Andrew Sepielli in Aeon:
Rather than focusing on how people and societies think and talk about morality, normative ethicists try to figure out which things are, simply, morally good or bad, and why. The philosophical sub-field of meta-ethics adopts, naturally, a ‘meta-’ perspective on the kinds of enquiry that normative ethicists engage in. It asks whether there are objectively correct answers to these questions about good or bad, or whether ethics is, rather, a realm of illusion or mere opinion.
Most of my work in the past decade has been in meta-ethics. I believe that there are truths about what’s morally right and wrong. I believe that some of these truths are objective or, as they say in the literature, ‘stance-independent’. That is to say, it’s not my or our disapproval that makes torture morally wrong; torture is wrong because, to put it simply, it hurts people a lot. I believe that these objective moral truths are knowable, and that some people are better than others are at coming to know them. You can even call them ‘moral experts’ if you wish.
More here.