Question: If we know that dark matter doesn’t interact with normal matter (however we know it either has mass or affects space time in some other way) how do we plan to detect it?

Tiffany Chan answered on 30 Jun 2020:

Hi Seamus! This isn’t my field, so I’m definitely not an expert on this. As you say though, it’s really difficult to detect dark matter because it doesn’t interact with electromagnetic radiation, making it essentially invisible. There are three categories of experiments that people are trying to detect dark matter: 1) indirect detection – looking for things that are produced from dark matter particles colliding/decaying ; 2) creation of dark matter – this is one of the things that the Large Hadron Collider is trying to do ; 3) direct detection – looking for interactions with normal matter (it’s possible that it does happen, but it’s just extremely weak)