All Of It (WNYC)

Episode: The Science Of The Moon, The Sun, And The Eclipse
Host: Kusha Navadar (in for Alison Stewart)
Guest: Rebecca Boyle, Science Journalist & Author
Date: April 8, 2024

Overview

This episode dives into the cultural, scientific, and emotional significance of solar eclipses—specifically, the solar eclipse occurring on April 8, 2024. Host Kusha Navadar is joined by science journalist and author Rebecca Boyle (joining live from the path of totality in Hot Springs, Arkansas) to explore humanity’s relationship with eclipses, their importance in advancing science, safety tips for viewing, and why these celestial events evoke such a profound reaction.

Key Discussion Points & Insights

1. Setting the Scene: The Day of the Eclipse [02:21–03:38]

• The episode airs just 45 minutes before the solar eclipse reaches the New York City area, where viewers will see an 87% coverage.
• The “path of totality”—the line from Dallas, TX, to Burlington, VT, where the sun will be fully obscured—sets up the context for why the eclipse is so special.
• Rebecca Boyle checks in from Hot Springs, Arkansas, in the path of totality, sharing that skies are clear, but it’s not yet dark:

  “We have an incredibly clear sky… it’s not going to be total here for another hour or so. It just looks like sunlight. As we get closer, it will look a little weird... kind of metallic.”
  — Rebecca Boyle [03:38]

2. Eclipses in the History of Science [04:13–06:29]

• Eclipses aren't just spectacles—they're historically pivotal for scientific discovery:

  • Newton’s Theory: Boyle recaps how the 1715 eclipse in England was predicted based on Newtonian gravity, with Edmund Halley (of comet fame) doing the mathematical work:

    “Edmund Halley is the one that actually did the math. This is kind of called Halley’s eclipse… it was really close. He was within a few minutes of the forecast...”
    — Rebecca Boyle [05:32]

  • Confirmation of Universal Laws: The event confirmed the predictive power of Newton’s theories—demonstrating gravity’s universality by accurately predicting the moon’s shadow.

3. Why Eclipses Matter for Science [06:29–08:46]

• Boyle explains what makes eclipses scientifically valuable:
  • Seeing the Sun’s Corona: Eclipses allow direct observation of the sun’s outer atmosphere (the corona) without specialized instruments.
  • Research Opportunities:

    “It’s a really unique opportunity to study not only the sun and the sun’s atmosphere but the Earth’s atmosphere, the movement of the moon, the orbit of the moon around the Earth, the movement of the sun across the sky, which means the rotation of the earth.”
    — Rebecca Boyle [06:41]

• Modern-Day Experiments:
  • NASA launches sounding rockets to observe atmospheric effects.
  • Studies of the impact on the energy grid (noting the role of solar power).
  • Telescopes across North America focus on the corona to study its properties during the rare few minutes of totality.

4. Listener Questions: Safety, History, and Folklore [08:46–12:40]

• Ancient Eye Damage?
  Caller Stephen asks if ancient observers suffered vision damage:

  “It’s unlikely that anybody just looked directly at it. You just sort of inherently don’t look at the sun.”
  — Rebecca Boyle [09:42]

  • The sun is “so bright… I think it’s really kind of hard to convey how many photons are coming out of that thing… we have evolved, luckily, to not want to look at that directly and harm ourselves.”

• Safe Viewing Without Glasses:

  • If not in the path of totality, don’t look at the sun at any partial phase.
  • Creative advice:

    “Go out and get a pasta colander… and look at the shadows… instead of a bunch of dots, you’ll see a bunch of crescents… or look under the leaves of a tree and you’ll see the same thing.”
    — Rebecca Boyle [11:52]

5. Eclipses and the Human Experience [12:40–13:55]

• Emotional Impact:
  • Boyle reflects on the transformative, almost mystical aspect of seeing an eclipse—how it can move viewers to tears or cheers:

    “It’s a really profound experience, and it’s a strange thing to witness the sun vanishing. Being banished from the daytime sky for even just a couple of minutes is very eerie and very otherworldly…”
    — Rebecca Boyle [12:50]

  • Recounting the 2017 eclipse:

    “People were cheering, people were crying, people were kind of, you know, hollering and flipping out.”
    — Rebecca Boyle [13:34]

  • Some become “eclipse chasers” to relive this unique sensation.

Notable Quotes & Timestamps

• On predicting eclipses:
  “Newtonian gravity is kind of the way that people used to predict this event... Halley is also the person who predicted the return of the comet that bears his name, Halley’s comet.”
  — Rebecca Boyle [05:08]

• On why not to look at the eclipse:
  “Even a small sliver of the sun is very powerful… you will burn your retinas and you will not feel that happening.”
  — Rebecca Boyle [11:52]

• On the psychological effect:
  “We can pinpoint down to the second when this is going to be taking place across the entire continent. It still is something that’s very, very transformative.”
  — Rebecca Boyle [12:55]

• On corona viewing safety:
  “During the total phase… it’s safe to look at the sun directly because it’s not there. You’re just seeing the corona. And the light of the corona is much more diffuse and much more kind of ghostly looking.”
  — Rebecca Boyle [10:39]

Important Segments (Timestamps)

• On-site update from Path of Totality: [03:38]
• History of Eclipses in Science (Newton, Halley): [04:57–06:29]
• What makes eclipses scientifically valuable: [06:29–08:46]
• Listener Q&A – Eye damage & folklore: [09:14–11:29]
• Viewing safety and creative alternatives: [11:29–12:40]
• Emotional/transformative power of eclipses: [12:40–13:55]

Tone & Atmosphere

The discussion is accessible, engaging, and richly informed, blending awe for the cosmos with practical advice and historic perspective. Rebecca Boyle’s tone is warm, enthusiastic, and clear; Kusha Navadar fosters inclusivity by welcoming listener participation and steering the conversation at a lively pace.

For more insights on eclipses or to revisit this moment, Rebecca Boyle’s book “Our Moon” explores our ongoing relationship with the moon and its celestial phenomena.