SIS means SETI Search for Extra-Terrestial Intelligence Intercept System in Astronomy

Similar to SIS

AOA - ASCA Online Arxiv
AOSS - AURA Observatory Support Services
APOD - Astronomy Picture Of the Day
APT - Astronomers Proposal Tools
APT - Automatic Photometric Telescope
AQR - Aquarius
ARAA - Annual Review of Astronomy and Astrophysics

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