Astronomical (adjective)

1. Extremely large or great in scale or degree.
2. Related to the study of astronomy.

Origin:

Early 17th century: from modern latin astronomicus, from astronomus (see astronomer).

Examples:

1. The cost of the project was astronomical.
2. The building has an astronomical number of floors.
3. His fame was astronomical.
4. The astronomical telescope was used to observe distant galaxies.
5. The astronomical data was analyzed by the scientists.