In the 1970s the European Space Agency and the National Aeronautics and Space Administration began working together to design and build what would become the Hubble Space Telescope. On April 25, 1990, five astronauts aboard the space shuttle Discovery deployed the eagerly anticipated telescope in ...
What can emission lines tell us about an astrophysical object? A workshop at the Space Telescope Science Institute was dedicated to address just this question - for a host objects (including planetary nebulae and active galactic nuclei) across a broad range of wavelengths (from the infrared through ...