Bedtime Astronomy

Japan’s VERTECS nanosatellite has completed its initial tests and begun routine science operations following its June 2026 launch. After confirming its systems and capturing its first visible-light images of deep-space targets, the satellite is ready to investigate extragalactic background radiation.

Over its planned one-year mission, VERTECS will study the faint light associated with distant galaxies, helping astronomers investigate how stars and galaxies formed and uncover new clues about the universe’s history.

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This episode includes AI-generated content.

Using NASA’s James Webb Space Telescope, astronomers have discovered that the atmosphere of the giant exoplanet WASP-17b is surprisingly asymmetrical.

By tracking starlight passing through its atmosphere, researchers found that powerful winds redistribute heat, causing its evening side to expand more than its cooler morning side. This innovative technique offers a new way to map alien weather in three dimensions, potentially transforming how scientists study the climates of thousands of distant worlds

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This episode includes AI-generated content.

Astronomers using the James Webb Space Telescope may have captured a supernova just days after its explosion, when the universe was only a fraction of its current age.

Known as AT 2026abck, the distant event appears unusually hot and luminous, challenging expectations for ordinary stellar explosions. Could this be a rare supernova revealing how massive stars died in the early universe?

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This episode includes AI-generated content.

Could dark energy change over time? A new approach to teleparallel gravity suggests that dark energy may have begun with negative density in the early universe before becoming positive billions of years later.

The theory could help explain the Hubble tension while remaining consistent with solar-system gravity tests. But can it survive a full comparison with DESI data? The answer could reshape our understanding of cosmic expansion.

Thank you for listening to Bedtime Astronomy — your guide to the cosmos. New episodes on space exploration, NASA missions & the latest astronomy breakthroughs.

This episode includes AI-generated content.

How can scientists test what happened moments after the Big Bang? By studying distant, metal-poor galaxies, researchers measured primordial helium at approximately 24.58% of the early universe’s mass, closely matching predictions from cosmic microwave background observations.

Comparisons with modern measurements also suggest that stars have produced around 10% of today’s cosmic helium, offering new insights into how the universe evolved from its earliest moments.

Thank you for listening to Bedtime Astronomy — your guide to the cosmos. New episodes on space exploration, NASA missions & the latest astronomy breakthroughs.

This episode includes AI-generated content.