Aleteia logoAleteia logo
Tuesday 27 July |
Saint of the Day: St. Simeon Sylites
home iconNews
line break icon

Scientists just unearthed the oldest fossils in the world… and they may point to life on Mars

Kevin Walsh CC

Zoe Romanowsky - published on 03/06/17 - updated on 03/27/17

Organisms were thriving here for hundreds of millions of years earlier than originally thought

A research team at the University College London has discovered microfossils in rock formations dating back to 4.3 billion years ago, when the area was an ocean, rich in iron. The UK’s Telegraph reports that the tiny lifeforms were discovered in Quebec, Canada, in an area that contains some of the oldest sedimentary rocks in the world.

The research about the discovery was originally published in the journal Nature.

This is the most significant evidence found to date that organisms could also have evolved on the planet Mars, which back then still had oceans and an atmosphere and was being bombarded by comets. Scientists believe these comets were responsible for the building blocks of life on Earth.

Since early Earth and early Mars were so similar, the research team who made the recent discovery think there may have been life on both planets at that time.

“We know that life managed to get a foothold and evolve rapidly on Earth. So if we have life evolving in hydrothermal vent systems maybe even 4.2 billion years ago when both planets had liquid water on their surface, then we would expect both planets to develop early life,” said Matthew Dodd, a doctoral student and the lead author of the study which was co-funded by NASA. “If we do future sample returns from Mars and look at similarly old rocks and we don’t find evidence of life then this certainly may point to the fact that Earth might have been a very special exception, and life may just have arisen on Earth.”

Before this discovery, the oldest microfossils ever found were in Western Australia and dated 3.4 billion years ago, which led scientists to believe that life on Earth started around 3.7 billion years ago. But the new fossils suggest living organisms could have on Earth as early as 4.5 billion years ago, just a hundred million years after the Earth was formed.

If similar life is found on Mars it could indicate that life here may have had a Martian origin, but some scientists say that it’s more plausible that life on both planets evolved at the same time, with Mars’ fizzling out and Earth’s blossoming.

Read more here about why Dan Brown, a space expert from Nottingham Trent University, says the discovery is so exciting.

Support Aleteia!

If you’re reading this article, it’s thanks to the generosity of people like you, who have made Aleteia possible.

Here are some numbers:

  • 20 million users around the world read every month
  • Aleteia is published every day in seven languages: English, French, Italian, Spanish, Portuguese, Polish, and Slovenian
  • Each month, readers view more than 50 million pages
  • Nearly 4 million people follow Aleteia on social media
  • Each month, we publish 2,450 articles and around 40 videos
  • We have 60 full time staff and approximately 400 collaborators (writers, translators, photographers, etc.)

As you can imagine, these numbers represent a lot of work. We need you.

Support Aleteia with as little as $1. It only takes a minute. Thank you!

Daily prayer
And today we celebrate...

Top 10
Philip Kosloski
This morning prayer is easy to memorize
Daniel Esparza
5 Curious things you might not know about Catholicism
Joachim and Anne
Philip Kosloski
Did Jesus know his grandparents?
J-P Mauro
Reconstructing a 12th-century pipe organ discovered in the Holy L...
Philip Kosloski
This prayer to St. Anthony is said to have “never been know...
Cerith Gardiner
5 Ways grandparents impact our lives for the better
Sarah Robsdottir
What we can learn from Elon Musk’s housing decisions
See More
Get Aleteia delivered to your inbox. Subscribe here.