Hints of Alien Life Detected, Early Universe Spiral Galaxy Uncovered

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Hints of Alien Life, a Galactic Mystery, and Juno's Safe Mode Incident

In this episode of SpaceTime, we explore groundbreaking revelations suggesting the potential for alien life beyond Earth. Using NASA's Webb Space Telescope, astronomers have detected chemical signatures of dimethyl sulfide and dimethyl disulfide in the atmosphere of the exoplanet K2 18 b, a sub-Neptune world located 124 light years away in the habitable zone of its host star. While these findings are incredibly promising, researchers urge caution as they work to confirm these biosignatures through further observations.

A Surprising Spiral Galaxy from the Early Universe

Next, we dive into the discovery of a surprisingly large spiral galaxy dating back 11.4 billion years, which challenges current models of galaxy formation. This massive galaxy, dubbed the "Big Wheel," is three times larger than expected for its time, prompting astronomers to rethink how galaxies can grow and evolve in the early universe. The implications of this finding could reshape our understanding of cosmic structure and formation processes.

NASA's Juno Spacecraft in Safe Mode

Additionally, we discuss a recent anomaly that forced NASA's Juno spacecraft to enter safe mode during a close flyby of Jupiter. The spacecraft's precautionary measures allowed it to protect its systems and continue diagnostics, ensuring the mission's ongoing success as it gathers vital data about the gas giant and its moons.

00:00 Space Time Series 28 Episode 48 for broadcast on 21 April 2025

00:49 Potential biosignatures detected on K2 18 b

06:30 Implications for the search for extraterrestrial life

12:15 Discovery of an ancient spiral galaxy in the early universe

18:00 Challenges to current galaxy formation models

22:45 Juno spacecraft enters safe mode after anomaly

27:00 Summary of recent astronomical discoveries

30:15 Science report: Health benefits of sauerkraut and lunar dust solar panels

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✍️ Episode References

Astrophysical Journal Letters

https://iopscience.iop.org/journal/0004-637X (https://iopscience.iop.org/journal/0004-637X)

Nature Astronomy

https://www.nature.com/nature-astronomy/ (https://www.nature.com/nature-astronomy/)

Applied and Environmental Microbiology

https://aem.asm.org/ (https://aem.asm.org/)

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Episode link: https://play.headliner.app/episode/26709265?utm_source=youtube

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