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You entered: Einstein
![Обращение вокруг чёрной дыры в фотонной сфере](https://images.astronet.ru/pubd/2013/07/03/0001289801/bh_photon_sphere.preview.png)
2.07.2013
What would it look like to go right up to a black hole? One particularly interesting place near a black hole is its photon sphere, where photons can orbit in circles, a sphere 50 percent further out than the event horizon.
![Красная Луна и зелёный луч](https://images.astronet.ru/pubd/2014/04/18/0001308384/D140414_47_ApolloEclipse_AFCc_16f_950.preview.jpg)
18.04.2014
This is not a scene from a sci-fi special effects movie. The green beam of light and red lunar disk are real enough, captured in the early morning hours of April 15. Of course, the reddened lunar disk is easy to explain as the image was taken during this week's total lunar eclipse.
![SN Рефсдаль: первое предсказанное изображение сверхновой](https://images.astronet.ru/pubd/2015/12/21/0001351545/Refsdal_Hubble_1080.preview.jpg)
21.12.2015
It's back. Never before has an observed supernova been predicted. The unique astronomical event occurred in the field of galaxy cluster MACS J1149.5+2223. Most bright spots in the featured image are galaxies in this cluster.
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