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Under Pressure: How the Density of Exoplanets' Atmospheres Weighs on the Odds for Alien Life
Topic: Alien Life
05/02/13
Summary: A recent study explores how atmospheric pressure on Earth-like worlds could impact their ability to possess liquid water on their surfaces.

Looking for Life by the Light of Dying Stars
Topic: Alien Life
04/26/13
Summary: A new study suggests that technology advances in the next decade could allow astronomers to detect biosignatures in the atmospheres of planets around dead stars.

The Great Exoplanet Debate, part 6: The Future of Exoplanet Missions
Topic: Alien Life
04/15/13
Summary: At a NASA conference, exoplanet scientists held a lively discussion about issues facing the search for and understanding of extrasolar planets. In part six of this series, the panelists discuss the exciting possibilities of future missions, from the recently-selected TESS Explorer-class mission, to the idea of a hundred-year Starship.

The Great Exoplanet Debate, part 5: Exoplanet Missions
Topic: Alien Life
04/08/13
Summary: At a NASA conference, a panel of exoplanet scientists held a lively discussion about some of the most important issues facing the search for and understanding of planets orbiting far-distant stars. In part five of this series, the panelists discuss the Decadal Survey and its influence on exoplanet missions.

The Rio Scale: Quantifying the Consequences of an ET Discovery
Topic: Alien Life
04/04/13
Summary: The Rio Scale index (RSI) provides a way to estimate the significance for our civilization of contact with an extraterrestrial intelligence.

Escala do Rio: Quantificando as Consequências do Anúncio da Descoberta de Inteligência Extraterrestre
Topic: Alien Life
04/04/13
Summary: O índice da Escala do Rio (IER) provém uma forma de estimar a importância para nossa civilização do contato com uma inteligência extraterrestre.

The Great Exoplanet Debate, part 4: Questioning Habitability
Topic: Alien Life
04/01/13
Summary: At a NASA conference, a panel of exoplanet scientists held a lively discussion about some of the most important issues facing the search for and understanding of planets orbiting far-distant stars. In part four of this series, the panelists answer some questions from the audience.

The Great Exoplanet Debate, part 3: Limits to Determining Habitability
Topic: Alien Life
03/25/13
Summary: In part three of The Great Exoplanet Debate, the panel discusses our broadening view of the 'habitable zone' around different star types, and our preconceptions of what makes a 'habitable environment.'

The Great Exoplanet Debate, part 2: Concepts of Habitability
Topic: Alien Life
03/18/13
Summary: In part two of The Great Exoplanet Debate, the panel discusses current concepts of habitability and how they are changing. This debate comes from a plenary session hosted by Astrobiology Magazine at the 2012 Astrobiology Science Conference.

The Great Exoplanet Debate PART 1: Worlds of Expertise
Topic: Alien Life
03/11/13
Summary: At the 2012 Astrobiology Science Conference, Astrobiology Magazine hosted a plenary session titled: "Expanding the Habitable Zone. The Hunt for Exoplanets Now and Into the Future."

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