Columbia subject headings:
Harvard subject headings:
Astrophysics--Research.
Hubble Space Telescope (Spacecraft)
Space astronomy
Ultraviolet astronomy.
United States. National Aeronautics and Space Administration
Princeton subject headings:
Astrophysics--Research--United States.
Hubble Space Telescope (Spacecraft)
Space astronomy--Research--United States.
Ultraviolet astronomy--Research--United States.