Life Part 4/4 - The story of energy supply.
Life is an active process. From the very beginning, energy was needed to make molecules and a little later to allow cells to multiply. Life has been creative...
Recent Posts
Life Part 3/4 - Pivotal points in the evolution of life.
One tipping point follows another. It is a house of cards, one failure causes the entire system to collapse. We go over the so-called geological times determ...
Life Part 2/4 - The very beginning.
They haven’t figured it out yet. But 3.5 billion years ago, organic molecules grouped into a primitive cell, a unit that can reproduce itself. That’s how it ...
Life Part 1/4 - Overview of the origin of life.
Life on earth originated 3.5 billion years ago. It will take almost 3 billion years for those single-celled organisms with a primitive cell structure to evol...
Reflection Part 2/2 - The fate of our Earth.
In a short time there may not be a problem. We will have to step up our efforts to keep the climate under control, for example. But in the long run, it doesn...
Reflection Part 1/2 - The fable of time travel.
The late Stephen Hawking (1942°-2018+) came to the conclusion that time travel is possible, but for the time being only in theory. And yet it doesn’t let any...
Second update 3/3 - What is the status of the Mars Sample Return mission?
In the meantime, we are only a year further. A lot has already happened there on Mars. A second update is required, we write at the end of December 2022.
Second update 2/3 - What is the situation with the helicopter on Mars?
In the meantime, we are only a year further. A lot has already happened there on Mars. A second update is required, we write at the end of December 2022.
Second update 1/3 - What is the status of sampling on Mars?
In the meantime, we are only a year further. A lot has already happened there on Mars. A second update is required, we write at the end of December 2022.
Earth Part 4/4 - Life on earth, unique in the universe?
The key question: “Are we alone in the universe?” still deserves an answer in my lifetime. I feel that a ballast would fall off my shoulders. To ease the pai...
Earth Part 3/4 - Will there be a planet B?
The most pessimistic probability calculation tells us that there are numerous candidates. Two criteria are used: Can we go there and is it habitable? Especia...
Earth Part 2/4 - Could our solar system have been better?
Everything depends on coincidences. We do not know any better and we must accept it. Objectively speaking, improvements are possible.
Earth Part 1/4 - Have we been lucky with our earth?
There’s a lot to say about it. Enjoy this bundling, for better or for worse.
Update Mars Part 4/4 - The moon Enceladus is also quite interesting.
Enceladus is one of the 82 moons of Saturn. Here, too, geysers have been observed and science is eager to investigate them further.
Update Mars Part 3/4 - The moon Europe is also quite interesting.
Europe is the smallest of Jupiter’s Galilean moons. These are the four large moons of this gas giant. This moon also deserves our attention. A planet or a mo...
Update Mars Part 2/4 - What is the next milestone in the search for extraterrestrial life?
We look to the near future and bring Dragonfly to the attention.
Update Mars Part 1/4 - What is the status of the experiments on Mars?
We are now a year further. A lot has already happened there on Mars. An update is required, we will write at the end of December 2021.
Stonehenge Part 8/8 - Graves.
That Stoneheng has served as a cemetery for many centuries is certain. The numerous burial mounds prove it. They are all empty, there has been too much time ...
Stonehenge Part 7/8 - Overall picture.
The survey map shows so many archaeological sites that it is inevitable that Stonehenge is part of a whole. The fact that Stonehenge itself stands out is due...
Stonehenge Part 6/8 - Transport and processing.
The transport of these enormous stones continues to appeal to the imagination. People try to understand it and imitate it (at least in a few hundred meters) ...
Stonehenge Part 5/8 - People.
The plain of Salisbury has always had a special attraction for humans and animals. Old inhabitants from the west of the island came into contact here with ne...
Stonehenge Part 4/8 - Functions.
The purpose of Stonehenge is fairly clear these days. There will always be supporters and opponents of any option. The most acceptable proposition is that fu...
Stonehenge Part 3/8 - Special stones.
The remaining stones have all been given a number, the boreholes of the missing stones have been localised but not included in the numbering. We pick out a f...
Stonehenge Part 2/8 - Construction.
Stonehenge was built in several phases which together spanned at least 1,500 years. Man was already active in the area before the start of the work and remai...
Stonehenge Part 1/8 - The One and Only.
Stonehenge is older and more imposing than any other stone circle in Britain. Moreover, the construction is extremely sophisticated, no comparison can be mad...
Mars Part 4/4 - The significance of Mars.
Mars is smaller and further from the sun, what can we imagine and what can the red planet mean for humanity?
Mars Part 3/4 - An unexpected and early final word.
We must not lose sight of reality, it is an extremely difficult task.
Mars Part 2/4 - A fantasized prediction.
Everyone is eagerly awaiting when Perseverance will come up with proofs of past life on Mars. Allow me to anticipate it for a moment.
Mars Part 1/4 - Interest in Mars.
Mars will be in the spotlight in February 2021. When this article appears, a new rover has landed on the red planet. The robot said: “Hello, world. My first ...
Avebury Part 6/6 - White horses and crop circles.
In Wiltshire, these two phenomena capture the imagination. There is something to be told about it, but the story is not entirely conclusive.
Avebury Part 5/6 - The Silbury Hill, a separate story.
This limestone hill is an enigmatic eye-catcher and therefore deserves a separate story.
Avebury Part 4/6 - The Site, other details.
Here are the details of the entire Avebury Site.
Avebury Part 3/6 - The Stone Circle, many details.
In this section we go into more detail about the Avebury Stone Circle.
Avebury Part 2/6 - The Stone Circle, in a nutshell.
In this article I paint a general picture of the Avebury Stone Circle.
Avebury Part 1/6 - How did it come to this?
I would like to explain my travelogue of my various trips to Avebury. These blog posts will consist of six parts. I hope you like it.