The McMurdo Dry Valleys may harbor diverse surface microbial communities, yet little is known about subsurface microorganisms in permafrost and their potential for paleoecological reconstruction.
![Known exoplanets from the NASA Exoplanet Archive in terms of their mass and orbital period. Triangle and circle point markers represent minimum and true masses, respectively. The larger green markers correspond to HD 190360’s three planets. All single-planet systems are made transparent, while all multi-planet systems are connected with a thin black line in order from shortest to longest period. Named period-bins are provided for reference according to rough temperature scales for planets orbiting main sequence FGK stars, and correspond to 0 < P [d] ≤ 1 (ultra-hot), 1 < P [d] ≤ 10 (hot), 10 < P [d] ≤ 100 (warm), 100 < P [d] ≤ 1000 (temperate), 1000 < P [d] ≤ 104 (cold), and 104 < P [d] ≤ 105 (ultra-cold). The gray histograms at the top and right correspond to the underlying distributions of orbital periods and masses. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/08/The-NEID-Earth-Twin-SurveyIV.png?resize=1200%2C719&ssl=1)
We present the confirmation of HD 190360 d, a warm (P=88.690+0.051−0.049 d), low-mass (msini=10.23+0.81−0.80 M⊕) planet orbiting the nearby (d=16.0 pc), Sun-like (G7) star HD 190360.
![Observational data on the relative surface temperatures of the Earth and Mars Ts/Ts0 (upper left panel) vs. the theoretical predictions by a few cosmological models at various values of the Hubble parameter normalized to h = 100 km/s/Mpc (dotted curves in three other panels). Solid curves correspond to the standard intergalactic value of the Hubble parameter; and the long-dashed curves, to the original Kˇr´ıˇzek–Somer model [16, 21]. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/08/Estimating-The-Local-Hubble-Parameter.png?resize=1200%2C716&ssl=1)
The problem of local (e.g., interplanetary) Hubble expansion is studied for a long time but remains a controversial subject till now; and of particular interest is a plausible value of […]
People have long been intrigued by the possibility of life beyond Earth and how it might endure in extraterrestrial environments. There is no confirmed evidence of extraterrestrial life, not even […]
Researchers are closer to equipping a dog-like robot to conduct science on the surface of Mars after five days of experiments this month at White Sands National Park in New […]
The preservation of organic compounds under extreme environmental conditions remains a critical challenge for both terrestrial ecology applications on Earth and astrobiology.
This dazzling light show appears when charged particles from the Sun are guided by Earth’s magnetic field towards the polar regions, where they collide with gases in the upper atmosphere […]
Future missions dedicated to the search for extant life on Mars will require a clear understanding of the organic biosignature degradation processes in the shallow icy subsurface.
Unoccupied aircraft systems (UAS) technology on Earth has become increasingly prevalent and accessible, and for extraterrestrial applications, the Ingenuity helicopter has proven the viability of flight on Mars.
Astronaut Arnaud Prost is taking closeup pictures of a sample through a portable microscope to evaluate the mineral phases. Astrobiology, Astrogeology,
