The universe is a strange place. There are no dark matter, antimatter and cannibal galaxies. Besides them, invisible black holes complete the picture there are still mysteries for scientists.

Scientists believe that it makes up a large part of matter in the universe. However, it can not be seen or detected with current technology. In what can not be detected black holes would come and invisible. Some scientists question whether dark matter really exists.
Exoplanetele
Up through the 1990s, the only known planets in the universe were those in the solar system. Since then, astronomers have identified no less than 500 exoplanets, that is, planets outside the solar system. Now we are looking for an Earth-like planets, although distance from it would make it practically inaccessible, even if they exist.
Galactic cannibals
As life forms on Earth, galaxies can "eat" each other and can evolve over time. Currently, one of our neighbor galaxy, Andromeda, is "feeding" a natural satellite currently in it. The Andromeda there are remnants of such a past, they being found in the form of groups of stars. More than three billion years the Milky Way, our galaxy, and Andomeda will face.

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