Are We Missing Alien Signals? Space Weather, Brain Changes and the Mars Life Question

Are We Missing Alien Signals? Space Weather, Brain Changes and the Mars Life Question

Are we missing alien signals because of cosmic interference? Has spaceflight been quietly rearranging astronauts' brains? And did life on Earth actually start on Mars? We cover all of this and more in today's jam-packed episode of Astronomy Daily.

In this episode (S05E58 — March 9, 2026):
• 00:00 — Intro
• 01:30 — Story 1: Why SETI May Be Missing Alien Signals — space weather around other stars could be smearing narrowband radio transmissions beyond our detectors' reach
• 06:00 — Story 2: Spaceflight Deforms the Brain — new MRI study of 26 astronauts reveals the brain physically shifts and warps inside the skull in microgravity
• 11:00 — Story 3: Baikonur's Dramatic Pad Rescue — 150+ workers, 250m of welding, and spare parts from the 1970s. Roscosmos fixes their launch pad in record time
• 15:30 — Story 4: Earth's Distance From the Sun Alters Seasons — an overlooked orbital effect has been shaping El Niño and global weather for millennia
• 20:00 — Story 5: Did Earth Life Start on Mars? — how asteroid impacts could allow microbes to planet-hop, and what that means for the origin of life on Earth
• 24:30 — Outro

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