Astronomical databases, etc.

Astrophysics Data System (ADS):
> http://esoads.eso.org

Astrophysics Source Code Library (ASCL):
> http://ascl.net/

arXiv (E-print service in the fields of physics, mathematics, etc. astro-ph can be found here.):
> http://arxiv.org/

NASA/IPAC Extragalactic Database (NED):
> http://nedwww.ipac.caltech.edu/

Strasbourg astronomical Data Center (CDS):
> http://cds.u-strasbg.fr/

The Extrasolar Planets Encyclopaedia:
> http://exoplanet.eu/​​

Published: Tue 27 Aug 2013. Modified: Thu 16 Oct 2014