Dark matter is an enigma wrapped in a conundrum. We have lots of gravitational evidence for the presence of dark matter. In fact, the evidence is from so many different types of observations, and is all so consistent, that very few astronomers or cosmologists appear to doubt that some type of dark matter exists. That is the enigma: it is very likely to exist, but we know very little of the specific details about what exactly exists.
Going further than that has been a problem. The very nature of dark matter, which makes cosmologists so certain of its existence, means it has the very properties that make it so damn hard to find by any means other than gravity—something of a conundrum, really. A recent paper that looks at how dark matter might be detectable in neutron stars inadvertently makes this problem very clear.
Read the comments on this post
No comments:
Post a Comment