SETI

A Stunning Short Video:

A Stunning Short Video: "Scavenger"

In 1977 NASA launched two golden records into deep space on the Voyager I and II probes. Having left our solar system, they are the most distant human-made objects. The records carry sounds and images of our planet and human brainwaves.

SETI

Technosignatures Workshop: Looking at Searching for Life Beyond Earth

Technosignatures Workshop: Looking at Searching for Life Beyond Earth

Since the beginning of civilization, humanity has wondered whether we are alone in the universe. As NASA has explored our solar system and beyond, it has developed increasingly sophisticated tools to address this fundamental question.

Astrobiology (general)

An Astrobiology Science Strategy for the Search for Life in the Universe

An Astrobiology Science Strategy for the Search for Life in the Universe

Are we alone in the universe? Astrobiology, the study of the origins of life in the universe and the search for life on other worlds, is a highly interdisciplinary and rapidly changing field at the intersection of biology, chemistry, geology, planetary science, and physics.

Biosignatures & Paleobiology

The Vegetation Red Edge Biosignature Through Time on Earth and Exoplanets

The Vegetation Red Edge Biosignature Through Time on Earth and Exoplanets

The high reflection of land vegetation in the near-infrared, the vegetation red edge (VRE), is often cited as a spectral biosignature for surface vegetation on exoplanets.

Biosignatures & Paleobiology

Detecting Water In the atmosphere of HR 8799 c with L-band High Dispersion Spectroscopy Aided By Adaptive Optics

Detecting Water In the atmosphere of HR 8799 c with L-band High Dispersion Spectroscopy Aided By Adaptive Optics

High dispersion spectroscopy of brown dwarfs and exoplanets enables exciting science cases, e.g., mapping surface inhomogeneity and measuring spin rate.

Mars

Ancient Mars Had Right Conditions for Underground Life

Ancient Mars Had Right Conditions for Underground Life

A new study shows evidence that ancient Mars probably had an ample supply of chemical energy for microbes to thrive underground.

Astrobiology (general)

Plans for European Astrobiology Institute Announced

Plans for European Astrobiology Institute Announced

Astrobiology, the study of the origin, evolution and future of life on Earth and beyond, is a multidisciplinary field that has expanded rapidly over the last two decades.

Extremeophiles and Extreme Environments

Candy-Pink Lagoon Serves Up Salt-Rich Diet for Potential Life on Mars

Candy-Pink Lagoon Serves Up Salt-Rich Diet for Potential Life on Mars

The discovery of a microorganism that gives a candy-pink lagoon in central Spain its startling colour is providing new evidence for how life could survive on a high-salt diet on Mars or Europa.

TRAPPIST-1

Evolved Climates and Observational Discriminants for the TRAPPIST-1 Planetary System

Evolved Climates and Observational Discriminants for the TRAPPIST-1 Planetary System

The TRAPPIST-1 planetary system provides an unprecedented opportunity to study terrestrial exoplanet evolution with the James Webb Space Telescope (JWST) and ground-based observatories.

Astrochemistry

Exploring the Origins of Earth's Nitrogen: Astronomical Observations of Nitrogen-bearing Organics in Protostellar Environments

Exploring the Origins of Earth's Nitrogen: Astronomical Observations of Nitrogen-bearing Organics in Protostellar Environments

It is not known whether the original carriers of Earth's nitrogen were molecular ices or refractory dust.

Planetary Protection

Report: Review and Assessment of Planetary Protection Policy Development Processes

Report: Review and Assessment of Planetary Protection Policy Development Processes

Protecting Earth's environment and other solar system bodies from harmful contamination has been an important principle throughout the history of space exploration. For decades, the scientific, political, and economic conditions of space exploration converged in ways that contributed to effective development and implementation of planetary protection policies at national and international levels.

More top stories from September.