On-device AI generated summary:

MIT scientists have successfully imaged how heat travels in a wave, known as “second sound,” through a superfluid quantum gas. This phenomenon, where heat propagates like a wave rather than spreading out, has been observed before but never imaged. The study, published in the journal Science, could help answer questions about high-temperature superconductors and neutron stars.

(I have not read the article and have not verified this summary. Yes I am lazy. No I am not ashamed.)