Panspermia

According to a recent scientific paper (read it here, or an article about it here), the earliest and simplest life might have formed about 10 billion years ago. Since the Earth is only about 4.6 billion years old, that means we all might be descended from aliens! To celebrate this finding, here's a poem in civilization's most perfect poetical form, the limerick!

Two guys were discussing the worth

Of the concept that life predates Earth

And if Moore’s Law applied

To our nucleotides

It’s been 10 billion years since first birth