Astropy

Astropy is a collection of software packages written in the Python programming language and designed for use in astronomy.

The software is a single, free, core package for astronomical utilities due to the increasingly widespread usage of Python by astronomers, and to foster interoperability between various extant Python astronomy packages.

Astropy is included in several large Python distributions; it is part of package managers for Linux and MacOS, the Anaconda Python Distribution, Enthought Canopy and Ureka.

If you work in astronomy, you should give Astropy a look.