The Mars 2020 mission will seek the signs of ancient life on Mars and will identify, prepare,
document, and cache a set of samples for possible return to Earth by a follow-on mission …

The conditions, timing, and setting for the origin of life on Earth and whether life exists
elsewhere in our solar system and beyond represent some of the most fundamental …

Earth is the only planet known to have continents, although how they formed and evolved is
unclear. Here using the oxygen isotope compositions of dated magmatic zircon, we show …

A committee of the Mars Exploration Program Analysis Group (MEPAG) has reviewed and
updated the description of Special Regions on Mars as places where terrestrial organisms …

This article presents a current (as of September 2019) list of recommended ages for proven
terrestrial impact structures (n= 200) and deposits (n= 46) sourced from the primary …

The NASA Mars 2020 Perseverance Rover Mission has collected samples of rock, regolith,
and atmosphere within the Noachian-aged Jezero Crater, once the site of a delta-lake …

This review of material relevant to the Conference on Biosignature Preservation and
Detection in Mars Analog Environments summarizes the meeting materials and discussions …

Over the past couple of decades, it is has become widely recognized that impact cratering is
a ubiquitous geological process that affects all planetary objects with a solid surface. Indeed …

A well‐preserved, ancient delta deposit, in combination with ample exposures of carbonate
outcrops, makes Jezero Crater in Nili Fossae a compelling astrobiological site. We use …

The Martian surface is cold, dry, exposed to biologically harmful radiation and apparently
barren today. Nevertheless, there is clear geological evidence for warmer, wetter intervals in …