Mars

Mars Rocks May Harbor Signs Of Life From Four Billion Years Ago

Mars Rocks May Harbor Signs Of Life From Four Billion Years Ago

Iron-rich rocks near ancient lake sites on Mars could hold vital clues that show life once existed there, research suggests.

Habitable Zones & Global Climate

Habitability Classification of Exoplanets: A Machine Learning Insight

Habitability Classification of Exoplanets: A Machine Learning Insight

We explore the efficacy of machine learning (ML) in characterizing exoplanets into different classes. The source of the data used in this work is University of Puerto Rico's Planetary Habitability Laboratory's Exoplanets Catalog (PHL-EC).

Mars

Miniature Chemistry Lab Will Look For Life On Mars

Miniature Chemistry Lab Will Look For Life On Mars

An international team of scientists has created a tiny chemistry lab for a rover that will drill beneath the Martian surface looking for signs of past or present life.

Impact events

When Dinosaurs Died So Did Forests And Tree-dwelling Birds

When Dinosaurs Died So Did Forests And Tree-dwelling Birds

Sixty-six million years ago, the world burned. An asteroid crashed to Earth with a force one million times larger than the largest atomic bomb, causing the extinction of the dinosaurs.

Extrasolar Planets

Ground-based optical transmission spectroscopy of the small, rocky exoplanet GJ 1132b

Ground-based optical transmission spectroscopy of the small, rocky exoplanet GJ 1132b

Terrestrial Solar System planets either have high mean molecular weight atmospheres, as with Venus, Mars, and Earth, or no atmosphere at all, as with Mercury.

Origin & Evolution of Life

Organic Chemistry In A CO2 Rich Early Earth Atmosphere

Organic Chemistry In A CO2 Rich Early Earth Atmosphere

The emergence of life on the Earth has required a prior organic chemistry leading to the formation of prebiotic molecules. The origin and the evolution of the organic matter on the early Earth is not yet firmly understood.

Mars

Using Dorset UK as Model to Help Find Traces of Life on Mars

Using Dorset UK as Model to Help Find Traces of Life on Mars

By studying a stream on the UK coast, experts have calculated how much organic matter we might find on Mars, and where to look.

Origin & Evolution of Life

How Primordial Life On Earth Might Have Replicated Itself

How Primordial Life On Earth Might Have Replicated Itself

Scientists have created a new type of genetic replication system which demonstrates how the first life on Earth - in the form of RNA - could have replicated itself.

Habitable Zones & Global Climate

Orbital Variations Can Trigger Snowball States In Habitable Zones Around Sunlike Stars

Orbital Variations Can Trigger Snowball States In Habitable Zones Around Sunlike Stars

Aspects of an otherwise Earthlike planet's tilt and orbital dynamics can severely affect its potential habitability -- even triggering abrupt "snowball states" where oceans freeze and surface life is impossible, according to new research from astronomers at the University of Washington.

Biosignatures & Paleobiology

Using Deep Space Climate Observatory Measurements to Study the Earth as An Exoplanet

Using Deep Space Climate Observatory Measurements to Study the Earth as An Exoplanet

Even though it was not designed as an exoplanetary research mission, the Deep Space Climate Observatory (DSCOVR) has been opportunistically used for a novel experiment, in which Earth serves as a proxy exoplanet.

Mars

Modeling Martian Atmospheric Losses over Time: Implications for Exoplanetary Climate Evolution and Habitability

Modeling Martian Atmospheric Losses over Time: Implications for Exoplanetary Climate Evolution and Habitability

In this Letter, we make use of sophisticated 3D numerical simulations to assess the extent of atmospheric ion and photochemical losses from Mars over time.

More top stories from May.