There does not seem to be enough mass in protoplanetary disks to build the planetary systems we’ve detected. The solution: planet formation might start sooner than previously thought.
Herschel provides an updated look at the debris disk in the popular planetary system, Tau Ceti.
Vega’s system of debris disks can be explained by a series of planets that constantly transport material inwards towards the star.
The disk around 49 Ceti is known to show characteristics of both protoplanetary and debris disks. New observations with Herschel reveal that it is likely a debris disk with gas generated by evaporating comets.
We’ve detected planets around pulsars before, but this pulsar has an even stranger signal. Could it be due to an asteroid belt similar to the one in our solar system orbiting it?
Resolved images of debris disks with Herschel reveal their true sizes, and test the assumptions used in unresolved observations.