Gravitational Machines
It&#x27;s an article from 1962:<p>&quot;After the detection of the gravitational wave GW170817, Jason T. Wright (Physics Today, 72, 5, 12, 2019) reminded
the community that many of its features had been predicted by Dyson more than half a century earlier. Dyson’s article was
published only once, in Cameron’s long out of print collection, though a scan may be found at the web site of the Gravity
Research Foundation (<a href="https:&#x2F;&#x2F;www.gravityresearchfoundation.org" rel="nofollow">https:&#x2F;&#x2F;www.gravityresearchfoundation.org</a>). Dyson thought it had been reprinted (in his Selected
Papers, AMS Press, 1996, forward by Elliot H. Lieb) but it was not. Hoping to make the article easier to find, I wrote Dyson
for his permission to post it at the arXiv&quot;<p>It&#x27;s about using two big bodies, A and B, to accelerate objects: &quot;The energy source of the machine is the gravitational potential between the stars A and B. As the machine continues to operate, the stars A and B will gradually be drawn closer together, their negative potential energy will increase and their orbital velocity V will also increase.&quot;