Formation of the cosmic web (San Han) – Inset: A Cubic Millimeter of Mouse Brain (Quorumetrix Studio) – Astrobiology.com Editor’s note: Astrobiology has links to and from everything NASA does.

Artist’s rendition of the space weather around M dwarf TIC 141146667. The torus of ionized gas is sculpted by the star’s magnetic field and rotation, with two pinched, dense clumps

Artist’s impression of four orbiting exoplanets. Intense radiation from the host star may be heating their puffy atmospheres, causing atmospheric escape into space. (Credit: Astrobiology Center) One of the biggest

Maximum likelihood phylogenomic tree of 381 cyanobacterial genomes, including newly sequenced genomes labeled in bold. The tree was inferred from 46,754 unambiguously aligned sites under the best-fit model (LG+F+I+R10) and

A sketch of the proposed scenario. Oxidized planetesimals decay to near 1 au, accreting onto proto-Earth and proto-Venus as well as forming Mars. Some oxidized planetesimals and aubrite-like planetesimals remain

Planets composed of iron, rock, and water. Illustrations not to scale. The planet model on the left-hand side develops a shallow layer of pure water, while the majority of the