NASA ADS - Astrophysics Paper Search
arXiv - Preprint Papers
NASA Skyview - See the sky in any wavelength
Simbad - Astronomical object database
NED - Extragalactic object database

General Astronomy

Astronomy Picture of the Day
Heavens Above - Skymaps & Satellite Times
Handbook of Space Astronomy and Astrophysics
Encyclopedia of Astronomy and Astrophysics

Notre Dame

The University of Notre Dame
Department of Physics
Our Universe Revealed

Large Binocular Telescope

The Large Binocular Telescope
LBT Live Cameras
LBT Science Operations & Schedules


The University of Cambridge
Institute of Astronomy
IoA All-Sky Camera
Live Cambridge Weather