Astrobiology3- Page

Early Earth — Grok via Astrobiology.com The unambiguous detection of biosignatures in exoplanet atmospheres is a primary objective for astrobiologists and exoplanet astronomers. The primary methodology is the observation of

Shifting distributions of genera within functional groups and their phylogenetic underpinnings among the end-Cretaceous, survival pool, and Recent biotas. (A) Changes in absolute richness of genera within functional groups between

Diatoms – JOIDES Resolution Trees get most of the love, but diatoms, a group of photosynthetic microalgae, produce 20% of Earth’s oxygen and are the foundation of aquatic food webs.

Example of spoken English exhibiting dense spectral energy across a wide frequency range, reflecting typical characteristics of natural speech. — astro-ph.IM We present an exploratory framework to test whether noise-like

Comparison between the database EHS masses with recomputed values adopting the database stellar radii and surface gravities (see text for details). The grey dotted line is the (1:1)-relation. If the

Carbon-I (a) optical ray trace and (b) the proposed structural design. — physics.optics The proposed Carbon Investigation (Carbon-I) Imaging Spectrometer is designed to measure variations of greenhouse gases in Earth’s

Estimated total mass of transiting compact systems, Mtot, scaled to the stellar mass, M∗. a, (Mtot/M∗) for compact systems having ≥ 3 known planets that orbit a single star within

Total O3 abundances for models with high N2O (left) and low N2O (right) normalized to models with modern levels of N2O from Kozakis et al. (2022). Overall the high N2O

Examples of spectral synthesis used in this work. The black dots are the observed spectra and the red lines are the theoretical spectra. From right to left, the gray areas

Artist’s view of the Kepler-725 system. The small planet in the lower right is the newly discovered super-Earth in the habitable zone. (Image by GU Shenghong) “Are we alone?” This