6 biggest mysteries of physics, which still fails to solve

What is dark energy? The universe continues to expand faster, despite the fact that the main action in her power - the power of gravity, or gravity - it counteracts . Given this, the astrophysicists have assumed that there is an invisible agent that counteracts this same gravity. They call it dark energy.
The conventional understanding of dark energy - a "cosmological constant", an inherent property of space itself, which has a "negative pressure". The more space expands, the more it (space) is created, and with it the dark energy. Based on the observed growth of the universe, scientists have concluded that dark energy must be at least 70% of the total content of the universe.

What is dark matter? It is clear that about 84% of matter in the universe does not absorb or emit light. Dark matter can not be directly seen.

Why is there a "time arrow»? Time is moving forward.
"Arrow of Time" - a concept that describes the time as a straight line extended from the past to the future. "In all processes there is a preferred direction in which the processes are themselves from a more ordered state to a less orderly." But the main question is: why entropy was low at the time of the birth of the universe, when a relatively small space overflowed enormous energy?

Are there parallel universes? Astrophysical data suggest that the space-time continuum can be "flat" and not curved, and then he continued infinite

Why does matter much more than anti-matter? The question is not even why matter more than the oppositely charged antimatter, and that, why something exists at all.

How to measure the collapse of the quantum wave functions? In the strange realm of photons, electrons and other elementary particles, quantum mechanics is the law. The particles do not behave like tiny balloons, they act as a wave,
The particle has a range of values ​​for all properties of the up to that time,


via naked-science.ru/article/top/6-krupneishikh-tain-fiziki-kot