Space

Who discovered the black hole in the center of the Milky Way?
What is the distance from the Sun to the Earth?
What are neutron stars?

On the pages of this encyclopedia, you will find many interesting facts about the mysteries of the Universe! For example, you will learn how long a day lasts on Jupiter and what the Great Attractor is, how many moons Uranus has, and which open star clusters are the brightest. You will also be able to take a close look at black holes and mini-satellites, dwarf galaxies, and Mount Olympus.