Habitable Zones & Global Climate

Obliquity Evolution of the Potentially Habitable Exoplanet Kepler-62f

Obliquity Evolution of the Potentially Habitable Exoplanet Kepler-62f

Variations in the axial tilt, or obliquity, of terrestrial planets can affect their climates and therefore their habitability.

Habitable Zones & Global Climate

How Alien Can Alien Worlds Be?

How Alien Can Alien Worlds Be?

In an attempt to select stars that can host planets with characteristics similar to our own, we selected seven solar-type stars known to host planets in the habitable zone and for which spectroscopic stellar parameters are available.

SETI

Breakthrough Listen Follow-up of the Reported Transient Signal Observed at the Arecibo Telescope in the Direction of Ross 128

Breakthrough Listen Follow-up of the Reported Transient Signal Observed at the Arecibo Telescope in the Direction of Ross 128

We undertook observations with the Green Bank Telescope, simultaneously with the 300m telescope in Arecibo, as a follow-up of a possible flare of radio emission from Ross 128.

Habitable Zones & Global Climate

Repercussions of Thermal Atmospheric Tides on the Rotation of Terrestrial Planets in the Habitable Zone

Repercussions of Thermal Atmospheric Tides on the Rotation of Terrestrial Planets in the Habitable Zone

Semidiurnal atmospheric thermal tides are important for terrestrial exoplanets in the habitable zone of their host stars.

Titan

Cloud Of Hydrogen Cyanide and Benzene Found On Titan

Cloud Of Hydrogen Cyanide and Benzene Found On Titan

Researchers with NASA's Cassini mission found evidence of a toxic hybrid ice in a wispy cloud high above the south pole of Saturn's largest moon, Titan.

Ceres

The Origin of Organic Compounds on Ceres

The Origin of Organic Compounds on Ceres

Since NASA's Dawn spacecraft detected localized organic-rich material on Ceres, Southwest Research Institute (SwRI) has been digging into the data to explore different scenarios for its origin.

Analog Studies

Testing Underground To Learn How To Find Life On Mars

Testing Underground To Learn How To Find Life On Mars

If life exists on Mars, it will have sought refuge underground. Trying to uncover one of the best-kept secrets in the Solar System, scientists are working a kilometre beneath the ground, with ESA astronaut Matthias Maurer joining them this week.

Mars

Study Shows How Water Could Have Flowed on 'Cold and Icy' Ancient Mars

Study Shows How Water Could Have Flowed on 'Cold and Icy' Ancient Mars

For scientists trying to understand what ancient Mars might have been like, the red planet sends some mixed signals. Water-carved valleys and lakebeds leave little doubt that water once flowed on the surface.

Astrochemistry

Astrochemistry: Overview and Challenges

Astrochemistry: Overview and Challenges

This paper provides a brief overview of the journey of molecules through the Cosmos, from local diffuse interstellar clouds and PDRs to distant galaxies, and from cold dark clouds to hot star-forming cores, protoplanetary disks, planetesimals and exoplanets.

Titan

Direct Measurement of Interparticle Forces of Titan Aerosol Analogs (

Direct Measurement of Interparticle Forces of Titan Aerosol Analogs ("Tholin") Using Atomic Force Microscopy

To understand the origin of the dunes on Titan, it is important to investigate the material properties of Titan's organic sand particles on Titan.

Astrochemistry

Mapping Vinyl Cyanide and Other Nitriles in Titan's Atmosphere Using ALMA

Mapping Vinyl Cyanide and Other Nitriles in Titan's Atmosphere Using ALMA

Vinyl cyanide (C2H3CN) is theorized to form in Titan's atmosphere via high-altitude photochemistry and is of interest regarding the astrobiology of cold planetary surfaces due to its predicted ability to form cell membrane-like structures (azotosomes) in liquid methane.

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