Dr.Cesarsky sananne ne don ayyukanta na bincike a wurare da yawa na tsakiya na ilmin taurari na zamani.Sashin farko na aikinta ya kebe ne ga yanki mai karfi.Wannan ya kunshi nazarin yaduwa da abun da ke ciki na haskoki na sararin samaniya na galactic,na kwayoyin halitta da filayen a cikin tsaka-tsakin tsaka-tsakin tsaka-tsakin tsaka-tsakin,da kuma hanzarin barbashi a cikin girgizar astrophysical,misali dangane da supernovae.
Sai ta juya zuwa infrared astronomy. Ita ce babbar mai binciken kyamarar da ke cikin Infrared Space Observatory na Hukumar Kula da Sararin Samaniya ta Turai,wacce ta tashi tsakanin 1995 zuwa 1998.Don haka,ta jagoranci shirin tsakiya, wanda ya yi nazari game da fitar da infrared daga wurare daban-daban na galactic da extragalactic kuma ya haifar da sababbin abubuwa masu ban sha'awa game da samuwar taurari da juyin halitta.An karfafa wadannan ta hanyar karin lura tare da ESO VLT, tauraron dan adam Spitzer kuma yanzu Herschel.