Plausible Extraterrestrial Life, Unproven Visitations: Science, Searches, and Skepticism

To the point

Visiting aliens have not been proven, life elsewhere remains plausibly real and actively searched for, Barack Obama and Donald Trump sparked debate without evidence of contact, Breakthrough Listen and Rubin Observatory seek biosignatures and technosignatures while 1I/ʻOumuamua and 3I/ATLAS are largely explained by natural causes, and Avi Loeb calls for more aggressive technosignature work but insists extraordinary evidence is required.