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In 2011, around that same star, four exoplanets were rendered viewable in a NICMOS image taken in 1998, using advanced data processing.<ref name=exoplanets>[http://www.nasa.gov/mission_pages/hubble/science/elusive-planets.html NASA - Astronomers Find Elusive Planets in Decade-Old Hubble Data - 10.06.11]</ref> The exoplanets were originally discovered with the [[W. M. Keck Observatory|Keck telescopes]] and the [[Gemini North]] telescope between 2007 and 2010.<ref name=exoplanets/> The image allows the orbits of the exoplanets to be analyzed more closely, since they take many decades, even hundreds of Earth years, to orbit their host star.<ref name=exoplanets/>
NICMOS observed the exoplanet [[XO-2Nb|XO-2b]] at star [[XO-2 (star)|XO-2]], and a spectroscopy result was obtained for this exoplanet in 2012.<ref name="cds.cern.ch">{{Cite web|url=http://cds.cern.ch/record/1489206|title=Cern Authentication}}</ref> This uses the spectroscopic abilities of the instrument, and in astronomy spectroscopy during a planetary transit (an exoplanet passes in front of star from the perspective of Earth) is a way to study that exoplanet's possible atmosphere.<ref name="cds.cern.ch"/>
In 2014, researchers recovered planetary discs in old NICMOS data using new image processing techniques.<ref>{{Cite web | url=https://www.nasa.gov/press/2014/april/astronomical-forensics-uncover-planetary-disks-in-nasas-hubble-archive/ | title=Astronomical Forensics Uncover Planetary Disks in NASA's Hubble Archive| date=2014-04-24}}</ref>
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