<prompt> Tšweletša mohuta o raraganego kudu wa polelo ye Mafelelong, John Crichton o ile a ya kholetšheng mohlomongwe MIT, a ithuta cosmology le astrophysics, gomme a hwetša Ph.D. ka theoretical physics.  <response>: Ee, phetolelo e raraganego kudu ya polelwana ke e rego Mafelelong, John Crichton o ile a ya yunibesithing mohlomongwe MIT gomme a ikhwetša a latela mohlala wa tatagwe ge a be a ithuta thutalobopo le astrophysics, a fihlelela Ph.D. gomme, gotee le mogwera wa gagwe DK, a hlama kgopolo ya gagwe ka noši mabapi le go šuthišwa ka matla-kgogedi. 