18 May 2016
Multi-planet system hints at extra planet in its cometary belt
... from their emission spectra taken with ALMA, suggest that the planets in the system are larger than Jupiter. "This is the very first time that a multi-planet system with orbiting dust is imaged, allowing for direct comparison with...
27 October 2017
Astronomers find system with six planets
... orbiting their host star. It also begged the question, if we could find one system like this, could we find anymore? Finding large multi-planet systems is rather difficult. It requires stable, high-precision Doppler (radial-velocity) monitoring and...
19 May 2017
Exoplanets galore and possibly the next Trappist-1 system?
... and Neptune-mass exoplanets analysed data from 8 multi-planet systems to discover; one 4-planet system around HD 20781, two 3-planet systems around HD 31527 and HD 136352, and five 2-planet systems around HD 20003, HD 21693, HD 45184, HD 51608, and...
19 January 2016
Giant double-planet system around an evolved star detected by astronomers
... get too close to their neighbours to cause significant disruption. The number of multi-planet systems found to date, regardless of the central star’s status is around 506 systems and about 280 of these have only two confirmed exoplanets. Taking into...
27 June 2016
Protoplanetary disc shares similarities with our own Solar System say researchers
... project using data gathered from instruments aboard the Herschel Space Observatory to study how multi-planet systems beyond our own Solar System formed. by performing full spectral scans of young stellar objects embedded in protoplanetary discs. The...
28 August 2016
How habitable is Proxima b?
... non-condensible gases (with a greenhouse effect or not) to prevent the formation of a cold-trap on the planet’s surface. To do this, a planet would need an appreciable atmosphere to lock the volatiles in. Inevitably, comparisons are drawn with Venus...
