Some of this blog's readers would make really scary and really good alien invaders...

Scientists are curious about some strange atmospheric signatures on Titan that could signal exotic life. But it's not quite a slam dunk for alien hunters.

As soothing as it may seem, it's very, very, very unlikely there's a union of various alien species that imposes an interstellar order.

NatGeo gave ancient astronaut theorists the time of day, but did little to rebuke their pseudoscientific arguments in a rare miss.

While we're trying to get aliens' attention with active SETI, we need to keep in mind that we talk to aliens at our own risk.

Convergent evolution is a very real phenomenon, but how likely is it to apply across different worlds?

Nearly half the planet's living things could live deep under the surface, raising fascinating questions about how life got started on Earth and where else it could thrive in our solar system.

Alien hunting is a long, complicated, and arduous process. Pop sci news coverage wants to make it sound fast paced and exciting, even if editors have to sell the same stories again and again.

Mars isn't a hostile desert because its cold and has a barely-there atmosphere. It's because killer UV rays are constantly sterilizing its surface.

While we strive to avoid contaminating alien worlds with our toughest germs, what if it's not only inevitable, but could actually lead to some good over the eons?

Titan is a target for alien hunters looking for exotic life in our own solar system. But kind of organisms could even survive its bizarre environment?

The outer solar system isn't just toxic gas giants and ice. It's full of bizarre oceans with the promise of life and alien chemistry that we didn't think was possible even a few years ago.

The more spread out an alien species is across the cosmos, the easier it would be to find and contact them. But how widespread could an alien civilization be?

When we really think about it, there could be a lot of reasons alien life can't, or doesn't want to, talk to us besides fear, politics, or timelines.

Far from destroying organic molecules, the conditions in deep space seems to foster their creation while protecting them from cosmic rays.