Which telescope will be 1st to find alien life? Scientists have some ideas 

 Tests suggest the European Extremely Large Telescope will be able to detect crucial biosignatures on other worlds. 

https://cdn.mos.cms.futurecdn.net/chkbKQ2eSevkMMn2h9PTPJ.jpg

https://www.space.com/telescope-alien-biosignatures-extraterrestrial-life-elt