7+ hour, 47+ min ago  (10+ words) Studying asteroids addresses a number of unknowns in planetary science....

7+ hour, 47+ min ago  (23+ words) The modern Martian surface is cold, dry, oxidizing, and perpetually bombarded with radiation, rendering it generally inhospitable to life as we know it...

7+ hour, 54+ min ago  (15+ words) Microbial productivity, metabolite fluxes, nutrient cycling and biosignatures are directly linked to microbial growth rates...

7+ hour, 54+ min ago  (369+ words) Biologist, Explorers Club Fellow, ex-NASA Space Biologist and Payload integrator, Editor of NASAWatch. com and Astrobiology. com, Lapsed climber, Explorer, Synaesthete, Former Challenger Center board member " HWO Target Stars and Systems: Activity and Rotation Catalog (ARC) of Potential Target Stars…...

7+ hour, 48+ min ago  (196+ words) astrobiology. com Titan's vertical atmospheric structure broadly resembles Earth's, with a convective troposphere, a stratosphere, and a mesosphere transitioning into a tenuous thermosphere. Despite being colder, Titan's atmosphere is more extended due to its lower gravity, with scale heights'the characteristic…...

1+ day, 5+ hour ago  (268+ words) The outer regions of AGN disks have temperatures similar to those of circumstellar disks, permitting dust condensation. Therefore, planet formation and growth could be active in these dust tori through similar mechanisms. We aim at quantifying the parameter space for…...

1+ day, 5+ hour ago  (188+ words) We use a three-dimensional model to calculate steady-state climates at various intervals in Earth's future, across a parameter space of increasing insolation and decreasing CO2 mixing ratio. Comparison with prior results shows an overestimation of warming by one-dimensional models when solar…...

1+ day, 5+ hour ago  (221+ words) The crystallinity of water ice not only records the thermal history experienced by an astronomical body, but also affects the composition of forming planets by controlling the trapping of volatile materials in amorphous ice and their subsequent transport. An additional…...

2+ day, 6+ hour ago  (381+ words) Some animals can move efficiently beneath granular surfaces. These include the sandfish (Scincus scincus), a lizard native to the Sahara: it can burrow into the sand and then literally "swim" through the desert sand to hunt or escape predators. The…...

2+ day, 6+ hour ago  (262+ words) The Search For Technosignatures: A Review Of Possibilities astrobiology. com The Search For Technosignatures: A Review Of Possibilities This paper aims to review the diverse range of technosignatures that have been proposed in the literature. We organize the review by…...