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Astronomy Picture Of the Day (APOD)
![Медленный взрыв](http://images.astronet.ru/pubd/2003/03/25/0001188160/wr124_hst.preview.jpg)
24.03.2003
Why would a gamma ray burst fade so slowly? This behavior, recorded last October, is considered a new clue into the cause of gamma-ray bursts, the most powerful explosions known in the universe.
![Заход Солнца над Европой и Африкой в цифровом формате](http://images.astronet.ru/pubd/2003/03/24/0001188144/europesunset_livingearth.preview.jpg)
23.03.2003
No single spacecraft or astronaut took this picture. It is a digital composite of archived images taken over many orbits by several Earth-orbiting satellites. Similar images can be digitally stitched together for any Earth location by John Walker's Earth and Moon Viewer website.
![Альфа Центавра: ближайшая звездная система](http://images.astronet.ru/pubd/2003/03/23/0001188088/alphacen_eso.preview.jpg)
22.03.2003
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](http://images.astronet.ru/pubd/2003/03/22/0001188082/m57ring_hst.preview.jpg)
21.03.2003
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](http://images.astronet.ru/pubd/2003/03/21/0001187868/moonhalo_kangas_labelc1.preview.jpg)
20.03.2003
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](http://images.astronet.ru/pubd/2003/03/21/0001187990/analemma0600UT_ayiomamitis_c2.preview.jpg)
19.03.2003
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](http://images.astronet.ru/pubd/2003/03/19/0001187798/jupspot_cassini_c1.preview.jpg)
18.03.2003
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](http://images.astronet.ru/pubd/2003/03/18/0001187779/holes_soho.preview.jpg)
17.03.2003
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](http://images.astronet.ru/pubd/2003/03/17/0001187768/sn1006_noao.preview.jpg)
16.03.2003
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](http://images.astronet.ru/pubd/2003/03/16/0001187718/ngc253c_hst.preview.jpg)
15.03.2003
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.
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