Extrasolar Planets

A Hot Super-Neptune With an Earth-sized Low-mass Companion

A Hot Super-Neptune With an Earth-sized Low-mass Companion

We report on the characterization of the Kepler-101 planetary system, thanks to a combined DE-MCMC analysis of Kepler data and forty radial velocities obtained with the HARPS-N spectrograph. This system was previously validated by Rowe et al. (2014) and is composed of a hot super-Neptune, Kepler-101b, and an Earth-sized planet, Kepler-101c.

Extrasolar Planets

Optimal Measures for Characterizing Water-rich Super-Earths

Optimal Measures for Characterizing Water-rich Super-Earths

The detection and atmospheric characterization of super-Earths is one of the major frontiers of exoplanetary science. Currently, extensive efforts are underway to detect molecules, particularly H2O, in super-Earth atmospheres.

Genomics and Cell Biology

New Research Sheds Light on Microbial Evolution

New Research Sheds Light on Microbial Evolution

Two Northeastern University researchers and their international colleagues have created an advanced model aimed at exploring the role of neutral evolution in the biogeographic distribution of ocean microbes.

Extrasolar Planets

Water Vapor in the Spectrum of Extrasolar Planet HD 189733b: 2. The eclipse

Water Vapor in the Spectrum of Extrasolar Planet HD 189733b: 2. The eclipse

Spectroscopic observations of exoplanets are crucial to infer the composition and properties of their atmospheres. HD 189733b is one of the most extensively studied exoplanets and is a corner stone for hot Jupiter models.

Mars

Martian Meteorite Yields More Evidence of Possibility of Life on Mars

Martian Meteorite Yields More Evidence of Possibility of Life on Mars

The finding of a 'cell-like' structure, which investigators now know once held water, came about as a result of collaboration between scientists in the UK and Greece. Their findings are published in the latest edition of the journal Astrobiology.

Origin & Evolution of Life

Early Earth Less Hellish Than Previously Thought

Early Earth Less Hellish Than Previously Thought

Conditions on Earth for the first 500 million years after it formed may have been surprisingly similar to the present day, complete with oceans, continents and active crustal plates.

NASA Astrobiology Institute

Carl Pilcher Returns to NAI as Interim Director

Carl Pilcher Returns to NAI as Interim Director

The NASA Astrobiology Institute (NAI) welcomes back Dr. Carl B. Pilcher as NAI Interim Director.

Habitable Zones & Global Climate

First Evidence for Water Ice Clouds Outside Our Solar System

First Evidence for Water Ice Clouds Outside Our Solar System Video in Story

A team of scientists led by Carnegie's Jacqueline Faherty has discovered the first evidence of water ice clouds on an object outside of our own Solar System.

Extrasolar Planets

Effects of XUV Radiation on Circumbinary Planets

Effects of XUV Radiation on Circumbinary Planets

Several circumbinary planets have recently been discovered. The orbit of a planet around a binary stellar system poses several dynamic constraints.

Habitable Zones & Global Climate

Effects of Stellar Winds on the Magnetospheres and Potential Habitability of Exoplanets

Effects of Stellar Winds on the Magnetospheres and Potential Habitability of Exoplanets

The principle definition of habitability for exoplanets is whether they can sustain liquid water on their surfaces, i.e. that they orbit within the habitable zone.

Origin & Evolution of Life

Oxygen-producing Life A ppeared at Least 60 Million Years Earlier Than Previously Thought

Oxygen-producing Life A ppeared at Least 60 Million Years Earlier Than Previously Thought

Geologists from Trinity College Dublin have rewritten the evolutionary history books by finding that oxygen-producing life forms were present on Earth some 3 billion years ago - a full 60 million years earlier than previously thought.

More top stories from September.