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You entered: water
![Пятнистые дюны на Марсе](https://images.astronet.ru/pubd/2007/08/06/0001222974/dotteddunes_mgs.preview.jpg)
5.08.2007
What causes the black dots on dunes on Mars? As spring dawned on the Northern Hemisphere of Mars in 2004, dunes of sand near the poles begin to defrost. Thinner regions of ice typically thaw first revealing sand whose darkness soaks in sunlight and accelerates the thaw.
![Ландшафт на Плутоне](https://images.astronet.ru/pubd/2015/09/18/0001343637/nh-apluto-mountains-plains-9-17-15.preview.jpg)
18.09.2015
This shadowy landscape of majestic mountains and icy plains stretches toward the horizon of a small, distant world. It was captured from a range of about 18,000 kilometers when New Horizons looked back toward Pluto, 15 minutes after the spacecraft's closest approach on July 14.
![Откуда произошли химические элементы?](https://images.astronet.ru/pubd/2016/01/25/0001354661/Nucleosynthesis_Cmglee_1080.preview.jpg)
25.01.2016
The hydrogen in your body, present in every molecule of water, came from the Big Bang. There are no other appreciable sources of hydrogen in the universe. The carbon in your body was made by nuclear fusion in the interior of stars, as was the oxygen.
![Происхождение химических элементов](https://images.astronet.ru/pubd/2020/08/10/0001685336/Nucleosynthesis2_WikipediaCmglee_1080.preview.jpg)
9.08.2020
The hydrogen in your body, present in every molecule of water, came from the Big Bang. There are no other appreciable sources of hydrogen in the universe. The carbon in your body was made by nuclear fusion in the interior of stars, as was the oxygen.
![Радужные облака над Тамсерку](https://images.astronet.ru/pubd/2014/07/08/0001316851/iridescentmountain_bartunov_960.preview.jpg)
8.07.2014
Why would a cloud appear to be different colors? A relatively rare phenomenon known as iridescent clouds can show unusual colors vividly or a whole spectrum of colors simultaneously. These clouds are formed of small water droplets of nearly uniform size.
![Выброс пыли с поверхности кометы 67P](https://images.astronet.ru/pubd/2017/11/06/0001391843/Jet67P_Rosetta_960.preview.jpg)
6.11.2017
Where do comet tails come from? There are no obvious places on the nuclei of comets from which the jets that create comet tails emanate. Last year, though, ESA's Rosetta spacecraft not only imaged a jet emerging from Comet 67P/Churyumov-Gerasimenko, but flew right through it.
![Марс и Орион над Долиной Монументов](https://images.astronet.ru/pubd/2014/02/02/0001299610/monument_pacholka_960.preview.jpg)
2.02.2014
Welcome to The World At Night. Sharing the night sky seen around the world, this view from Monument Valley, USA includes a picturesque foreground of famous buttes. Buttes are composed of hard rock left behind after water eroded away the surrounding soft rock.
![Выброс пыли с поверхности кометы 67P](https://images.astronet.ru/pubd/2023/11/26/0001912986/Jet67P_Rosetta_960.preview.jpg)
26.11.2023
Where do comet tails come from? There are no obvious places on the nuclei of comets from which the jets that create comet tails emanate. In 2016, though, ESA's Rosetta spacecraft not only imaged a jet emerging from Comet 67P/Churyumov-Gerasimenko, but flew right through it.
![Океаны жизни на Европе?](https://images.astronet.ru/pubd/2002/10/18/0001180431/europa2_vgr.preview.gif)
6.08.1996
Is there life beneath Europa's frozen surface? Some believe the oceans found there of carbon-enriched water are the best chance for life, outside the Earth, in our Solar System. Europa, the fourth largest moon of Jupiter, was recently discovered to have a thin oxygen atmosphere by scientists using the Hubble Space Telescope.
![Замерзшие изображения](https://images.astronet.ru/pubd/2005/02/26/0001203055/illume_wasilewski_full.preview.jpg)
26.02.2005
Scientific images of cosmic dust clouds or even frozen water can be esthetic too. In fact, this picture of thin layers of forming ice crystals uses a scientific understanding of light's wave properties solely for artistic purposes. Titled "Illume", the picture was created by astrophysicist Peter Wasilewski.
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