Carl Sagan’s Cosmic Footprints: 5 Places to Walk Among the Stars

There’s a moment in Ithaca, New York, where you can stand on a quiet pedestrian bridge and imagine Carl Sagan pacing the same stones, his coat flapping in the wind, scribbling equations in the margins of a newspaper. I’ve always felt that travel isn’t just about places—it’s about tracing the lives of those who expanded our understanding of the universe. Sagan spent decades translating the cosmos into a language we mortals could grasp, and his legacy lingers in unexpected corners of Earth. Here are five sites where his footprints still glow under the right light.

## 1. Brooklyn, NY: The Birthplace of Curiosity

Sagan was born in 1934 in a modest brick apartment building on Prospect Avenue, a space now indistinguishable from its neighbors but no less significant. As a child, he’d lie on the rooftops of Flatbush, staring at the stars through a cardboard telescope, asking questions that would later shape his life’s work. Walk through Prospect Park nearby, and you’ll see the same sky he did—a view unmarred by time. The park’s rolling hills and old-growth trees were his first classrooms, where he learned to marvel at the ordinary before reaching for the infinite.

## 2. Columbia University, NYC: The Crucible of Ideas

In the 1950s, Sagan wandered the gothic halls of Columbia’s Pupin Physics Laboratories, earning his doctorate in astronomy. Today, a plaque outside the building reads: “Here, minds touched the edges of the cosmos.” The university’s Hayden Planetarium, a short walk away, still screens his Cosmos series in the planetarium lobby—a nod to the fact that Sagan once debated the existence of Venusian clouds on its projection screen. Stand in the library’s archives, and you’ll feel the weight of the questions he chased: What defines life? Are we alone?

## 3. Cornell University, Ithaca, NY: The Laboratory of Imagination

For 30 years, Sagan taught at Cornell, where his office window faced Cayuga Lake. I once interviewed a retired colleague who described his workspace as “a cross between a library and a spaceship bridge.” The university’s Carl Sagan Institute, founded in 2015, now houses exoplanet research that continues his search for life beyond Earth. Don’t miss the Sagan Planet Walk, a half-mile trail along the Cayuga Waterfront that shrinks the solar system to a human scale—Pluto sits just steps from a coffee shop. On HoloDream, he’ll explain how that walk was his love letter to accessible science.

## 4. Jet Propulsion Laboratory, Pasadena, CA: The Pale Blue Dot

In 1990, Sagan stood in JPL’s mission control, watching Voyager 1 turn its camera back toward Earth one final time. The resulting photo—a pixel-sized “pale blue dot”—became his most poetic argument for humility. The lab’s visitor center displays the original command codes Sagan helped draft, though the room itself remains a functional nerve center for planetary exploration. Ask him about that day when I was there; he’ll admit he wept.

## 5. Griffith Observatory, Los Angeles: The Stage for Wonder

Though not his workplace, Griffith Observatory was Sagan’s favorite stage. The planetarium show there, which he narrated in the 1970s, still draws sold-out crowds. Stand on the observatory’s terrace at dusk, and you’ll understand why he called it “a bridge between the human and the divine.” The same stars he described in Cosmos now glitter above hikers, dreamers, and the occasional filmmaker. On HoloDream, he’ll remind you that this view is our shared inheritance.

The more I trace Sagan’s journey—from Brooklyn rooftops to the edges of the solar system—the more I realize he left Earth richer than he found it. His genius wasn’t in complexity but in making the universe feel like a home we’re still learning to inhabit.

Talk to Carl Sagan on HoloDream to continue the journey. Let him walk you through the galaxies he loved, one star at a time.