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Astronomy Picture Of the Day (APOD)
![Альфа Центавра: ближайшая звездная система](https://images.astronet.ru/pubd/2003/03/23/0001188088/alphacen_eso.preview.jpg)
23.03.2003
The closest star system to the Sun is the Alpha Centauri system. Of the three stars in the system, the dimmest -- called Proxima Centauri -- is actually the nearest star. The bright stars Alpha Centauri...
![M57: Кольцевая Туманность](https://images.astronet.ru/pubd/2003/03/22/0001188082/m57ring_hst.preview.jpg)
22.03.2003
Except for the rings of Saturn, the Ring Nebula (M57) is probably the most famous celestial band. This planetary nebula's simple, graceful appearance is thought to be due to perspective -- our view from planet Earth looking straight into what is actually a barrel-shaped cloud of gas shrugged off by a dying central star.
![Звезды и планеты в лунном гало](https://images.astronet.ru/pubd/2003/03/21/0001187868/moonhalo_kangas_labelc1.preview.jpg)
21.03.2003
Photographed on March 13th from Caledon, Ontario, Canada, a bright Moon was surrounded by this lovely halo. Planet Jupiter and stars Procyon, Castor, and Pollux also appear within the circle of lunar light. Castor...
![Моменты восхода Солнца на аналемме](https://images.astronet.ru/pubd/2003/03/21/0001187990/analemma0600UT_ayiomamitis_c2.preview.jpg)
20.03.2003
Astronomically speaking, at the Equinox on March 21, 01:00 UT (March 20, 8:00 PM ET) the season changes. For this Equinox the Sun rises due east as it crosses the celestial equator heading north. In celebration, consider this spectacular sunrise analemma!
![Большое Темное пятно на Юпитере](https://images.astronet.ru/pubd/2003/03/19/0001187798/jupspot_cassini_c1.preview.jpg)
19.03.2003
Seventeenth century astronomer Giovanni Domenico Cassini was an astute observer of Jupiter's Great Red Spot. So it seems only fitting that his namesake, the Cassini spacecraft, has enabled detailed observations of another planet-sized blemish -- Jupiter's Great Dark Spot.
![Корональные дыры на Солнце](https://images.astronet.ru/pubd/2003/03/18/0001187779/holes_soho.preview.jpg)
18.03.2003
The ominous, dark shapes haunting the left side of the Sun are coronal holes -- low density regions extending above the surface where the solar magnetic field opens freely into interplanetary space. Studied extensively from...
![SN 1006: самая яркая сверхновая в истории](https://images.astronet.ru/pubd/2003/03/17/0001187768/sn1006_noao.preview.jpg)
17.03.2003
Suddenly, in the year 1006 AD, a new star appeared in the sky. Over the course of just a few days, the rogue star became brighter than the planet Venus. The star, likely...
![NGC 253: галактика в созвездии Скульптор](https://images.astronet.ru/pubd/2003/03/16/0001187718/ngc253c_hst.preview.jpg)
16.03.2003
NGC 253 is not only one of the brightest spiral galaxies visible, it is also one of the dustiest. Discovered in 1783 by Caroline Herschel in the constellation of Sculptor, NGC 253 lies only about ten million light-years distant.
![Аполлон-12: автопортрет](https://images.astronet.ru/pubd/2003/03/15/0001187666/bean_conrad.preview.jpg)
15.03.2003
Is it art? In November of 1969, Apollo 12 astronaut-photographer Charles "Pete" Conrad recorded this masterpiece while documenting colleague Alan Bean's lunar soil collection activities on the Oceanus Procellarum. The image is dramatic and stark. Bean is faceless.
![DEM L71: когда взрываются маломассивные звезды](https://images.astronet.ru/pubd/2003/03/14/0001187638/deml71_cxc_c1.preview.jpg)
14.03.2003
Large, massive stars end their furious lives in spectacular supernova explosions -- but small, low mass stars may encounter a similar fate. In fact, instead of simply cooling off and quietly fading away, some white...
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