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exoplanets

This tag is associated with 181 posts

Could we detect signs of life on a massive super-Earth?

We have one canonical idea of what life looks like on Earth: nitrogen, water, carbon dioxide. But would this be true on another world? When looking for life in the atmospheres of exoplanets, we might want to consider searching for something completely different.

Exploring the Planetary Graveyard

Over the past decade the study of planetary debris at white dwarfs has become an increasingly exciting area. Observations of this debris have allowed us to make unique discoveries about the chemical composition of extrasolar rocky planets, as well as revealing the endpoints of the evolution of planetary systems very similar to our own…

Habitability Still a Go on Tidally Locked Terrestrial Exoplanets

Yang et al. use climate models to investigate whether rocky exoplanets around M-stars can retain their oceans in the face of tidal locking.

Habitable Moons at the Ice Line?

Those of us who love astrobiology get really worked up about the lack of Earth-sized exoplanets found at Earth-like distances from their stars. All we want, we who hope for lots of extraterrestrial life, is a bunch of Earth-like planets doing Earth-like things so we can feel better about the odds for lots of Earth-like life in the universe.

Tuning in to Radio Exoplanets

Title: Limits on low frequency radio emission from southern exoplanets Authors: Tara Murphy, et al. First Author Institution: Sydney Institute for Astronomy, The University of Sydney, Australia Status: Accepted for publication in MNRAS Astrobites is no stranger to exotic exoplanet discoveries- the Kepler mission alone has increased our knowledge of these worlds by leaps and bounds, and many exciting discoveries have been done […]

The Singles’ Club

Many exoplanets in our galaxy are all alone. They have no one to cuddle up to on those cold, lonely nights in space…

Planet Formation on a Budget

There does not seem to be enough mass in protoplanetary disks to build the planetary systems we’ve detected. The solution: planet formation might start sooner than previously thought.

Gamma Ray Bursts vs. All Life on Earth

Asteroids and volcanoes are familiar harbingers of global doom. But what about Gamma Ray Bursts? Is another doomsday lurking?

A Deeper Look into the Atmospheres of HR8799 c and d with GPI

The authors break in the new Gemini Planet Imager with spectroscopy of the well-studied but not yet well-explained exoplanets HR 8799 c and d.

Herschel’s View of a Neighboring Planetary System

Herschel provides an updated look at the debris disk in the popular planetary system, Tau Ceti.

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