9 things we learned about aliens in 2021

A “doughnut UFO” in the skies over Switzerland. Strange green lights vanishing into the clouds above Canada. A saucer-shaped blob plunging suddenly into the ocean.

The year 2021 gave truth-seekers and alien hunters no shortage of mysteries to ponder. But it also gave them answers — from a hotly anticipated Pentagon report on military UFO sightings, to new insights on habitable exoplanets, to the truth about a so-called “alien signal” from the sun’s nearest neighboring star. Here are 9 things we learned about aliens (and where to look for them) in 2021.