JEDI: An instrument, developed at Johns Hopkins’ Applied Physics Laboratory, that will measure energetic particles that flow and are trapped within Jupiter’s space environment, known as its magnetosphere. The full name: Jupiter Energetic-particle Detector Instrument.

Digital Dumping Ground: The wasteland where old, 
rarely used, and unneeded 
files pile up inside of 
computers, depleting 
precious storage space, 
bogging down the 
system’s efficiency, and 
sapping its energy.

Spear Phishing: An email spoof fraud attempt that targets a specific organization, seeking unauthorized access to confidential data. Not typically initiated by “random hackers,” these threats are more likely conducted out of hope for financial gain, trade secrets, or for military information.

Cardiac Resynchronization Therapy (CRT): A modified pacemaker treatment that synchronizes the heartbeats and resumes normal contractions. Johns Hopkins heart specialists recently have uncovered how the pacemaker works at the biological level.