Astrobiology14- Page

ID: ESP_076844_2550 date: 18 December 2022 altitude: 316 km — NASA/JPL-Caltech/University of Arizona Larger image Coordinating with the CaSSIS instrument on the ExoMars Trace Gas Orbiter, we acquired an image

a, (i), Lepidodendron reconstruction; (ii), leaf and leaf scar of Lepidodendron; (iii), Lepidodendron strobile and sporangia; (iv), Lepidodendron sporophyll and sporangia; (v), Lepidodendron sporophyll. b, (i), Tomiostrobus reconstruction, modified after

Genealogical tree of all tRNAs from Bacillus subtilis obtained by nucleotide sequence comparison. For the construction of the tree, see Daniel. At each node of the tree, tRNAs are represented

This image of Venus taken by NASA’s Mariner 10 spacecraft (left) is paired with an artist’s depiction of three possible atmospheres on a recently discovered exoplanet, Gliese 12b. This new

Positions of candidate planets of HD 161098 b and HD 161098 c relative to the HZ of the star. — astro-ph.EP Context. The development of refined instruments and techniques for

Saturn’s moon Titan is a prime destination for investigating prebiotic chemistry beyond Earth, particularly at impact crater sites where transient liquid water may have enabled aqueous reactions between organic molecules.

The same gentle wind that would create small ripples on a lake in Earth (right) would make large waves on Saturn’s largest moon Titan (left). In these renderings, the marker

NASA scientist Mary Beth Wilhelm collects soil samples from Chile’s Atacama Desert. Studying ancient life in the driest places on Earth helps us to understand conditions on Mars. — NASA

Dr. Gerald Soffen — NASA The Gerald A. Soffen Memorial Fund is pleased to announce the Spring 2026 Travel Grant application opportunity for undergraduate and graduate students pursuing studies in