Mars

Olivine-Carbonate Mineralogy of the Jezero Crater Region

Olivine-Carbonate Mineralogy of the Jezero Crater Region

A well-preserved, ancient delta deposit, in combination with ample exposures of carbonate rich materials, make Jezero Crater in Nili Fossae a compelling astrobiological site.

Astrochemistry

Observations Of CH3OH And CH3CHO In A Sample of Protostellar Outflow Sources

Observations Of CH3OH And CH3CHO In A Sample of Protostellar Outflow Sources

Iram 30-m Observations towards eight protostellar outflow sources were taken in the 96-176 GHz range. Transitions of CH3OH and CH3CHO were detected in seven of them.

Microbiology

Earth's Marine Viruses Studied From Pole To Pole

Earth's Marine Viruses Studied From Pole To Pole

New research provides the most complete account to date of the viruses that impact the world's oceans, increasing the number of known virus populations tenfold.

Habitable Zones & Global Climate

Atmospheres and UV Environments of Earth-like Planets Throughout Post-Main Sequence Evolution

Atmospheres and UV Environments of Earth-like Planets Throughout Post-Main Sequence Evolution

During the post-main sequence phase of stellar evolution the orbital distance of the habitable zone, which allows for liquid surface water on terrestrial planets, moves out past the system's original frost line, providing an opportunity for outer planetary system surface habitability.

Geobiology

Microbes Could Influence Earth's Geological Processes As Much As Volcanoes

Microbes Could Influence Earth's Geological Processes As Much As Volcanoes

By acting as gatekeepers, microbes can affect geological processes that move carbon from the earth's surface into its deep interior, according to a study published in Nature and coauthored by microbiologists at the University of Tennessee, Knoxville.

Habitable Zones & Global Climate

Internal Structure and CO2 Reservoirs of Habitable Water-Worlds

Internal Structure and CO2 Reservoirs of Habitable Water-Worlds

Water-worlds are water-rich (>1 wt% H2O) exoplanets. The classical models of water-worlds considered layered structures determined by the phase boundaries of pure water.

Planetary Protection

NASA's New Planetary Protection Board

NASA's New Planetary Protection Board

Following National Academy of Sciences recommendations, advice from the NASA Advisory Council, and subsequent unanimous agreement from NASA's science leadership, the agency has established an independent Planetary Protection Review Board to review established guidelines for planetary protection and recommend any updates that are required.

Microbiology

Slime Mold Absorbs Substances To Memorize Them

Slime Mold Absorbs Substances To Memorize Them

Physarum polycephalum is a complex single-cell organism that has no nervous system. It can learn and transfer its knowledge to its fellow slime moulds via fusion.

Extrasolar Planets

Unexpectedly Strong Effect of Supergranulation on the Detectability of Earth Twins Orbiting Sun-like Stars With Radial Velocities

Unexpectedly Strong Effect of Supergranulation on the Detectability of Earth Twins Orbiting Sun-like Stars With Radial Velocities

Magnetic activity and surface flows at different scales pertub radial velocity measurements.

Biochemistry

Light And Peptides: New Method Diversifies Natural building Blocks Of Life

Light And Peptides: New Method Diversifies Natural building Blocks Of Life

Discovering new biological targets is a critical part of our ongoing battle against diseases. Over the years, scientists have made impressive progress towards the understanding of biological systems, constantly identifying novel targets.

Habitable Zones & Global Climate

Blue, White, and Red Ocean Planets - Simulations of Orbital Variations in Flux and Polarization Colors

Blue, White, and Red Ocean Planets - Simulations of Orbital Variations in Flux and Polarization Colors

An exoplanet's habitability will depend strongly on the presence of liquid water. Flux and/or polarization measurements of starlight that is reflected by exoplanets could help to identify exo-oceans.

More top stories from April.