Epoch Times - Has Humanity Been Visited By Extraterrestrials in the Past?

March 13, 2026 - Epoch Times

01:03

Has Humanity Been Visited By Extraterrestrials in the Past? | Avi Loeb

Avi Loeb argues that humanity's 8,000-year documented history leaves unanswered questions about life's origins, suggesting an "interstellar gardener" may have visited Earth. He critiques sixty-five years of passive radio listening as ineffective compared to a century ago, noting declining signal usage. Instead, Loeb advocates for monitoring the sky with next-generation sensors to detect physical objects, asserting this active search represents a crucial new frontier capable of revealing previously unknown phenomena and fundamentally altering our understanding of cosmic contact. [Automatically generated summary]
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Time	Text
Did Aliens Visit Earth 00:01:03
	So you don't believe that we've been visited?
	Oh, I don't know.
	We may have well been visited.
	In fact, we don't know the history of Earth.
	Documented human history is only 8,000 years old.
	And the question is, what introduced life here on Earth?
	Maybe it was an interstellar gardener.
	We just don't know that.
	And as far as we can do is to basically monitor the sky and check if there are any visitors to our backyard.
	That's the minimum we can do.
	We've been searching for sixty-five years for radio signals, but that's just like waiting for a phone call.
	In fact, we do not use radio communication as much as we did a century ago.
	So I think checking for objects is a new frontier that is enabled by the next generation of sensors that we are starting to employ right now.
	And this offers us a great opportunity to discover things that we've never known about before.

Time

Text

Did Aliens Visit Earth 00:01:03

So you don't believe that we've been visited?

Oh, I don't know.

We may have well been visited.

In fact, we don't know the history of Earth.

Documented human history is only 8,000 years old.

And the question is, what introduced life here on Earth?

Maybe it was an interstellar gardener.

We just don't know that.

And as far as we can do is to basically monitor the sky and check if there are any visitors to our backyard.

That's the minimum we can do.

We've been searching for sixty-five years for radio signals, but that's just like waiting for a phone call.

In fact, we do not use radio communication as much as we did a century ago.

So I think checking for objects is a new frontier that is enabled by the next generation of sensors that we are starting to employ right now.

And this offers us a great opportunity to discover things that we've never known about before.