Two new renders of my "Red Worlds" series: As the name suggests, I portray planets orbiting red dwarfs here. Due to this limitation, the images sometimes show certain similarities, which at first sight seem "boring" when looking at them. I try to counter this with detailed representations.
A real solar system at a distance of 12.5 light years in the constellation Aries. At least 2 planets orbit a faint, small red dwarf.
The system is with about 8 billion years much older than our solar system.
For those interested and curious:
https://en.wikipedia.org/wiki/Teegarden%27s_Starhttps://en.wikipedia.org/wiki/Teegarden%27s_Star_bhttps://en.wikipedia.org/wiki/Teegarden%27s_Star_chttps://www.aanda.org/articles/aa/pdf/2019/07/aa35460-19.pdfFacts:
The planets b and c both move in the habitable zone and receive slightly more (b: 115%) and significantly less (c: 37%) radiation from their faint parent star, mainly infrared radiation. Due to the lack of visible light, the surface of both planets is bathed in a dim yellow-reddish twilight. similar to just after sunset on Earth. However, the bright disk of the parent star is considerably larger as seen from both planets than the Sun is from Earth (b: 4.5x, c: 2.5x). You can look into it, but it quickly becomes uncomfortable. If both planets have an atmosphere, water and/or ice could also be present. Both planets are most likely in bound rotation, that means they always show the same side to their parent star, like the moon to the earth.The sun is always at the same place in the sky. There is no "day" and no "night", only a day side and a night side. This is not favorable for the development of life, but it is not impossible.
Speculations:
I assume that the atmospheres and the water of the two planets have already thinned out considerably after 8 billion years, not least due to the radiation of the nearby parent star. There is hardly any cloud formation anymore. Tectonic activity has practically ceased and most of the mountains have been eroded over time by wind and water. On planet b the little water of the dayside is still present in the form of many small shallow ponds. Planet c probably has more water, but is already partially iced over. In the shallow ponds of planet b and the ice-free zones of planet c there may still be lower forms of life: local bacteria, algae and fungi. Should the two planets once have harbored higher life, it has probably already become extinct within the last 8 billion years.
Of course, everything can also be completely different....
To the attention:
In the renders the size proportions of the solar disk and the planets visible in the sky (b from c and c from b) are correct in relation to the image area.
