Astrobiology5- Page

Earth and Mars — NASA.gov The Milankovitch cycles of Earth result from gravitational interactions with other bodies in the Solar System. These interactions lead to slow changes in the orbit

Illustration of the workflow for the construction of coupled interior-atmosphere models with ATHENAIA. For each composition, atmosphere models are calculated with SCARLET (top left) and interior models following the model

An example of a simulated spectrum for a Proterozoic Earth–like planet, in which no single feature dominates but absorption from numerous molecules is visible, including O2 and O3. The N2O

(d) Cryo-ET slice through a cell body of early-log phase Ca. Y. umbracryptum with multiple intracellular vesicles. Scale bar: 100 nm. (e) Semantic segmentation of the tomogram shown in panel

Absorption cross-section per molecule extracted from the ExoMol database. For this plot, we set the temperature to 2800 K and pressure to 7.7 kPa as thermal and pressure broadening parameters.

A team of Japanese and US scientists have discovered the bio-essential sugars ribose and glucose in samples of asteroid Bennu that were collected by NASA’s OSIRIS-REx mission. This finding builds

When haze built up in the atmosphere of Archean Earth, the young planet might have looked like this artist’s interpretation – a pale orange dot. Credits: NASA’s Goddard Space Flight