The fact that the expansion of our world is accelerating means that the dark energy exists. But can it be more strange than we imagined?
Our world, as we understood, has undergone a fundamental change at the end of the twentieth century. We have long been assumed – consistent with the evidence that we have, preventing you – that our world was participating in a wonderful cosmic race that started at the beginning of the big hot explosion. On the one hand, the universe was born quickly, but on the other hand, the force of gravity has slowed the expansion and restored things together. For most of the twentieth century, the big question of cosmology was “that is, a motive that will eventually win: gravity or expansion?” After that, in 1998, we got our horrific answer: it will expand forever, but this is because there is a new type of energy that we did not expect, dark energy.
At the time since then, we have Excluding alternative interpretations And measuring the properties of dark energy very well, but there are still many questions. In particular, despite all the ways Our knowledge of cosmology has changed in the twenty -first centuryWe still do not know what dark energy is, or what its properties are really. Could it be strange to most of us …
