Did You Know Earth’s radio signals have reached 29 possible alien worlds. Earth’s radio signals have reached 29 possible alien worlds. If life exists there, they may already know about us. So why no reply? Maybe they’re silent, extinct, or can’t hear us. #space,#aliens,#exoplanets,#radio,#seti,#cosmos,#universe,#science,#nasa,#mystery,#darkforest,#astrophysics,#fyp,#viral,#didyouknow,#astronomy,#stars,#galaxy,#earth,#technology,#signals,#ufo,#contact,#unknown,#future,#deepSpace,#cosmic,#outerspa