Titan

Cassini Discovery About Possible Prebiotic Chemistry At Titan

Cassini Discovery About Possible Prebiotic Chemistry At Titan

The international Cassini-Huygens mission has made a surprising detection of a molecule that is instrumental in the production of complex organics within the hazy atmosphere of Saturn's moon Titan.

SETI

The Breakthrough Listen Search for Intelligent Life: A Wideband Data Recorder System for the Robert C. Byrd Green Bank Telescope

The Breakthrough Listen Search for Intelligent Life: A Wideband Data Recorder System for the Robert C. Byrd Green Bank Telescope

The Breakthrough Listen Initiative is undertaking a comprehensive search for radio and optical signatures from extraterrestrial civilizations.

Habitable Zones & Global Climate

Statistical-likelihood Exo-Planetary Habitability Index (SEPHI)

Statistical-likelihood Exo-Planetary Habitability Index (SEPHI)

A new Statistical-likelihood Exo-Planetary Habitability Index (SEPHI) is presented. It has been developed to cover the current and future features required for a classification scheme disentangling whether any discovered exoplanet is potentially habitable compared with life on Earth.

Enceladus

A Novel Strategy to Seek Bio-signatures at Enceladus and Europa

A Novel Strategy to Seek Bio-signatures at Enceladus and Europa

A laboratory experiment is suggested in which conditions similar to those in the plume ejecta from Enceladus and, perhaps, Europa are established.

Extrasolar Planets

Extrasolar Planets and Their Host Stars

Extrasolar Planets and Their Host Stars

In order to understand the exoplanet, you need to understand its parent star. Astrophysical parameters of extrasolar planets are directly and indirectly dependent on the properties of their respective host stars.

Proxima Centauri b

Reduced Diversity of Life Around Proxima Centauri and TRAPPIST-1

Reduced Diversity of Life Around Proxima Centauri and TRAPPIST-1

The recent discovery of habitable exoplanets around Proxima Centauri and TRAPPIST-1 has attracted much attention due to their potential for hosting life.

Habitable Zones & Global Climate

Exomoon Habitability and Tidal Evolution in Low-Mass Star Systems

Exomoon Habitability and Tidal Evolution in Low-Mass Star Systems

Discoveries of extrasolar planets in the habitable zone (HZ) of their parent star lead to questions about the habitability of massive moons orbiting planets in the HZ. Around low-mass stars, the HZ is much closer to the star than for Sun-like stars.

Extrasolar Planets

Climate diversity on cool planets around cool stars with a versatile 3-D Global Climate Model: the case of TRAPPIST-1 planets

Climate diversity on cool planets around cool stars with a versatile 3-D Global Climate Model: the case of TRAPPIST-1 planets

TRAPPIST-1 planets are invaluable for the study of comparative planetary science outside our Solar System and possibly habitability.

SETI

Laser SETI: First Ever All-Sky All-the-Time Search

Laser SETI: First Ever All-Sky All-the-Time Search

Until now, SETI experiments (Search for Extraterrestrial Intelligence), whether listening for a radio transmitter or searching for a high-powered laser, have assumed that ET is on-the-air all the time, so that wherever the instrument is pointed, the signal will be there. Laser SETI is the first experiment to circumvent this assumption.

Astrochemistry

Hunting Molecules With The Murchison Widefield Array

Hunting Molecules With The Murchison Widefield Array

Astronomers have used an Australian radio telescope to observe molecular signatures from stars, gas and dust in our galaxy, which could lead to the detection of complex molecules that are precursors to life.

Extrasolar Planets

Implications of Tides for Life on Exoplanets

Implications of Tides for Life on Exoplanets

As evident from the nearby examples of Proxima Centauri and TRAPPIST-1, Earth-sized planets in the habitable zone of low-mass stars are common. Here, we focus on such planetary systems and argue that their (oceanic) tides could be more prominent due to stronger tidal forces.

More top stories from July.