There’s a wild comet from outside our solar system—3I/ATLAS—about to swing by Earth (well, 170 million miles close). Scientists spotted a weird 16-hour light “heartbeat” coming from it. Harvard’s Avi Loeb is already hinting at aliens, but most experts say it’s just spinning and venting gas like a cosmic rotisserie chicken. Still, can’t help but wonder… what if it’s ET? We’ll know more when it passes later this month! #Science #space #comet