I understand that&#x27;s why <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;KAGRA" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;KAGRA</a> is cryogenic. Kip Thorne mentioned it during the Q&amp;A@ <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=aEPIwEJmZyE" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=aEPIwEJmZyE</a><p>Are their suspected GW sources in the thermal ~(7um&#x2F;42MHz) range?