4千年紀以降
pp. 341–342
↑ “Plotting the Destinations of 4 Interstellar Probes”. IEEE. 2023年11月18日閲覧。
↑ Matthews, R. A. J. (Spring 1994). “The Close Approach of Stars in the Solar Neighborhood”. Quarterly Journal of the Royal Astronomical Society 35 (1): 1. Bibcode: 1994QJRAS..35....1M.
↑ Niagara Parks. “Facts about Niagara Falls”. 2023年11月18日閲覧。
↑ Monnier, J. D.; al., et. “The Last Gasps of VY Canis Majoris: Aperture Synthesis and Adaptive Optics Imagery”. The Astrophysical Journal 512 (1): 351–361. arXiv:astro-ph/9810024. Bibcode: 1999ApJ...512..351M. doi:10.1086/306761.
↑ Tuthill, Peter; Monnier, John; Lawrance, Nicholas; Danchi, William; Owocki, Stan; Gayley, Kenneth (2008).