Goldilocks and the Three Planets

Hi all. It’s been a while I’m ashamed to admit. I’ve been working on a new Facebook group to raise the profile of my channel. It’s been fun. Here is the link (hint: join the group!)
Here is my newest video. A basic breakdown of what exactly the Goldilocks (or circumstellar habitable) zone is, and it’s importance to life on Earth. If you like the channel please subscribe!

I’ve also provided the script/transcript for my upcoming episode of “Astro-Biological:”, which introduces us to the concept of the Goldilocks Zone….

G’day! Welcome to Astro-biological:!

Porridge!

Life.

Porridge!

Life!

Ben what the heck are you talking about? What’s the connection?

 Let’s go check out THE GOLDILOCKS ZONE!!!!

INTRO BIT

Life, as I like to remind you, is really special. Here on earth, life exists only because certain conditions are met. Today, we’ll consider water. Everything needs it, but it only exists as a liquid at the surface here on Earth. 

So? Big deal right?

Well it is actually!

Check out the sun. Giver of life! Driver of climate! Pumping out some pretty respectable energy. How much?

384.6 yottawatts.

Yotta whatta?

1 yottawatt equals 10 with 26 zeroes after it!

Brutal! And the sun is a pretty average star! Nothing special about it!So there’s plenty of sunlight for everyone!

Could other planets benefit from the sun’s golden goodness the way we do? Let’s take a look at the inner planets. They’re the only ones that really matter in all this…

Let’s see…Mercury, Venus, Earth and Mars. The rocky planets. The so called “Terrestrial Planets”. 

Mercury is 58 million kilometres from the sun. That’s really close. This close proximity has turned Mercury’s surface into an oven, where liquid water couldn’t possibly last.

Let’s visit the next in line: Venus. Venus is similar to Earth in composition, gravity and size. Long ago Venus might have had oceans just like Earth, but again the planets closeness to the sun and other factors saw all that water disappear into space. Venus is now the hottest place in the solar system. Definitely no liquid water there anymore!

Wanna know more about what happened to Earth’s twin? This guy I know made a video! 

Earth! Beautiful Earth. Our home. Every thing’s home actually. Eighty per cent of earth’s surface is covered by liquid water. There’s so much spare water here that our bodies are mostly made up of it! It’s absolutely everywhere, even locked up deep in the earth’s crust! Enough of earth. We’ve all been there.

Next planet out:

Mars. The cool planet. Every one wants to go here. Pity it’s so cold! Liquid water may exist here in tiny amounts, but most of the red planet’s water is locked up as ice or permafrost just below it’s surface. Plenty there for future colonists to use, but nothing readily available for biological processes. Pity. It’s a beautiful planet. Just ask Matt Damon!

So what is the Goldilocks Zone then?

Here’s the inner solar system. Mercury, Venus,  Earth and Mars. Let’s visit a special guest who can explain the Goldilocks Zone for us…

Chef Ben bit. (Watch the video when it’s up!)

Nice work Chef! So, if Earth was a bowl of porridge it would be the one Goldilocks ate: the one that was just right! it’s that simple! Earth is lucky enough to be at the perfect distance from the sun, where water likes to slosh around in liquid form. Things would be a lot different here if that wasn’t the case. 

So that’s it for now! A simple but important piece of information. The Goldilocks Zone!

How am I going so far?

If you thought I was alright, then subscribe for more. If you thought this video was useful to you, then give it a like! Likes help this channel get noticed. That little notifications bell is just the thing if you want to see more. Go on. You know you want to.

Thanks for watching astrobiological. Giving you the universe in plain human. Ciao!

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