  The Next Generation Very Large Array (ngVLA) is a planned radio
interferometer providing unprecedented sensitivity at wavelengths between 21 cm
and 3 mm. Its 263 antenna element array will be spatially distributed across
North America to enable both superb low surface brightness recovery and
sub-milliarcsecond angular resolution imaging. The project was developed by the
international astronomy community under the lead of the National Radio
Astronomy Observatory (NRAO), and is anticipated to be built between 2027 and
2037. Two workshops have been held in 2022 and 2023 with the goal to discuss
and consolidate the scientific interests in the ngVLA within the German
astronomical community. This community paper constitutes a collection of 48
science ideas which the German community aims to pursue with the ngVLA in the
2030s. This is not a complete list and the ideas are not developed at the level
of a "Science Book", such that the present document is mainly meant provide a
basis for further discussion within the community. As such, additional
contributions are welcome, and will be considered for inclusion in future
revisions.
