This also filled out the system inside e's orbit; additional planets there would be unstable at this system's age.

SIM can also be used to search for additional giant planets in wide orbits.

A search for additional planets using transit timing variations was negative.

Two additional planets of lower mass were later discovered by the same technique.

They had only one additional planet then and the head of it was a royal prince.

There is also a linear trend in the radial velocities, which may indicate an additional outer planet.

As of 2012, no additional planets have been found orbiting this star.

This was the first known example of an extrasolar transiting planet with an additional planet in the same system.

He also indicated the existence of two additional outer planets.

The inner cavity of the disk may be explained by the presence of additional planets.