article_snippet: It might be possible to find one in data collected by Nasa’s Kepler space telescope, or it may be necessary to wait for a more powerful planet-hunter to come online, such as the Transiting Exoplanet Survey Satellite (Tess), due to launch in 2017.
article_snippet: One technique to find their that may prove successful is gravitational microlensing, which uses a foreground star to magnify a more distant one.
article_snippet: The chance alignment can reveal exoplanets around a star, and could possibly even be used to spot a moon in orbit.
article_snippet: It might be possible to find one in data collected by Nasa’s Kepler space telescope (illustration shown)
article_snippet: One technique to find moons could be gravitational microlensing, which uses a foreground star to magnify a more distant one, as shown in this diagram.
article_snippet: The chance alignment can reveal exoplanets around a star, and could possibly even be used to spot a moon in orbit .