> I thought this was simple. You can't go faster than light. People also thought that time is universal and common for all places. According to history of phy

> I thought this was simple. You can't go faster than light. People also thought that time is universal and common for all places. According to history of physics, theories usually have limits to their applicability. For relativity theory, currently known limits are in the presence of large gravity centers; but it doesn't mean that those are the only limits. Even putting aside elegant, in my view, proposals to circumvent speed limit, like Alcubierre drive, we don't know if this speed limit is "absolute". It's part of very well working theory, yes, but we don't know what we can learn yet.