The First Five-Planet System: 55 Cancri

(November 6, 2007)
A fifth planet is reported around 55 Cancri. The latest find has a minimum mass of 46 Earth masses and an orbital period of 260 days.

28 New Exoplanets and Four Multi-Planet Systems

(May 28, 2007)
Bounty of 28 new planets, 7 new brown dwarfs reported. Gliese 436 has a density of 2 grams/cc, indicating water.

Transiting Saturn- Mass Planet
The compact size of this planet implies a high concentration of heavy metals.





Published in the Astrophysical Journal. (link to abstract)

Super-Earth Orbiting Gliese 876
A 7.5 Earth-mass planet orbits very close to GJ 876. It is the third planet discovered around this star. This is the lowest mass exoplanet known around any nearby star.



Published in the Astrophysical Journal. (link to abstract)