Yes, there is life out there, but there are infinitely more planets than there are grains of sand in the Sahara desert.
Imagine there was life on two or three of those grains of sand, what would be the chances of them ever finding each other?
Also what are the chances of 2 grains of sand being exactly the same? To support life a planet needs to more or less exactly the same as Earth.
That's such a human-centric way of thinking and is associated with the Abrahamic religion's viewpoint that the world (and everything else) was created for mankind. This we know is utter nonsense, as the universe is over 12 billion years old and we've (humans) only been here for a fraction of that.
If there's a nuclear war on earth involving every nuclear weapon (or some other catastrophic event for human life on earth such as a pandemic, climate change, asteroid collision, etc.), we'd be able to create a world that wouldn't sustain human life. Life on earth would continue though. The most successful life-form, bacteria, would continue to flourish. Other species would evolve and after many millions of years who's to say that another sentient species won't come about?
It's not just a case of having 2 planets the same size. The whole solar system has to have the right components to make the correct ecosystem for producing life.
Correct. But it doesn't have to be the same as earth.
Firstly you need the right type of star in the middle of it, in our case the Sun. You then need a planet to be exactly the right distance from it to maintain the right temperature. You need that planet to just happen to spinning at the right speed to not suck everyone in to the ground or let them float away.
Correct. In the case of the earth, the heat produced from the core has also been an essential element in creating conditions for life to exist here.
You also need supporting planets. In our case we have Jupiter which has such a massive gravitational pull it sucks away all the nasty space debris that would otherwise smash in to us and turn us all in to kebabs.
That's actually nonsense. We have been struck by 'debris' - and it will happen again. The probability of a large asteroid hitting the earth is almost 1.
There's loads more things that are essential. There's probably plenty of planets that have some of the factors but chances are they all have at least one missing and that means they can't support life.
Correct.
I know there are a lot of planets out there and statistically there's a good chance that life exists but the chances of us finding it or it finding us are so remote that it's just not going to happen.
The chance that you (any of us that is) were born is statistically improbable. Yet here you are...
If you pick one grain of sand from the Sahara and examine it under a microscope how long do you think it would take to find an exact match? I think you'd be a while.
If I have 14 billion years (and more), I'm sure I'd manage it.
Sorry I'm just a sceptic
I haven't actually gone through from the original link - so I don't know if you're skeptical about that or the fact that there is probably life on other planets somewhere in the universe.
I'll have to find the article, but the existence of life elsewhere in the universe is a statistical probability.
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