Carl Sagan

60 Years Later, is it Time to Update the Drake Equation?

On the 60th anniversary of the famous Drake Equation, a new study considers whether or not it is still of…

5 months ago

How Much Life Would Be Required to Create the Phosphine Signal on Venus?

A Biosignature Last week, an incredible announcement was made about the search for extraterrestrial life: Phosphine gas detected in the…

1 year ago

Beyond “Fermi’s Paradox” IX: What is the Brief Window Hypothesis?

In this latest installment in our Fermi series, we take a look at the possibility that advanced civilizations only have…

1 year ago

Beyond “Fermi’s Paradox” III: What is the Great Filter?

In 1996, economist/futurist Robin Hanson proposed a possible resolution to the Fermi Paradox: there's a "Great Filter" that prevents intelligent…

1 year ago

Could There Be Life in the Cloudtops of Venus?

A new study by a team of international researchers shows how microbial life could exist in Venus' cloud tops, an…

4 years ago

New Horizons Just Took a Record Breaking Image. No Camera Has Ever Taken a Picture From This Far From Earth

This past December, the New Horizons probe took a series of pictures from the Kuiper Belt, thus breaking the record…

4 years ago

Carl Sagan’s Crazy Idea: Life Inside A Comet?

Space Habitat designs are enormous, high-tech structures. Carl Sagan had a different idea: comets as space habitats.

5 years ago

Where Are All The Alien Robots?

As you know, I’m obsessed about the Fermi Paradox. Where are all the aliens? But an even stranger question is:…

5 years ago

Beyond “Fermi’s Paradox” II: Questioning the Hart-Tipler Conjecture

Welcome back to our Fermi Paradox series, where we take a look at possible resolutions to Enrico Fermi's famous question,…

7 years ago

25 Years Since Voyager’s ‘Pale Blue Dot’ Images

A quarter of a century has passed since NASA’s Voyager 1 spacecraft snapped the iconic image of Earth known as…

7 years ago