Artwork for podcast Acute Astronomy
Time Travel and Lightyears
16th November 2023 • Acute Astronomy • Hopewell Valley Student Publications Network
00:00:00 00:03:55

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When you gaze up at the night sky, you're not just seeing stars and constellations, you're witnessing a journey through time. Light, traveling incredibly fast, carries information from distant celestial objects to our eyes. For instance, when you view the sun, you're actually seeing it as it was 8 minutes ago because that's how long it takes for its light to reach us. Similarly, the famous constellation Orion, sitting about 1260 light years away, offers a glimpse into the past. The light from Orion that reaches us today began its journey 1260 years ago, revealing how it appeared all those years in the past. This incredible phenomenon extends further—imagine being an extraterrestrial observing Earth from 75 million light years away; you'd witness the ancient world of dinosaurs because light takes immense time to traverse vast distances. Thus, peering into the cosmos isn't just about seeing stars; it's a voyage across time, unveiling the distant past in the present moment.