Mars
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
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
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
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
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
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
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
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
Magnetic activity and surface flows at different scales pertub radial velocity measurements.
Biochemistry
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
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.
Recent Releases
Recent Status Reports
Calendar
- 26 Apr: Space Transportation Association Briefing With NASA Chief Scientist Jim Green
- 29 Apr: 6th IAA Planetary Defense Conference
- 29 Apr: International Planetary Defense Conference
- 30 Apr: NASA Advisory Council Human Exploration and Operations Committee Meeting
- 30 Apr: NASA Advisory Council Technology, Innovation and Engineering Committee Meeting
- 1 May: NASA Advisory Council; Regulatory and Policy Committee Meeting
- 1 May: NASA FY 2020 Budget Hearing
- 2 May: NASA Advisory Council STEM Engagement Committee Meeting
- 7 May: NASA Applied Sciences Advisory Committee Meeting
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