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exoplanets

This tag is associated with 156 posts
The nearly circular orbits in our solar system, not drawn to scale.

How Weird Is Our Solar System?

Earth and its Solar System compatriots all have nearly circular orbits, but many exoplanets orbit their stars on wildly eccentric paths. Is our home system strange? Or is our sense of the data skewed?

New detections of exoplanet HD 95086 b with the Gemini Planet Imager

HD 95086 b is one of the first exoplanets directly imaged with the newly commissioned instrument Gemini Planet Imager. This is only the first in what is likely to be a long line of exciting results coming from this state of the art instrument.

Hot Jupiters and Their Effects on Host Stars

Hot Jupiters offer an interesting mechanism for affecting the rotation and magnetic activity levels of their host stars.

Can planets and stars spin in unison?

The orbits of some recently discovered exoplanets seem to be synchronised with the rotation of their host stars. Can this mystery be explained?

Can Planets Maintain Vega’s Debris Disks?

Vega’s system of debris disks can be explained by a series of planets that constantly transport material inwards towards the star.

A Planet for Every M Dwarf Star?

A recent result on the commonality of exoplanets has made headlines, but has it for the right reasons?

Kepler 2.0

The Kepler Space Telescope gets a promising second chance with a new mission called “K2″.

How Green Can a Planet in a Resonant Orbit Be?

Planets orbiting close to type-M dwarf stars are in the habitable zone, but if their orbits are in a 3:2 spin resonance, do their long, strange days and nights have a chance of supporting photosynthetic life?

Cloudy with a chance of Carbon Monoxide

Tune in now for the first extrasolar weather map of a nearby brown dwarf, made using Doppler imaging.

Stellar Flybys and Damping Disks: How to Excite an Exoplanet

Close encounters with a passing star can excite a planet into an eccentric or inclined orbit. But a circumstellar disk can damp a planet’s eccentricity and inclination. Who wins? Find out when the authors of this paper model a stellar flyby with two circumstellar disks!

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