The Martian environment, characterized by extreme aridity, frigid temperatures, and a lack of
atmospheric oxygen, presents a formidable challenge for potential terraforming endeavors …

The health impacts of low-dose ionizing radiation exposures have been a subject of debate
over the last three to four decades. While there has been enough evidence of “no adverse …

This paper presents a reformulation of the submarine alkaline hydrothermal theory for the
emergence of life in response to recent experimental findings. The theory views life, like …

We explore some of the ramifications arising from superflares on the evolutionary history of
Earth, other planets in the solar system, and exoplanets. We propose that the most powerful …

Nearly half a century ago, two papers postulated the likelihood of lunar lava tube caves
using mathematical models. Today, armed with an array of orbiting and fly‐by satellites and …

Live (not decayed) radioisotopes on the Earth and Moon are messengers from recent
nearby astrophysical explosions. Measurements of 60Fe in deep-sea samples, Antarctic …

Life has evolved on Earth for about 4 billion years in the presence of the natural background
of ionizing radiation. It is extremely likely that it contributed, and still contributes, to sha** …

Recently, many Earth-sized planets have been discovered around stars other than the Sun
that might possess appropriate conditions for life. The development of theoretical methods …

Abstract Space is a hostile environment characterized by high vacuum, extreme
temperatures, meteoroids, space debris, ionospheric plasma, microgravity and space …

We consider the production and deposition on Earth of isotopes with half-lives in the range
10 5–10 8 yr that might provide signatures of nearby stellar explosions, extending previous …