Independent origins of spicules reconcile paleontological and molecular evidence of sponge evolutionary history Sponges have a cryptic Ediacaran history because ancestral sponges were soft-bodied and had low fossilization potential.

A new exciting paper on #sponge #evolution! Our results suggest that early sponges did not have #spicules and that both biosilicification and biocalcification evolved independently multiple times 🤯
www.science.org/doi/full/10....

A stunning close-up image of the Sun, captured in Hydrogen Alpha light and color-inverted. The image reveals intricate details: numerous sunspots, active regions, bright spicules covering much of the surface, filaments (prominences on the Sun's face), and prominences extending from the edge. Limb darkening is clearly visible. This unusually active Sun showcases the increasing solar activity leading up to the solar maximum. A small inset shows the relative size of Earth compared to the Sun.

Astronomy Picture from 22/02/2023

Our Increasingly Active Sun

Source: https://apod.nasa.gov/apod/ap230222.html


#SolarActivity #Sunspots #HydrogenAlpha #SpaceWeather #SolarMaximum #Astronomy #Astrophysics #Space #Sun #SolarProminences #Filaments #Spicules #LimbDarkening #OurSun

A stunning close-up image of the Sun, captured in Hydrogen Alpha light and false-colored. The image showcases a large sunspot group (AR 1339), numerous spicules covering the surface, prominent limb darkening, and several spectacular prominences extending beyond the solar limb. This detailed view reveals the dynamic and complex nature of our Sun's activity as it approaches solar maximum.

Astronomy Picture from 15/11/2011

Orange Sun Scintillating

Source: https://apod.nasa.gov/apod/ap111115.html


#SolarActivity #Sunspots #AR1339 #HydrogenAlpha #SolarMaximum #SpaceWeather #Astronomy #Astrophysics #SunImage #SolarProminences #SpaceScience #OurSun #LimbDarkening #Spicules