Planetary Protection

NASA's Planetary Protection Review Addresses Changing Reality of Space Exploration

NASA's Planetary Protection Review Addresses Changing Reality of Space Exploration

NASA released a report Friday with recommendations from the Planetary Protection Independent Review Board (PPIRB) the agency established in response to a recent National Academies of Sciences, Engineering, and Medicine report and a recommendation from the NASA Advisory Council. Full report: NASA Response to Planetary Protection Independent Review Board Recommendations

Habitable Zones & Global Climate

Resilient Habitability Of Nearby Exoplanet Systems

Resilient Habitability Of Nearby Exoplanet Systems

We investigate the possibility of finding Earth-like planets in the habitable zone of 34 nearby FGK-dwarfs, each known to host one giant planet exterior to their habitable zone detected by RV.

Astrogeology

Measuring The Atomic Composition Of Planetary Building Blocks

Measuring The Atomic Composition Of Planetary Building Blocks

Volatile molecules are critical to habitability, yet difficult to observe directly at the optically thick midplanes of protoplanetary disks, where planets form.

Astrochemistry

Chemical Evolution of HC3N in Dense Molecular Clouds

Chemical Evolution of HC3N in Dense Molecular Clouds

We investigated the chemical evolution of HC3N in six dense molecular clouds, using archival available data from the Herschel infrared Galactic Plane Survey (Hi-GAL) and the Millimeter Astronomy Legacy Team Survey at 90 GHz (MALT90).

Mars

Subsistence Of Ice-covered Lakes During The Hesperian at Gale crater, Mars

Subsistence Of Ice-covered Lakes During The Hesperian at Gale crater, Mars

Sedimentary deposits characterized by the Mars Science Laboratory Curiosity rover provide evidence that Gale crater, Mars intermittently hosted a fluvio-lacustrine environment during the Hesperian.

Planetary Protection

NASA to Discuss Planetary Protection Review's Findings and Recommendations

NASA to Discuss Planetary Protection Review's Findings and Recommendations

NASA will host a media teleconference at 3:30 p.m. EDT Friday, Oct. 18, to discuss recommendations presented by the Planetary Protection Independent Review Board (PPIRB), established in June 2019 by Thomas Zurbuchen, associate administrator for the agency's Science Mission Directorate.

Habitable Zones & Global Climate

How do Planetary Radius and Gravity Influence the Surface Climate of Earth-like Planets?

How do Planetary Radius and Gravity Influence the Surface Climate of Earth-like Planets?

About 4000 exoplanets have been confirmed since the year of 1992, and for most of the planets, the main parameters that can be measured are planetary radius and mass.

Panspermia

Exporting Terrestrial Life Out of the Solar System with Gravitational Slingshots of Earthgrazing Bodies

Exporting Terrestrial Life Out of the Solar System with Gravitational Slingshots of Earthgrazing Bodies

Exporting terrestrial life out of the Solar System requires a process that both embeds microbes in boulders and ejects those boulders out of the Solar System.

Astrochemistry

Complex Organic Molecules In Accretion Shocks Around A Hot Core Precursor

Complex Organic Molecules In Accretion Shocks Around A Hot Core Precursor

Zeroth moment maps of some simple molecules, and selected transitions of COMs.

Habitable Zones & Global Climate

No Snowball on Habitable Tidally Locked Planets with a Dynamic Ocean

No Snowball on Habitable Tidally Locked Planets with a Dynamic Ocean

Terrestrial planets orbiting within the habitable zones of M-stars are likely to become tidally locked in a 1:1 spin:orbit configuration and are prime targets for future characterization efforts.

Habitable Zones & Global Climate

The Effect of Land Fraction and Host Star Spectral Energy Distribution on the Planetary Albedo of Terrestrial Worlds

The Effect of Land Fraction and Host Star Spectral Energy Distribution on the Planetary Albedo of Terrestrial Worlds

The energy balance and climate of planets can be affected by the reflective properties of their land, ocean, and frozen surfaces.

More top stories from October.