The Star You Can Never Reach
In short: Light lets us see far across an expanding universe, but cosmic horizons mean only a small share of what we can observe could ever be affected by us, and still less could ever be reached.
A 1:54 short film in the series “Journey of Light”, narrated by intellect_voice_01.
Sources used in this film: NASA Science (National Aeronautics and Space Administration), “How Does Webb See Back in Time? - NASA Science”; NASA Science (National Aeronautics and Space Administration), “How Can Webb Study the Early Universe? - NASA Science”; University of Tennessee, Knoxville, Department of Physics and Astronomy (csep10.phys.utk.edu astronomy course pages), “Look-Back Times”; arXiv preprint by Toby Ord, Future of Humanity Institute, University of Oxford, “The Edges of Our Universe”; NASA Science (National Aeronautics and Space Administration), “What is Dark Energy? Inside Our Accelerating, Expanding Universe - NASA Science”; U.S. Department of Energy, Office of Science, “DOE Explains...Cosmic Acceleration and Dark Energy”; Cambridge University Press (Publications of the Astronomical Society of Australia; authors Tamara M. Davis and Charles H. Lineweaver), “Expanding Confusion: Common Misconceptions of Cosmological Horizons and the Superluminal Expansion of the Universe | Publications of the Astronomical Society of Australia | Cambridge Core”; arXiv (preprint of a paper by Tamara M. Davis and Charles H. Lineweaver, published in Publications of the Astronomical Society of Australia), “Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the Universe”; IOP Publishing for the American Astronomical Society (Research Notes of the AAS; article by Abraham Loeb, May 2023), “The Horizon of Future Intergalactic Travel”; Scientific American (article by Charles H. Lineweaver and Tamara M. Davis, March 2005; hosted by the Australian National University), “sad0305Line6p.indd”; University of Texas at Austin, Department of Astronomy (Komatsu lecture notes, Spring 2006), “lecture17.pdf”; NASA/IPAC Extragalactic Database (NED), Caltech, hosting 'TASI Lectures: Introduction to Cosmology', “TASI Lectures: Introduction to Cosmology”.
Sources used in this film
- NASA Science (National Aeronautics and Space Administration) — How Does Webb See Back in Time? - NASA Science · View →
- NASA Science (National Aeronautics and Space Administration) — How Can Webb Study the Early Universe? - NASA Science · View →
- University of Tennessee, Knoxville, Department of Physics and Astronomy (csep10.phys.utk.edu astronomy course pages) — Look-Back Times · View →
- arXiv preprint by Toby Ord, Future of Humanity Institute, University of Oxford — The Edges of Our Universe · View →
- NASA Science (National Aeronautics and Space Administration) — What is Dark Energy? Inside Our Accelerating, Expanding Universe - NASA Science · View →
- U.S. Department of Energy, Office of Science — DOE Explains...Cosmic Acceleration and Dark Energy · View →
- Cambridge University Press (Publications of the Astronomical Society of Australia; authors Tamara M. Davis and Charles H. Lineweaver) — Expanding Confusion: Common Misconceptions of Cosmological Horizons and the Superluminal Expansion of the Universe | Publications of the Astronomical Society of Australia | Cambridge Core · View →
- arXiv (preprint of a paper by Tamara M. Davis and Charles H. Lineweaver, published in Publications of the Astronomical Society of Australia) — Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the Universe · View →
- IOP Publishing for the American Astronomical Society (Research Notes of the AAS; article by Abraham Loeb, May 2023) — The Horizon of Future Intergalactic Travel · View →
- Scientific American (article by Charles H. Lineweaver and Tamara M. Davis, March 2005; hosted by the Australian National University) — sad0305Line6p.indd · View →
- University of Texas at Austin, Department of Astronomy (Komatsu lecture notes, Spring 2006) — lecture17.pdf · View →
- NASA/IPAC Extragalactic Database (NED), Caltech, hosting 'TASI Lectures: Introduction to Cosmology' — TASI Lectures: Introduction to Cosmology · View →
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Sources
- Summary by Intellect · source: NASA (National Aeronautics and Space Administration), NASA Science, James Webb Space Telescope mission pages: How Does Webb See Back in Time? - NASA Science
- Also: NASA Science (National Aeronautics and Space Administration): How Can Webb Study the Early Universe? - NASA Science
- Also: University of Tennessee, Knoxville, Department of Physics and Astronomy (csep10.phys.utk.edu astronomy course pages): Look-Back Times
- Also: arXiv preprint by Toby Ord, Future of Humanity Institute, University of Oxford: The Edges of Our Universe
- Also: What is Dark Energy? Inside Our Accelerating, Expanding Universe - NASA Science
- Also: U.S. Department of Energy, Office of Science: DOE Explains...Cosmic Acceleration and Dark Energy
- Also: Cambridge University Press (Publications of the Astronomical Society of Australia; authors Tamara M. Davis and Charles H: Expanding Confusion: Common Misconceptions of Cosmological Horizons and the Superluminal Expansion of the Universe | Publications of the Astronomical Society of Australia | Cambridge Core
- Also: arXiv (preprint of a paper by Tamara M. Davis and Charles H. Lineweaver, published in Publications of the Astronomical S: Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the Universe
- Also: IOP Publishing for the American Astronomical Society (Research Notes of the AAS; article by Abraham Loeb, May 2023): The Horizon of Future Intergalactic Travel
- Also: Scientific American (article by Charles H. Lineweaver and Tamara M. Davis, March 2005; hosted by the Australian National: sad0305Line6p.indd
- Also: University of Texas at Austin, Department of Astronomy (Komatsu lecture notes, Spring 2006): lecture17.pdf
- Also: NASA/IPAC Extragalactic Database (NED), Caltech, hosting 'TASI Lectures: Introduction to Cosmology': TASI Lectures: Introduction to Cosmology
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