Nickel and Urea May Explain Why Earth’s Oxygen Took So Long to Rise
In this episode, we uncover new research from Okayama University that sheds light on the delayed Great Oxidation Event.Scientists found that early ocean levels of nickel and urea controlled the growth of oxygen-producing cyanobacteria—sometimes fueling them, sometimes holding them back. When these elements declined, Earth’s atmosphere finally filled with oxygen, reshaping the planet and offering clues for spotting life on other worlds.
--------
28:09
--------
28:09
AI Breakthrough: Gemini Finds Real Cosmic Signals with Minimal Data
--------
26:33
--------
26:33
Is Dark Matter an Illusion? New Study Challenges the Foundations of Cosmology
A new study from the University of Ottawa is shaking up our understanding of the universe. Professor Rajendra Gupta suggests that dark matter and dark energy might not exist at all — instead, the forces of nature themselves are slowly weakening as the universe expands.This idea could explain cosmic mysteries — like why galaxies spin so fast or why the universe is expanding so rapidly — without invoking any unknown particles. Published in Galaxies, the research even suggests the universe may be nearly twice as old as we thought.If true, this theory could mean that decades of dark matter searches have been chasing a mirage — and that the key to the cosmos lies in the changing fabric of physics itself.
--------
28:11
--------
28:11
NASA’s IMAP Mission: Mapping the Sun’s Heliosphere
In this episode, we dive into NASA’s IMAP mission—the Interstellar Mapping and Acceleration Probe—set to study the heliosphere, the magnetic bubble that shields our solar system.Led in part by University of Delaware scientist William H. Matthaeus, IMAP will orbit at Lagrange Point 1 to analyze solar wind, plasma, and magnetic fields. Joined by the Carruthers Geocorona Observatory and NOAA’s Space Weather Follow On, this mission will expand our view of how the sun interacts with interstellar space.
--------
27:56
--------
27:56
Mapping the Cosmos: Euclid’s Flagship Simulation
Scientists have built the largest galaxy simulation ever—3.4 billion galaxies and four trillion particles—to prepare for ESA’s Euclid mission. This cosmic mock-up will help decode dark energy, map the universe in 3D, and test whether our cosmological model truly holds.
Welcome Bedtime Astronomy Podcast. We invite you to unwind and explore the wonders of the universe before drifting off into a peaceful slumber.Join us as we take you on a soothing journey through the cosmos, sharing captivating stories about stars, planets, galaxies, and celestial phenomena.Let's go through the mysteries of the night sky, whether you're a seasoned stargazer or simply curious about the cosmos, our bedtime astronomy podcast promises to inspire wonder, spark imagination.AI Sound
USA