Some supermassive black holes in the center of galaxies can be the 'portals' to distant areas of the Universe, as evidenced by the results of a study conducted by Russian scientists.
Theoretically, a spacecraft can pass through such a 'portal,' but the crew will have virtually no chance of survival due to its high radiation level.
The article published in the Monthly Notices of the Royal Society says that black holes and 'wormholes' have strong gravity. However, the former, unlike the latter, have no outlet to other areas of the Universe.
Physicist Mikhail Piotrovich, one of the authors of the study, noted that scientists had made little progress in the research of 'wormholes.' The nearest such object is at a distance of 13 million light-years from Earth. Today, this is an unattainable distance for humans.
NEWS.ru reported earlier that Russia eyes using nuclear space tug in Moon exploration.