo 8 command module From the Earth to the Moon and back (launched Dec. 21, achieved 10 lunar orbits, landed Dec. 27).
![Спутник Урана Миранда](https://images.astronet.ru/pubd/2002/08/23/0001179152/miranda_vg2_big.preview.gif)
24.12.1995
NASA's robot spacecraft Voyager 2 passed the planet Uranus and its moons in 1986. While the cloud tops of Uranus proved to be rather featureless, the surface of Miranda, the innermost of Uranus' large moons, showed several interesting features.
![Прометей, Пандора и кольцо Сатурна](https://images.astronet.ru/pubd/2002/08/23/0001179160/f_ring_vg1.preview.gif)
23.12.1995
The third and fourth innermost moons of Saturn were unexpectedly discovered to be gravitational "shepards." The inner moon Prometheus and the outer moon Pandora use their gravitational attraction to define Saturn's outermost ring.
![Лето на южном полюсе](https://images.astronet.ru/pubd/2002/08/23/0001179151/earthsp_gal.preview.gif)
22.12.1995
December 22 marks the Winter Solstice - the beginning of winter in the Earth's northern hemisphere, and the first day of summer in the south! This view of Earth's southern hemisphere near the beginning of its summer was created using images from the Galileo spacecraft taken during the December 1990 flyby.
![Горячие звезды в Трехраздельной туманности](https://images.astronet.ru/pubd/2002/08/23/0001179150/trifid_aat.preview.gif)
21.12.1995
In the center of the glowing red gas on the Trifid Nebula lies an open cluster of young hot stars. The energetic light from these stars strikes hydrogen atoms in the surrounding nebula causing them to lose their electrons.
![Гравитационное линзирование на галактике](https://images.astronet.ru/pubd/2002/09/26/0001179887/glens2_hst_big.preview.gif)
20.12.1995
Sometimes it takes a keen eye to see a good mirage. Around the center of the red galaxy image in the above photograph lie four blue "smudges." Each smudge is actually a different image of the same background quasar. The central galaxy happens to fall directly in the light path of the quasar.
![Альберт Эйнштейн (1879-1955)](https://images.astronet.ru/pubd/2003/09/24/0001193291/einstein_clerk_big.preview.gif)
19.12.1995
Albert Einstein is considered by many the greatest astrophysicist. He is pictured here in the Swiss Patent Office where he did much of his great work. Einstein's many visionary scientific contributions include...
![M51 - галактика Водоворот](https://images.astronet.ru/pubd/2002/08/23/0001179147/m51_hall.preview.gif)
18.12.1995
The Whirlpool Galaxy is frequently given as an example of a galaxy with classic spiral design. At only 15 million light years distant, M51, also cataloged as NGC 5194, is also one of the brighter and more picturesque galaxies on the sky.
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