Showing posts with label proxima. Show all posts
Showing posts with label proxima. Show all posts

Wednesday, 2 February 2022

Proxima Centauri Thoughts

When I was younger, I bought myself a telescope. The first thing I looked at when I bought my Telescope was the moon because it is the closest natural object to Earth. When they launched the James Webb telescope, I thought they would do the same and Look at the nearest stars to us. I was wrong. They seem more interested in distant nebulas and early galaxies; fair enough, I'm not an astrophysicist anyway, let them get on with it. 
The closest star to our Sun is Proxima Centauri, it is one of three stars that are all orbiting a common center of gravity. Proxima Centauri is a Red dwarf star and is very small and dim compared to the sun. We know it has some rocky Earth like planets going around it but we don't know very much else.  The two other stars are Alpha Centauri A, a sun like Yellow dwarf star and Alpa Centauri B, a smaller Orange dwarf star that is half as bright as the Sun. If you look the Alpha Centauri stars without a telescope, they look like one star. 

Even though they are the closest stars to us, the distance between them and us is immense. It takes light 4.2 years to go from the sun to Proxima Centauri.  It takes less than a day for light to go from the sun to the voyager 1 probe, the most distant man made object in space (16 hours). The nearest stars to our sun are more than 5,000 times further away than our most distant probe that has been speeding away from the Earth for decades. It is hard to even imagine that distance, and they are just the nearest stars. 


Tuesday, 7 December 2021

Nearest Star

The Wikipedia online encyclopedia is my favourite website at the moment. It is a free to use service, I think they should try and sell merchandise to keep their funding secure. I have learnt a lot from it over the years. I was reading about the 'Alpha Centauri' star system. They are 3 stars that are all orbiting their common center of gravity, they are the closest stars to us, they are like a family. The Alpha Centauri star that is closest to us is called 'Proxima Centauri'. The two Centauri stars that are further away 'Centauri A' and 'Centauri B' are much bigger than Proxima Centauri. 

Proxima Centauri is a red dwarf star and the star that is closest to us. It is the smallest star in the Centauri 3 star system. It is so dim that you need a telepscope to see it, even though it is the nearest star to us. 

When I read things like that, I get many thoughts in my head. If a star is so dim that a planet has to be  tidally locked to have a warm climate then what about planets that are much better a trapping heat. What would a Venus like planet be like orbiting Proxima? I thought that if a planet can trap more heat than it realeases then it could still be further away. 

What do you think of Proxima Centauri and it's two companion stars? This is the article... Proxima Centauri

Blog Archive

Charlie Kirk Assassinated

I learnt last night at about 2am that Charlie Kirk was assassinated by a lone sniper purched on a rooftop. I felt a deep sadness for his dea...