Saturday, 31 January 2026

Giant Cell

There is a giant single cell life form that lives at the bottom of the ocean called a Xenophyophorea. They are so big that they can be picked up by hand. They use sediments in the ocean to build their shells known as tests. They live by gathering small particles of other life forms like algi the drift down from the ocean above them. 
Some of these single celled life forms can reach the size of 20cm across, about the size of a football. Although they are one cell they usually have more than one nucleus. 

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Monday, 26 January 2026

Black holes

It is believed that all objects with mass can become black holes as long as their radius is reduced to a certain size, even individual particles can become black holes. In a book written by professor Brian Cox it pointed out that if the Earth were compressed into the size of a pepple, a few centimetres across, it would be a black hole. 
The same book pointed out that gravity is the weakest force, a small magnet can pull a metal object away from the Earth, but it has no limits, it keeps increasing with mass and can be focused into a small space and cause a sphere around itself with an escape velocity that is higher than the speed of light. In other words, even light can't escape the gravity of a black hole if it gets too close. They call the space where light can't escape the event horizon. 

Saturday, 24 January 2026

Movie Facts

In the book that the movie 'The thing 1982' is based on titled  'who goes there' by John Campbell. There are some key attributes of the alien creature that was not revealed in the movie. 

Firstly, the organism doesn't need to eat or breathe because it can harness cold fusion in its cells, they split water molecules and merge the two hydrogen atoms together to make helium and lots of energy.  

Secondly, Dr Blair believed it has a default form and was likely artificially created to spread an alien civilization around the universe. When they found the creature it had three red eyes and tendrils in its head and Dr Blair came to the conclusion that when it had finish assimilating all the life forms it would return to its default form, unless it needed adaptations to survive. 


Thirdly, the creature is telepathic and as it thawed out in the book, it would mess with the minds of the crew and it knew what they were all going to do. They couldn't hide anything from it. 


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Monday, 19 January 2026

James Webb's New Friend

When they Launched the James Webb Space telescope it had a priority problem. It can only look at a very tiny fraction of the sky at a time and it is difficult to choose what places are more important than others. 

For this reason they sent up the Pandora Space Telescope, it will mostly look at stars when one of their planets transitions between the star and us. The probe will try to separate  the light from the planets atmosphere and the star and detect if there is something interesting there like clouds or oxygen. If the probe finds something interesting then the James Webb space telescope will take over and have a closer look.
The pandora probe is very small, about the size of a washing machine and the rocket bay that took it up had extra space so they added two other small cube satellites, sparks and balckcat, they're about the size of a serial box and would fit in a shopping bag. 


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Sunday, 11 January 2026

What Trees Are Made of

Almost all of a tree's mass comes from the air. The tree will take carbon dioxide from the air and water; it will use solar energy to split the water molecules and combine them to the carbon atoms freed from the carbon dioxide and release the oxygen as a waste product. 
The root of a tree doesn't use anything in the soil except some nitrate compounds but they are almost nothing. Using air water and sunlight, a tree self assembles into a giant wooden structure that towers over all the animals. 

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