One Finite Planet

A Timeline of Our Solar System.

I feel this a useful reference. It is just collation of data from a variety of resources, as in the table below, and then mapped onto one year, to give perspective of ‘how long through the year’ various events are.

The timeline is based on the life of the Sun from formation through the inevitable ‘red giant’ phase when the Sun will expand to either engulf, or almost engulf the Earth. The ‘green’ section indicates the short time during the ‘life’ of the solar system that the Earth can support ‘life as we know it’ on land. The orange section is the time before the atmosphere could support life on land, and the red section represents the time when CO2 levels can no longer support plant life, and the earth is set to become like Venus. On the one year time line, we need to find another home by tomorrow, and that is without climate change or any problems created by people.

Key Timeline Observations & Discussion Points.

  • Life On Earth Began Early and without oxygen.
  • It took around half the time there has been life, to evolve to, but Evolution started slowly.
  • The Brief Burst of Life on Land.
  • Cyanobacteria: The first photosynthesis.
  • Thermal Runaway.

First On Earth Began Early: But Evolution started slowly.

Life began within 500 million years, which may sound like a long time, but considering the Earth was formed as a result of a sequence of collisions, and would have taken time to become even close to stable. Life had to form in the oceans given that land was inhabitable at the time, and we have evidence of life going back as far as we have evidence of oceans.

Given how quickly life arose, it seems surprising that it took another 2 billion years to single celled organisms, and 3 billion years to get to multicellular organisms. For 3/4 of the time there has been life, all life was single cell life, and there were no animals at all. Evolution was slow to get started!

The Brief Burst of Life on Land.

On the ‘annual calendar’ life on land provides only three weeks to live on land. Life on land becomes possible in early June, and ends before the month is over. This is become by the time the plants have transformed that atmosphere to have enough Oxygen to form ozone to block deadly radiation reaching the Earths surface, the CO2 supply is running low. Plants keep compensating for the ever increasing heat from the Sun by consuming CO2 and reducing greenhouse gas during the first half of the life of the solar system, but once CO2 levels are two low for plants to continue, all life will end as the planet enters thermal runaway, unless the Earth finds a new solution to controlling the temperature for the second half. The Earth will join Venus as a planet with temperatures beyond the temperature where water boils.

The Earth will have supported life on land for less than 1/20th of the life of the solar system.

Cyanobacteria: The first photosynthesis.

The current building block of life, photosynthesis, was not even present during the first billion years of life, and green plants were not present during the first 3 billion years, evolving only 1 billion years ago.

Thermal Runaway.

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You may have heard of the ‘goldilocks zone‘. The distance from a star that is ‘not too hot’ and ‘not too cold’. The Earth is now at the very edge of that zone, as the zone continues to move away from the sun and will soon encounter thermal runaway, where temperature increases add more water vapour to the atmosphere. Since water vapour is a greenhouse gas, the Earth then heats further, adding more water vapour as a result. The end result: Earth will become another Venus with temperatures rapidly soaring beyond those where life is possible.

Given the rapid pace of technological advancement, 25 million years should be more than enough time to find a solution, but in geological time 25 million years is not that long. All things considered, humans only just managed to evolve in time!

Years Relative to NowdateSource
Sun Formed-4,600,000,0001/01/2020Discover Magazine
Earth Formed-4,500,000,0004/01/2020Discover Magazine
First Life-4,000,000,00023/01/2020Livescience
Cyanobacteria-2,700,000,00013/03/2020Scientific American
o2 – Oxygen-2,400,000,00024/03/2020Great Oxygen Event
Eukaryotic (modern) cells -2,000,000,0008/04/2020New Scientist
Algae-1,200,000,0009/05/2020Scientific American
First Animals-800,000,00024/05/2020Natural History
Plant Life On Land-470,000,0006/06/2020New Scientist
First Insects-406,000,0008/06/2020AAAS.org
First Dinosaurs-231,000,00015/06/2020BBC Science Focus
First Mammals-160,000,00017/06/2020Livescience
Humans-500,00023/06/2020Discover Magazine
Civilization-10,00023/06/2020
now023/06/2020
Thermal runaway25,000,00024/06/2020
Sun Is A Red Giant5,000,000,00031/12/2020

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Table of Contents

Categories

Carbon Capture and Storage: When it works, and why it doesn’t for work ‘blue hydrogen’.

There are both vocal supporters and vocal opponents of carbon capture and storage, and there are arguments for both sides. This page goes beyond reporting on how carbon capture and storage fails to make current ‘blue hydrogen’ projects sustainable, and looks at the underlying principle that dictates why carbon capture and storage, despite having genuine valuable applications, can never enable ‘blue hydrogen’ to be environmentally sustainable, but is so popular politically.

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The ‘Blook’: An Evolution of a book.

Think of the process of writing a book, while sharing all the research and steps of finding, researching and collating material, as the book gradually takes shape online as the work progresses.

But does the work ever end, or is there always progress towards the next edition?

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WordPress.com to the Next Level: Plugins, Elementor, CoBlocks?

Something completely different. A discussion on how this site is hosted: on wordpress.com.

Anyone who has started a “blog” or other site on wordpress.com, may get to wonder, what are the options for upgrading the website? What is the value of the free, personal or premium plans and beyond? What real world benefits are there, and, alternatively, what would you lose and/or gain from moving away from wordpress.com. This is a page discussing being in that situation. If you are not considering having a website, it may be of little interest.

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Making Animated GIFs: Solving colour problems.

This is part of series of pages I will be adding on things I have learnt as part of building this website, and I will soon try and enable following by topic (when I get this page working), so people can separately select notification on building websites and/or population or other issues, without being notified of things outside their interest. Standby for that update.

Meanwhile this page provides general help on making an animated GIF for a series of images, specific help on a challenge with animated GIFs, and a list of sites with free images as a resource for those building images.

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