AS PART OF NASA S NEW PROGRAMMATIC INFRASTRUCTURE IN SUPPORT OF THE ASTROBIOLOGY PROGRAM WE ARE PROPOSING A RESEARCH COORDINATION NETWORK FOR OCEAN WORLDS (NOW). THE OVERARCHING GOAL OF NOW IS ADVANCING COMPARATIVE STUDIES TO CHARACTERIZE EARTH AND OTHER OCEAN WORLDS ACROSS THEIR INTERIORS OCEANS AND CRYOSPHERES INVESTIGATE THEIR HABITABILITY SEARCH FOR BIOSIGNATURES AND UNDERSTAND LIFE IN RELEVANT OCEAN WORLD ANALOGUES AND BEYOND. THIS GOAL WILL BE ACHIEVED BY COMMUNICATION AND COLLABORATION ACROSS A VIRTUAL NETWORK OF SCIENTISTS THAT ARE SUPPORTED BY NASA TO CONDUCT DIVERSE RESEARCH RANGING FROM OUTER SOLAR SYSTEM OCEAN WORLDS TO THE OCEANS AND CRYOSPHERE OF EARTH WITH IMPLICATIONS FOR ASTROBIOLOGY. NOW WILL BE LED BY AN INTERDISCIPLINARY TEAM TO FOSTER INTELLECTUAL DEVELOPMENT ACROSS THESE FIELDS OF INQUIRY AND ADVANCE TECHNICAL CONCEPTS FOR ASSESSMENT OF HABITABILITY AND BIOSIGNATURE DETECTION IN REMOTELY SENSED AND IN SITU STUDIES