@misc{indiciae2d62ff8a8545,
  title = {Hubble Space Telescope: A cosmic time machine},
  author = {Westphal, J. A. and Harms, R. J. and Brandt, J. C. and Bless, R. C. and Macchetto, F. D. and Jefferys, W. H.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910008527},
  note = {Source identifier: 19910008527}
}