Archive for the 'Alien life' Category

First Contact Scenarios – Confusion

Imagine that an intelligent alien species has discovered us, and that they have the ability to journey to Earth to make first contact.

It may sound like a fantastical scenario better suited to fiction than to science, and for more than two centuries this has largely been the case, but over the last few years a number of scientists have begun to debate first contact scenarios, both in scholarly domains and in the mass media.

What do you think first contact would be like?

I’ve had a few ideas of my own, inspired heavily by sci-fi I admit, and in previous posts I’ve looked at scenarios in which the aliens may not even be interested in us, or that they may make first contact with us, but covertly. In this post I’ll look at the idea that they do try to make an overt first contact, but that we may have a mutual problem in understanding each other.

Continue reading ‘First Contact Scenarios – Confusion’

First Contact Scenarios – Espionage

Imagine that intelligent alien life exists, that its discovered humanity, and that it has the technology to reach us. What would first contact between humanity and aliens be like?

In the first post in this series I looked at the idea that advanced alien civilisations might be totally indifferent to our existence and would simply choose to ignore us.

In the other scenarios in this series I’ll assume that they are interested in us, and in this post, that they arrive on Earth, but in a rather covert fashion.

Continue reading ‘First Contact Scenarios – Espionage’

Goldilocks, and other Habitable Zones for Life

Heard of the Goldilocks zone?

It’s the idea that an area of space around a star will be at the right temperature for life to exist. Not too hot, not too cold, hence Goldilocks.

It’s a bit like standing around a campfire on a very cold night. Stand too far away and you freeze, stand too close and you catch on fire and burn to death.

It’s the same with planets orbiting stars too, if they’re too far away then water freezes and life can’t emerge, and if they orbit too close the planet is roasting hot and nothing can live.

It gets a bit more complex than this though, but complex in a fun way. Oh and its also got some pretty big implications for the search for extraterrestrial life…

Continue reading ‘Goldilocks, and other Habitable Zones for Life’

First Contact Scenarios – Indifference

I’m planning on writing a series of posts on different scenarios for first contact with intelligent alien life. I’ve been inspired by some insightful comments from this post and have taken lots of my ideas from those who commented there. Thanks everyone who commented.

It’s feels as though this topic has been treated as a fanciful distraction by much of the serious scientific community until quite recently, and has very much been delegated to science fiction authors, fringe scientists and assorted lunatics. But as of late some big-name scientists have joined in the fun, and this topic is gaining an air of credibility. This isn’t to say that science fiction hasn’t made contributions to this field; I think Sci-Fi has provided some intelligent and very creative first contact scenarios and much of what I’ll be writing has been inspired or explored by Sci-Fi.

So lets assume that intelligent alien life exists, that its discovered humanity, and that it has the technology to communicate with us, either face-to-face or using an alternative method.

The first of my proposed scenarios is that the aliens will be totally indifferent.

Continue reading ‘First Contact Scenarios – Indifference’

Life in our Solar System – Mars

In this series of posts I’ve looked at planetary bodies in our Solar System that could support life, from the moons of Saturn and Jupiter, to the cloud layers of Jupiter itself, to the ephemeral-once-jungles of Venus, I’ve even looked at Earth itself.

Now one of my favourites, Mars, the Red Planet.

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Life in our Solar System – Earth

In previous posts I’ve looked at some likely, and some less likely, candidates for planets or moons in our solar system that could harbour life, including Jupiter, three of it’s moons, two of Saturn’s moons, and Mars and Venus.

Now its time for Earth. Yep, you read right.

In 1990 NASA used the Galileo spacecraft to look for life on Earth. Why bother you scream, whilst hurling your cup of tea violently against the wall? Well, NASA did it to test how well spacecraft like Galileo can find life on planets and moons from space. Call it a proof of concept, if NASA can find life on Earth, then at least they know the tech works, and hopefully won’t miss signs of life on other planets.

Here’s what they found on Earth:

Continue reading ‘Life in our Solar System – Earth’

Life in our Solar System – Venus

In previous posts I’ve looked at the possibility that alien life could be found in our solar system, on three of Jupiter’s moons, in Jupiter itself, and on two of Saturn’s moons.

This time we’re moving nearer to home, to the planet closest to our own, Venus, the second rock from the Sun.

Continue reading ‘Life in our Solar System – Venus’


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