torsdag 24 september 2026

Fungi & Night Sky

A clear evening in the woods behind my house. Simply walking around looking for beautiful little objects is a pleasure. It is now mushroom season, and many of them fluoresce under UV light. These fungi are vital, acting as nature’s cleanup crew by breaking down dead wood and leaves, thereby returning nutrients to the soil.
What we pick and call a "mushroom" is merely the fruiting body. Beneath the ground lies a vast, intricate network of fungal threads known as mycelium. It is through this mycelium that the fungus absorbs water and nutrients from the soil.
Symbiosis with trees (Mycorrhiza): Many of our most common edible mushrooms live in symbiosis with forest trees. Through underground contact, they exchange services: the fungus provides the tree with water and minerals, while the tree supplies the fungus with sugars (carbohydrates) produced via photosynthesis.
The soil's kidneys: Fungi are extremely efficient at absorbing substances from the soil. Unfortunately, this means they can also take up and store environmental toxins, heavy metals, and radioactive substances (such as cesium) if they grow in contaminated soil.
Visible in the starry sky are the constellations Perseus, Cassiopeia, and Auriga.





 

lördag 19 september 2026

onsdag 16 september 2026

The chromosphere of the sun - high res photo.

The chromosphere is the thin middle layer of the Sun's atmosphere, located just above the visible surface (photosphere) and below the outer atmosphere (corona). It comes from the Greek word chroma, meaning color, because it shines with a bright red glow during total solar eclipses. The red color comes from glowing hydrogen gas, specifically the hydrogen-alpha (H-alpha) light wavelength. It extends roughly 2,000 to 4,000 kilometers (about 1,200 to 2,500 miles) above the solar surface. Unlike inner layers, it gets hotter as you move outward, rising from about 4,000 K near the bottom to 10,000 K (or higher) at the top. Possible to see/photograph: Spicules: Narrow, grass-like jets of plasma that shoot upwards from the bottom layer before falling back down.

Prominences and filaments: Huge, cool loops and clouds of gas held above the surface by magnetic fields. Visibility: It is normally hidden by the blinding brightness of the photosphere below, but it is visible during total solar eclipses or through special solar filters.

Photo taken with several photos stitched together as a high res photo of the sun.