Alex McColgan
speaker
29,301 appearances
104 recordings
1 series
first heard Nov 2024
last heard 6d ago
Alex McColgan’s voice in public audio — every appearance, attributed to the second.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 68 in all, peaking in Aug 2026 with 11.
Appearances
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Mercury is a planet full of contradictions.
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How can a rocky world so close to the sun harbor some of the coldest places in the solar system?
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How can the closest planet to us, on average, have an orbit harder for us to send probes into than Jupiter's?
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And how can a planet that looks this dead on the surface be geologically active?
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In many ways, Mercury makes no sense.
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But that might be about to change.
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As Beppi Colombo prepares to enter into orbit around Mercury after not one or two, but six flybys, it's time to take stock of what we've learned about this strange world over the last few years, and start to unravel some of those mysteries.
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And it's a good thing too, because this small, scorched planet may be our key to understanding other rocky planets across the galaxy and beyond.
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I'm Alex McCulgan, and you're watching Astro.
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Join me today as we uncover the secrets hiding in Mercury's strange craters.
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Explore how its magnetic field could be influenced by diamonds.
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And reveal why this minuscule planet in our own backyard could help us understand exoplanets thousands of light years away.
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We've only been to Mercury twice, making it the least visited terrestrial planet in our solar system.
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The first craft to visit was NASA's Mariner 10, which performed three flybys between 1974 and 1975.
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The second was at the start of the century with NASA's Messenger mission, which became the first probe to enter into orbit around the planet.
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And now Beppy Colombo is on its way.
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It has been threading its way across the inner solar system since twenty eighteen.
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Traversing more than 8.5 billion kilometers to get there.
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That's roughly twice the distance between Earth and Pluto at their closest.
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Showing 2301–2320 of 29,301 · page 116 of 1466
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