The vanishing dimensions of the Universe

Cosmology sometimes seems mysterious: you often hear about dark matter, dark energy, big bang, multiverse, extra dimensions… I think we can undoubtedly say that our Universe is weird… And fascinating. A problem with some of these yet to be explained mysteries is that the models created to describe them are mainly …

Solving the cosmological constant problems

Why is the expansion of the Universe accelerating? This question is one of the biggest mysteries faced by cosmologists; it is so puzzling that they finally called what causes the expansion to accelerate dark energy. Nobody knows the nature of this energy, as we have only been able to observe …

Remeasuring the Universe

Astronomers have just pushed another limit. They have directly measured the distance of a remote galaxy: it is 450 million light-years away from Earth, three times further in the cosmos than the previous record.
The Very Long Baseline Array (VLBA) is a system of ten radio telescopes controlled remotely from the Array …

The fate of the Universe

When thinking about the Universe and looking at the sky, a natural question comes to everyone’s mind: how did all of this begin?
It is today commonly accepted that everything started with the Big Bang, a primordial explosion from which the Universe we see today has expanded.
On the other hand, you …

The size of the Universe: at least 250 times larger than what is visible

Estimating the size of the Universe has never been easy; the Universe being approximately 13.7 billion years old, many objects are too far away to be visible (their light did not have enough time to reach us). A team of researchers has recently used the Bayesian model averaging, a form …

 Page 3 of 4 « 1  2  3  4 »

© 2010-2017 Atra Materia All Rights Reserved -- Copyright notice by Blog Copyright