about Grigoris Maravelias
Tag: <span>exoplanet</span>

Tag: exoplanet

How many exoplanets in our Galaxy?

In Cassan et al. 2012 (Nature, 481, 167), “One or more bound planets per Milky Way star from microlensing observations“) we read the following very interesting statement: Here we report a statistical analysis of microlensing data (gathered in 2002–07) that reveals the fraction of bound planets 0.5–10 AU (Sun–Earth distance) …

Kepler’s first results

Kepler is a space based telescope to study a small area between Cygnus and Lyra for exoplanet transits of all possible targets but mainly to find Earth sized candidates in the habitable zone. A fist publication reveals these numbers: “On 1 February 2011 the Kepler Mission released data for 156,453 …