Gliese 180

Gliese 180 (often shortened to GJ 180), is a red dwarf star, known to have two planets Gliese 180 b and Gliese 180 c.^[1] It is located 38 light-years away from the Earth.^[2]

According to the Planetary Habitability Laboratory (PHL) in Puerto Rico, both worlds in the system may be classifiable as potentially habitable planets.^[3] However, Dr Mikko Tuomi, of the UK’s University of Hertfordshire, whose team identified the planets, disagreed, stating:

"The PHL adds some sort of an “extended HZ”, which I, frankly, do not know how it’s calculated, but that adds some areas of potential habitability to the inner and outer edges of the HZ as we have defined it. They included the inner companion of the GJ 180 system (planet b) that we consider too hot to be potentially habitable.”^[4]

External Resources

• Mikko Tuomi, Hugh R. A. Jones, John R. Barnes, Guillem Anglada-Escudé, James S. Jenkins, Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics, arxiv.org, 3 March 2014.

Notes

1. ↑ GJ 180, Simbad, accessed 3 September 2014.
2. ↑ Paul Sutherland, Habitable planets common around red dwarf stars, Sen.com, 5 March 2014.
3. ↑ Paul Sutherland, Habitable planets common around red dwarf stars, Sen.com, 5 March 2014.
4. ↑ Paul Sutherland, Habitable planets common around red dwarf stars, Sen.com, 5 March 2014.