Astrobiology14- Page

Graphical abstract — The Innovation The traditional definition of the circumstellar habitable zone (HZ) focuses on liquid water, but neglects the crucial role of ultraviolet (UV) radiation in prebiotic chemistry.

Protocell formation on a scoriaceous micrometeorite. A scanning electron microscope image section of the micrometeorite (left), fluorescence microscope micrograph of protocells on the surface of the micrometeorite (right). Phospholipid membranes

The green-to-red intensity ratio of (G/R) in 3I (filled circle), compared with measurements for a sample of Solar System comets: Jupiter-family comets (JFCs; open triangles), Oort Cloud comets

Photograph of the model hot spring pools system showing the assembled pools with temperature probes placed in the cups and heating pads inserted underneath for controlling temperature. Power supply provides

Transit spectrum of K2-18 b based on the detection with Kepler (Montet et al. 2015) and characterisation with HST/WFC (Benneke et al. 2017), Spitzer (Benneke et al. 2019), JWST/NIRISS &/NIRSpec

A region in Ursa Major with maps of individual simulation components and their sum; these have been evaluated for a spectral channel centered on 0.803 µm. The color schemes vary

iss057e000185 (10/8/2018) – Biomolecule Sequencer for the BEST experiment floating in front of Window 7 in the Cupola module. Earth is in the background. The

Upper Panels. Maps of N×ρ for CO, CO2, CH4, CH3OH, and H2O. The white arrow shows the projected direction of the Sun. Lower. Maps of molecular rotational temperatures. — astro-ph.EP

Influence factors of the space environment on microalgae. Cyanobacteria and eukaryotic microalgae (collectively referred to here as ‘microalgae’) represent early-evolving oxygenic phototrophs and are widely considered ideal candidates for bioregenerative