Pentagon officials wrote in a document released earlier this month that it is entirely possible that aliens are visiting our solar system and releasing tiny probes to perform small-scale reconnaissance missions like the ones the National Aeronautics and Space Administration (NASA) conducts on other planets. 

 The report, authored by Dr. Sean Kirkpatrick, the director of the US Department of Defense's All-domain Anomaly Resolution Office (AARO) and Avi Loeb, former chair of Harvard University's Department of Astronomy, was published on March 7 and focuses on the physical constraints of unidentified aerial phenomena. 
 They explained that extraterrestrials may be exploring our solar system using what they call "dandelion seeds." These are very small spacecraft that can collect and transmit information, similar to NASA's probes. 

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