The age-old question, "Are we alone in the universe?" continues to this day.  With at least 1 billion trillion stars like our own sun scattered across a seemingly infinite universe, the question of life on other planets is not only plausible, but certainly probable.  To think we’re the only intelligent life in the universe is akin to our ancestors who believed the earth was flat or that the sun revolved around the earth - that we were the center of everything.

Some scientists estimate there are 10 trillion galaxies in the observable universe.  If that holds, there's likely 1,000,000,000,000,000,000,000,000 stars and 19,000,000,000,000,000,000,000 stars like our sun. 

Extrapolations at this scale can be mind-boggling, but the net-net is scientists estimate there are likely billions of solar systems that are structurally like ours.

Is there life on other planets?  Most probably, yes.  And, in the context of the above topics, humankind are intellectual toddlers splashing in the shallow-end of science and physics.   

What we thought was impossible 2 decades ago is our reality today.  What we think is patently impossible today may likely be common place in the not-to-distant-future.  Intergalactic travel? Impossible by today’s standards - but we don’t know what we don’t know.

Against the backdrop of the big question, “Is there life in the universe?”, CNN's 2017 report on a classified US Department of Defense: Advanced Aerospace Threat Identification Program began to examine phenomenon they couldn't explain.

World renowned astrophysicist, Neil DeGrasse Tyson pushes back on the notion UFO doesn't imply aliens, however he agrees "the universe is rife with mystery." 

It is simply not known what's happening in the skies from time-to-time - but there are emerging credible reports that something remarkable is happening.