Posts Tagged 'Astrobiology'

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’

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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.

Continue reading ‘Life in our Solar System – Mars’

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’

Life in our Solar System – Titan and Enceladus

In a couple of previous posts I looked at the possibility of life existing on some of Jupiter’s moons, including Europa, and then the possibility of life existing on Jupiter itself.

In this post we’ll head further out into the solar system and look at two of Saturn’s moons, Enceladus and Titan.

Continue reading ‘Life in our Solar System – Titan and Enceladus’

What is a Solar System?

I’ve previously mentioned concepts like the Solar System, galaxies and the Universe, but I’ve never properly explained what each of them actually is. I’m sure most people have a vague idea, but probably aren’t 100% sure.

Read on and I’ll explain what a solar system is. Pretty sure you already know? You may be surprised.

Then in future posts I’ll tackle what a galaxy and the Milky Way actually is, and then what the Universe is.

Actually, for the Universe I’ll try my best, but it turns out the Universe is probably a much weirder place than people previously thought.

Continue reading ‘What is a Solar System?’

Life in our Solar System – Jupiter

In a previous post I talked about the possibility of life existing on, or in, some of the moons of Jupiter, with Europa being the best candidate.

But how about life existing within Jupiter itself?

Continue reading ‘Life in our Solar System – Jupiter’


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