You mean the hypothetical oort cloud? Because we don't know where that is either. This is news because they have confirmed their hypothesis again. This is how s

You mean the hypothetical oort cloud? Because we don't know where that is either. This is news because they have confirmed their hypothesis again. This is how science works. It's not just one experiment and then it's time go home. Besides, have you ever seen any data from interstellar plasma before? Well they have, now.