Interstellar Comet 3I/Atlas and ISS Deorbit: Scientific Opportunity vs. Practicality - Episode Hero Image

Interstellar Comet 3I/Atlas and ISS Deorbit: Scientific Opportunity vs. Practicality

Original Title:

TL;DR

  • Interstellar objects like Comet 3I/Atlas offer direct samples of other star systems, providing unique insights into the chemical diversity and formation variations of planetary systems across the galaxy.
  • Analyzing isotope ratios within comets reveals their galactic origins and the stellar processes that formed their constituent molecules, offering clues to their preservation history.
  • The precise tracking of fast-moving celestial bodies for observation with advanced telescopes like JWST is technically challenging, requiring global collaboration to refine orbital data.
  • While alien craft theories are scientifically unsubstantiated for Comet 3I/Atlas, the public fascination with such possibilities can serve as an "on-ramp" to broader scientific curiosity and engagement.
  • Controlled deorbiting of the ISS into the Pacific Ocean is the safest and least expensive option compared to graveyard orbits or uncontrolled atmospheric reentry, mitigating debris risks and potential ground impact.
  • Sending the ISS into deep space is prohibitively expensive and complex, requiring massive fuel, structural modifications, and human risk, making it an impractical alternative to controlled deorbiting.

Deep Dive

Comet 3I/Atlas represents a rare opportunity to study the composition and origins of interstellar objects, offering direct insights into the diversity of planetary systems beyond our own. While its close approach has fueled speculation about extraterrestrial life, the primary scientific value lies in analyzing its molecular makeup and isotope ratios to understand the chemical environments of its home star system. The challenging task of precisely tracking the comet for observation with instruments like the James Webb Space Telescope highlights the logistical complexities of studying transient celestial phenomena.

The scientific community's strong reaction to alien theories surrounding 3I/Atlas stems from a commitment to evidence-based reasoning and a caution against projecting human desires onto cosmic phenomena. While the possibility of microbial life existing in comets is considered a remote but not entirely impossible scientific inquiry, the notion of advanced alien civilizations is dismissed due to a lack of any supporting evidence and the inherent biases in human-like portrayals of extraterrestrials. This emphasis on rigorous scientific skepticism is crucial for advancing genuine understanding, even as the public's fascination with the unknown, often sparked by sensational theories, can serve as a valuable gateway to broader scientific curiosity and engagement.

The discussion surrounding the International Space Station's deorbiting reveals a stark contrast between romantic ideals and practical realities. While the idea of sending the ISS into deep space as a "gift to the imagination" or to potential alien civilizations is appealing, the immense cost, technical challenges, and risks associated with such a maneuver render it infeasible. The ISS was not designed for indefinite orbital life or for such a complex relocation. Consequently, a controlled deorbit into the Pacific Ocean is presented as the safest and most cost-effective option, balancing immense logistical hurdles with the need to avoid uncontrolled debris risks or prohibitively expensive graveyard orbits.

Action Items

  • Audit ISS deorbit plan: Analyze costs and risks of controlled vs. uncontrolled deorbiting to prevent debris hazards.
  • Track interstellar object trajectory: Implement continuous monitoring for 3-5 incoming interstellar objects to refine orbital predictions.
  • Measure interstellar object composition: Utilize James Webb Space Telescope for 2-3 observations to determine molecular abundances and isotope ratios.
  • Evaluate alien craft detection protocols: Draft criteria for identifying anomalous interstellar object behavior for 5-10 potential candidates.

Key Quotes

"Comet 3I Atlas this dirty snowball is a visitor from another solar system and it's only the third interstellar object we've ever found and today today it's closer to us than ever before a mere 170 million miles away so naturally space nerds like my next guests and me are really excited about this but 3i has permeated the astrophysicist's bubble and captured the spotlight in a way that i think maybe no other big hunk of rock ever has"

Flora Lewisman highlights the widespread interest in Comet 3I Atlas, noting its significance as only the third known interstellar object. She emphasizes that its current proximity to Earth has captured public attention beyond the usual scientific community. This indicates the comet's unique nature and its ability to generate broad fascination.


"what answers are you trying to get while 3i is closest to us we're mostly studying the composition of this object right now we want to know what it's made of and what clues we can get about where it came from based on that composition so we're seeing what different molecules are there and what abundances they have which tells us a little bit about the chemistry of the planetary system that it was formed from"

Dr. Stephanie Myllum explains that the primary goal during the comet's closest approach is to analyze its composition. She states that understanding the molecules present and their abundances will provide insights into the chemical makeup of the planetary system from which it originated. This approach aims to use the comet as a sample of an alien star system.


"what really excites me about these interstellar objects is the fact that we're getting samples of other star systems you know when a star forms it forms as a part of this you know more massive structure that has a star at the core and a disk that will eventually form planets and in that process you build up these cometary bodies you end up with asteroid like objects and you know every star has a different history and every cloud that they formed from you know they have different chemical abundances"

Dr. Hakeem Oluseyi expresses excitement about interstellar objects because they offer samples of other star systems. He explains that as stars form with surrounding disks, cometary and asteroid-like bodies develop, each with unique histories and chemical compositions. Therefore, studying these objects provides a window into the diversity of planetary systems across the galaxy.


"the challenges that we have right now for observing this object with the james webb space telescope is we have to know precisely where in the the sky this object is to point the telescope at the exact position that it's at this is challenging because it's moving it's it's flying across our solar system so we've been using telescopes all over the world to try to really hone in on where it is in the sky so that we can make sure we don't miss it with the james webb space telescope"

Dr. Stephanie Myllum details the difficulties in observing Comet 3I Atlas with the James Webb Space Telescope. She explains that the comet's movement across the solar system makes it challenging to pinpoint its exact location in the sky. This requires global collaboration with other telescopes to refine its orbit and ensure accurate targeting for the JWST.


"there is no evidence that we've seen to date that there is anything atypical about the composition the activity or any other phenomenon so far nothing has come up as an extreme that can't be explained by our regular physical processes that we see in comets in our own solar system"

Dr. Hakeem Oluseyi addresses the alien theories surrounding Comet 3I Atlas by stating there is no evidence to support them. He clarifies that the comet's composition, activity, and observed phenomena are consistent with known physical processes seen in comets within our own solar system. This indicates that current data does not suggest an extraterrestrial origin.


"i think that the sizzle around this comet even if it's about aliens is a good thing i think that it is uh bringing more curious minds to wondering about nature and you know personally i my own ramp to being a scientist you know in my youth included exploring the paranormal exploring you know ghost stories and bigfoot and those sort of ideas they live in a similar part of the soul and mind right that part of curiosity exploring the unknown going for that which is really weird and different and i think that the attention that astronomy is able to generate which leads to people right becoming a part of this enterprise and this is the own ramp that gets us there so i'm all for it"

Dr. Stephanie Myllum views the public fascination with Comet 3I Atlas, even if driven by alien speculation, as beneficial. She explains that this curiosity about the unknown, similar to interests in the paranormal, can serve as an entry point for individuals to engage with astronomy. This attention, she believes, encourages more people to become involved in scientific exploration.

Resources

External Resources

Books

  • "The Golden Record" - Mentioned as a comparison to the International Space Station as a potential gift to aliens.

People

  • Dr. Stephanie Mielum - Astrochemist at NASA, studies comets and interstellar objects.
  • Dr. Hakeem Oluseyi - Astrophysicist, runs the Astronomical Society of the Pacific.
  • Flora Lewisman - Host of Science Friday.
  • Alex Honnold - Professional rock climber and founder of the Honnold Foundation.
  • Mark Ruffalo - Climate champion, guest on Planet Visionaries podcast.
  • Cristina Mittermeier - Biologist and photographer, guest on Planet Visionaries podcast.
  • Chris Tompkins - Conservationist, guest on Planet Visionaries podcast.
  • Michael - Listener from St. Louis with a question about the International Space Station.
  • Rusha O'Reedy - Producer of Science Friday.

Organizations & Institutions

  • NASA - Mentioned as the institution where Dr. Stephanie Mielum works.
  • Astronomical Society of the Pacific - Mentioned as the institution where Dr. Hakeem Oluseyi runs.
  • WNYC Studios - Mentioned as a supporter of Science Friday.
  • Alienware - Mentioned as a sponsor of Science Friday.
  • Intel - Mentioned in relation to Alienware's processors.
  • Yale University - Mentioned in relation to research on pleasure and intimacy.
  • Indiana University - Mentioned in relation to research on pleasure and intimacy.
  • Rolex Perpetual Planet Initiative - Mentioned as a partner for the Planet Visionaries podcast.
  • Honnold Foundation - Mentioned as founded by Alex Honnold.
  • GiveWell - Mentioned as a resource for finding cost-effective charitable programs.
  • AT&T - Mentioned as a supporter of Science Friday.
  • Root Metrics - Mentioned in relation to AT&T's network performance.

Websites & Online Resources

  • alienware.com/deals - Mentioned for savings on Alienware products.
  • sciencefriday.com/support - Mentioned for donating to Science Friday.
  • planetvisionaries.com - Mentioned as the podcast exploring conservation ideas.
  • givewell.org - Mentioned for finding cost-effective charitable programs.
  • omgs.com - Mentioned as a website with research on pleasure and intimacy.

Podcasts & Audio

  • Science Friday - The podcast hosting the discussion.
  • Planet Visionaries - A podcast created in partnership with the Rolex Perpetual Planet Initiative.

Other Resources

  • Comet 3I/Atlas - Interstellar object discussed for its close approach and composition.
  • International Space Station (ISS) - Discussed in terms of its deorbiting options.
  • Graveyard orbits - Mentioned as a potential option for the ISS.
  • Debris risk - Mentioned as a concern with graveyard orbits.
  • Controlled deorbiting - Mentioned as the selected option for the ISS.
  • Asteroid Psyche - Mentioned as a hypothetical resource for funding future space endeavors.

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