Habitability is a widely used word in the geoscience, planetary science, and astrobiology
literature, but what does it mean? In this review on habitability, we define it as the ability of …

The habitable zone (HZ) is the circular region around a star (s) where standing bodies of
water could exist on the surface of a rocky planet. Space missions employ the HZ to select …

big history and the future of humanity" This remains the best single attempt to theorize big
history as a discipline that can link core concepts and paradigms across all historical …

JCW had long wanted to write a new monograph on supernovae. Despite an immense
explosion in the literature and many review articles, there had not been one since that of …

While grounded in the hard sciences of physics, chemistry, geology, and astronomy, as well
as well-accepted principles in the life sciences, astrobiology remains the most speculative of …

A line of sight toward the Galactic Center (GC) offers the largest number of potentially
habitable systems of any direction in the sky. The Breakthrough Listen program is …

In recent years, wide-field sky surveys providing deep multiband imaging have presented a
new path for indirectly characterizing the progenitor populations of core-collapse …

The Fermi paradox is the discrepancy between the strong likelihood of alien intelligent life
emerging (under a wide variety of assumptions) and the absence of any visible evidence for …

Ionizing radiation is a ubiquitous feature of the Cosmos, from exogenous cosmic rays (CR)
to the intrinsic mineral radioactivity of a habitable world, and its influences on the emergence …

Abstract The European AstRoMap project (supported by the European Commission Seventh
Framework Programme) surveyed the state of the art of astrobiology in Europe and beyond …