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Astronomy Picture Of the Day (APOD)
![По данным марсохода Оппортьюнити когда-то на Марсе была вода](https://images.astronet.ru/pubd/2004/03/03/0001196787/emptynest_opportunity.preview.jpg)
3.03.2004
Was Mars ever wet enough to support life? To help answer this question, NASA launched two rover missions to the red planet and landed them in regions that satellite images indicated might have been covered with water.
![NGC 6960: туманность Ведьмина Метла](https://images.astronet.ru/pubd/2004/03/02/0001196777/veil_noao.preview.jpg)
2.03.2004
Ten thousand years ago, before the dawn of recorded human history, a new light must suddenly have appeared in the night sky and faded after a few weeks. Today we know this light was an exploding star and record the colorful expanding cloud as the Veil Nebula.
![Кассини приближается к Сатурну](https://images.astronet.ru/pubd/2004/03/01/0001196772/saturn0402_cassini.preview.jpg)
1.03.2004
Are they gone? They were not originally predicted to even be there. The mystery revolves around strange shadow-like spokes that appeared on Saturn's large B-ring, the large middle ring in the complex system of particles that orbits Saturn.
![Юлий Цезарь и високосные дни](https://images.astronet.ru/pubd/2004/02/29/0001196757/jcaesar_coin.preview.jpg)
29.02.2004
Today, February 29th, is a leap day - a relatively rare occurrence. In 46 BC, Julius Caesar, pictured above in a self-decreed minted coin, created a calendar system that added one leap day every four years.
![POX 186: не так давно](https://images.astronet.ru/pubd/2004/02/28/0001196751/pox186_hst.preview.jpg)
28.02.2004
Not so long ago and not so far, far away, a galaxy was born. Seen in this Hubble Space Telescope image, the island universe of stars, gas, and dust cataloged as POX 186 is a mere 68 million light-years distant toward an uncrowded region in the constellation Virgo.
![Слухи о странной Вселенной](https://images.astronet.ru/pubd/2007/05/30/0001222229/hiZsn_hubble_c1.preview.jpg)
27.02.2004
Only a few short years ago, when the APOD editors were in graduate school, the pervasive, cosmic Dark Energy was not even seriously discussed. Of course, it now appears that this strange energy dominates the cosmos (as well as lectures on cosmology) and provides a repulsive force accelerating the large scale expansion of the Universe.
![Скопление галактик в ранней Вселенной](https://images.astronet.ru/pubd/2004/02/26/0001196709/rdcs1252_xray_opt_c1.preview.jpg)
26.02.2004
Long before medieval alchemists dreamed of transmuting base metals to gold, stellar furnaces in this massive cluster of galaxies - cataloged as RDCS 1252.9-2927 - had transformed light elements into heavy ones. In the false-color composite image individual cluster galaxies can be seen at optical and near-infrared wavelengths, shown in red, yellow, and green colors.
![Скала "Белая лодка" на Марсе](https://images.astronet.ru/pubd/2004/02/25/0001196669/whiteboatrock_spirit.preview.jpg)
25.02.2004
What caused this rock to have an unusual shape? Earlier this month the robot Spirit rover on Mars stopped to examine a rock dubbed "white boat", named for its unusually light color and shape.
![Рентгеновское излучение показывает, что черная дыра разорвала звезду](https://images.astronet.ru/pubd/2004/02/24/0001196650/bhstar_chandra.preview.jpg)
24.02.2004
What could rip a star apart? A black hole. Giant black holes in just the right mass range would pull on the front of a closely passing star much more strongly than on the back.
![Небеса встречаются с Землей](https://images.astronet.ru/pubd/2004/02/23/0001196647/skymt_payne.preview.jpg)
23.02.2004
If sometimes it appears that the entire Milky Way Galaxy is raining down on your head, do not despair. It happens twice a day. As the Sun rises in the East, wonders of the night sky become less bright than the sunlight scattered by our own Earth's atmosphere, and so fade from view.
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