SpaceTime Series 28 Episode 23The Astronomy, Space and Science News PodcastSnowball Earth Evidence, Blue Origin's Parachute Failure, and the Moon Illusion Explained
In this episode of SpaceTime, we dive into groundbreaking geological research that provides compelling evidence for the Snowball Earth hypothesis, suggesting that glaciers may have covered the planet from pole to pole hundreds of millions of years ago. This research reveals insights into Earth's climatic history and the emergence of multicellular life following this extreme glaciation event.
Blue Origin's Lunar Gravity MissionWe also discuss the recent Blue Origin mission, where the New Shepard spacecraft experienced a parachute failure during a lunar gravity simulation flight. Despite the malfunction, mission managers confirm that the capsule was designed to land safely with two parachutes, and investigations are underway to understand the issue.
The Moon Illusion: Why Does It Appear Larger on the Horizon?Additionally, we explore the fascinating phenomenon known as the Moon illusion, which causes the Moon to appear larger when it is near the horizon compared to when it is high in the sky. We delve into the psychological and perceptual factors that contribute to this optical illusion, despite the Moon's actual size remaining constant.
00:00 Space Time Series 28 Episode 23 for broadcast on 21 February 2025
00:49 Evidence supporting the Snowball Earth hypothesis
06:30 Implications for Earth's climatic history
12:15 Blue Origin's lunar gravity mission details
18:00 Analysis of parachute failure during descent
22:45 The Moon illusion and its psychological explanations
27:00 Understanding optical illusions in astronomy
30:15 The self-domestication of wolves and its implications
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✍️ Episode ReferencesNASA
https://www.nasa.gov
Proceedings of the National Academy of Sciences
https://www.pnas.org
New England Journal of Medicine
https://www.nejm.org
Royal Society B
https://royalsocietypublishing.org/journal/rspb
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