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References

References

  1. Staff (2020). "How many stars are there in the Universe?". European Space Agency. Retrieved January 17, 2020.
  2. Mackie, Glen (February 1, 2002). "To see the Universe in a Grain of Taranaki Sand". Swinburne University of Technology. Retrieved January 17, 2020.
  3. Mack, Eric (March 19, 2015). "There may be more Earth-like planets than grains of sand on all our beaches - New research contends that the Milky Way alone is flush with billions of potentially habitable planets -- and that's just one sliver of the universe". CNET. Retrieved February 11, 2021.
  4. Staff (2020). "The Extrasolar Planets Encyclopaedia - Catalog". The Extrasolar Planets Encyclopedia. Retrieved January 17, 2020.
  5. Staff (2020). "Martians on Mars found by the Curiosity rover". 360cities.net. Retrieved January 17, 2020.
  6. 6.0 6.1 Cofield, Calla (August 24, 2016). "How We Could Visit the Possibly Earth-Like Planet Proxima b". Space.com. Retrieved January 17, 2020.
  7. Bogdan, Dr. Dennis (2020). "Calculation - Time to nearest star". LiveJournal. Archived from the original on August 20, 2020. Retrieved January 17, 2020. {{cite web}}: |archive-date= / |archive-url= timestamp mismatch; August 21, 2020 suggested (help)
  8. Fraknoi, Andrew (2007). "How Fast Are You Moving When You Are Sitting Still?" (PDF). NASA. Retrieved January 17, 2020.
  9. Kolata, Gina (June 14, 2012). "In Good Health? Thank Your 100 Trillion Bacteria". The New York Times. Retrieved January 17, 2020.
  10. Novacek, Michael J. (November 8, 2014). "Prehistory's Brilliant Future". The New York Times. Retrieved January 17, 2020.
  11. Bogdan, Dr. Dennis (February 16, 2020). "The one particular chemical is Nucleic Acid - a basic chemical for all known life forms - in the form of DNA - and/or - RNA - that defines - by way of a particular genetic code sequence - all the astronomically diverse known life forms on Earth - all such known life forms are essentially a variation of this particular Nucleic Acid chemical that, at a very basic level, has been uniquely coded for a specific known life form". Dr. Dennis Bogdan.
  12. Berg, J.M.; Tymoczko, J.L.; Stryer, L. (2002). Chapter 5. DNA, RNA, and the Flow of Genetic Information. Retrieved February 16, 2020. {{cite book}}: |work= ignored (help)
  13. Baker, Harry (11 July 2021). "How many atoms are in the observable universe?". LiveScience. Retrieved 11 July 2021.
  14. Sundermier, Ali (September 23, 2016). "99.9999999% of Your Body Is Empty Space". ScienceAlert. Retrieved January 17, 2020.