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Astronomy Picture Of the Day (APOD)
![Галерея квазаров](https://images.astronet.ru/pubd/2003/08/18/0001192440/qsohosts_hst.preview.jpg)
5.12.1997
QUASARs (QUASi-stellAR objects) lie near the edge of the observable Universe. Discovered in 1963, astronomers were astounded that such objects could be visible across billions of light-years, as this implies they must emit prodigious amounts of energy. Where does the energy come from?
![Смотря через галактики](https://images.astronet.ru/pubd/2003/08/18/0001192439/ngc5090_white.preview.gif)
4.12.1997
In this dramatic picture, spiral galaxy NGC 5091 appears in the foreground. Tilted nearly edge-on, the dust lanes between its spiral arms are clearly visible. The large elliptical galaxy NGC 5090 lies just beyond it - both are about 100 million light years distant in the southern constellation Centaurus. Can you see through the spiral galaxy?
![Небо, полное планет](https://images.astronet.ru/pubd/2003/08/18/0001192438/sky_bridgman_big.preview.jpg)
3.12.1997
Look up tonight. Just after sunset, the crescent moon and all five "naked-eye" planets (Mercury, Venus, Mars, Jupiter, and Saturn) will be visible (depending on your latitude), lying near our solar system's ecliptic plane.
![Убегающая звезда](https://images.astronet.ru/pubd/2003/08/18/0001192437/runaway_eso_big.preview.jpg)
2.12.1997
Runaway stars are massive stars traveling rapidly through interstellar space. Like a ship plowing through the interstellar medium, runaway star HD 77581 has produced this graceful arcing bow wave or "bow shock" - compressing the gaseous material in its path.
![Микроквазар GRS1915 раздувается](https://images.astronet.ru/pubd/2003/08/18/0001192436/bhexplode_merlin_big.preview.gif)
1.12.1997
On the far side of our Galaxy, gas clouds explode away from a small black hole. This might seem peculiar, as black holes are supposed to attract matter. But material falling toward a black hole collides and heats up, creating an environment similar to a quasar that is far from stable.
![Орион: большая картина](https://images.astronet.ru/pubd/2003/08/18/0001192435/orionfull_jcc_big.preview.jpg)
30.11.1997
Orion is big. Some of the stars that form the constellation of Orion are part of a giant gas cloud complex that stretches over 100 light years and appears more than 50 times the diameter of the Moon.
![Меркурий: ад, покрытый кратерами](https://images.astronet.ru/pubd/2005/05/04/0001205456/merc2_m10.preview.gif)
29.11.1997
Mercury's surface looks similar to our Moon's. Each is heavily cratered and made of rock. Mercury's diameter is about 4800 km, while the Moon's is slightly less at about 3500 km (compared with about 12,700 km for the Earth). But Mercury is unique in many ways.
![Лазеры звезды Эта Киля](https://images.astronet.ru/pubd/2003/08/18/0001192433/eta_laser_big.preview.jpg)
28.11.1997
Have you heard about the great LASER light show in the sky? A team led by K. Davidson (U. Michigan) and S. Johansson (U. Lund) discovered that the chaotically variable star Eta Carinae emits ultraviolet light in such a narrow band that it is most probably LASER light!
![Снова бета Живописца](https://images.astronet.ru/pubd/2003/08/18/0001192432/betapic_eso_big.preview.jpg)
27.11.1997
In the early 1980s, Beta Pictoris became one of the most important stars in the sky. Satellite and ground-based telescopic observations revealed the presence of a surrounding outer disk of material and an inner "clear" zone about the size of our solar system - strong evidence for the formation of planets.
![Внутренние спутники Юпитера](https://images.astronet.ru/pubd/2003/08/18/0001192431/jupinner_gal_big.preview.jpg)
26.11.1997
The potato-shaped inner moons of Jupiter are lined-up in this mosaic "family portrait" of these tiny Jovian satellites. The individual images were recorded over the last year by NASA's Galileo spacecraft and are scaled to the moons' relative sizes.
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