We had a thread on this about a year ago.
The reference to NASA is deceptive because the scientists who actually confirmed it are consultants for NASA and not official NASA spokesmen. And they apparently part of a "fringe" science experimental consultative group which is only tenuously associated with NASA.
Besides that bit of information, many other reports on this "Discovery" say that the results are unexplained and un-reproducible.
When I read the "Explanation" for the discovery I found it very fishy sounding with lots of scientific terminology but very little actual measurable or understandable explanation. Exactly the opposite of what you would expect from a reputable source.