Signal may be from first 'exomoon'

Signal may be from first 'exomoon'
 

Astronomers have discovered an object that could be the first known moon located beyond the Solar System.
If genuine, the "exomoon" is likely to be about the size and mass of Neptune, and circles a planet the size of Jupiter but with 10 times the mass.
The signal was detected by Nasa's Kepler Space Telescope; astronomers now plan to carry out follow-up observations with Hubble in October.
A paper about the candidate object is published on the Arxiv pre-print site.
To date, astronomers have discovered more than 3,000 exoplanets - worlds orbiting stars other than the Sun.
A hunt for... read more

 
27 July 2017 in World News, Views: 46
Source: BBC
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