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Astronomy Picture Of the Day (APOD)
![Год разрешения фона неба на отдельные источники](https://images.astronet.ru/pubd/2000/12/31/0001164483/cmbmap_maxima_big.preview.gif)
29.12.2000
No matter which direction you look, no matter what type of light you see, the sky glows - but why? The sources of many of these background radiations have remained long-standing puzzles, but this millennial year brought some partial resolutions.
![Темная туманность Конская Голова](https://images.astronet.ru/pubd/2000/12/29/0001164477/kellyhenden_horsehead_big.preview.jpg)
28.12.2000
While drifting through the cosmos, sculpted by stellar winds and radiation, this magnificent interstellar dust cloud has chanced to assume a recognizable shape. Fittingly named The Horsehead Nebula it is embedded in the immense complex of star forming gas and dust surrounding the Orion Nebula some 1,500 light-years distant.
![Моря и горы на Луне](https://images.astronet.ru/pubd/2000/12/28/0001164431/moon3rd_armstrong_big.preview.jpg)
27.12.2000
This arresting image of the third quarter moon in the excellent skies above the Pine Crest Farm Observatory, Dell Prairie, Wisconsin, was recorded with a 24 inch telescope and digital camera on October 19.
![Пылевой и ионный хвосты кометы Хейла-Боппа](https://images.astronet.ru/pubd/2000/12/27/0001164430/halebopp_gleason_big.preview.jpg)
26.12.2000
In 1977, Comet Hale-Bopp's intrinsic brightness exceeded any comet since 1811. Since it peaked on the other side of the Earth's orbit, however, the comet appeared only brighter than any comet in two decades. Visible above are the two tails shed by Comet Hale-Bopp.
![Юпитер, Ио и ее тень](https://images.astronet.ru/pubd/2000/12/26/0001164421/jupiterIo_cassini_big.preview.gif)
25.12.2000
Just as planets orbit our Sun, Jupiter's Moons orbit Jupiter. Pictured above is the closest of Jupiter's Galilean Satellites, Io, superposed in front of the giant planet it circles. To the left of Io is a dark spot that is its own shadow.
![Древо затмения](https://images.astronet.ru/pubd/2000/12/25/0001164401/eclipsetree_ejisrael_big.preview.jpg)
24.12.2000
If you look closely at the shadow of this tree, you will see something quite unusual: it is composed of hundreds of images of a partially eclipsed Sun. Early today, trees across North America will be casting similar shadows as a partial eclipse of the Sun takes place.
![NGC 1850: газовые облака и звездные скопления](https://images.astronet.ru/pubd/2000/12/25/0001164342/ngc1850b_vlt_big.preview.jpg)
23.12.2000
There's nothing like it in our own Galaxy. Globular clusters as young as NGC 1850 don't exist here. Globular clusters only 40 millions of years old can still be found in the neighboring LMC galaxy, though, but perhaps none so unusual as NGC 1850.
![На Южном полюсе лето](https://images.astronet.ru/pubd/2000/12/25/0001164341/earthsp_gal_big.preview.jpg)
22.12.2000
The December solstice brings the beginning of Winter to Earth's Northern Hemisphere and Summer time to the South! This view of Earth's Southern Hemisphere near the beginning of Summer was created using images from the Galileo spacecraft taken during its December 1990 flyby of our fair planet.
![Компьютерная модель звезды-сверхгиганта](https://images.astronet.ru/pubd/2000/12/25/0001164340/supergiantsim_freytag.preview.jpg)
21.12.2000
Looking for that perfect holiday gift for an astronomer? Consider this "star in a box". Of course, the box is actually a computational box consisting of a three dimensional grid of points, and the star is a virtual one whose physical properties and internal dynamics are numerically simulated at the points on the grid.
![Солнцестояние и затмение сезона](https://images.astronet.ru/pubd/2000/12/21/0001163964/eclipse_gauthier_c.preview.jpg)
20.12.2000
Today the Sun reaches its southernmost point in planet Earth's sky at 13:37 UT. This celestial event is known as a solstice, marking the beginning of Summer in the Southern Hemisphere and Winter in the North.
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