SpaceTime with Stuart Gary Gary - Series 29 Episode 3

In this episode of SpaceTime , we delve into the latest discoveries in astrophysics and the challenges faced by space agencies worldwide.

Ancient Supernova Offers Clues to Dark Energy

Astronomers have made significant strides in understanding dark energy, the enigmatic force driving the universe's accelerated expansion. A newly observed supernova, located 10 billion light years away, has been gravitationally lensed by a foreground galaxy, allowing scientists to analyze multiple images of the same explosion. This phenomenon could help determine the Hubble constant, shedding light on the universe's expansion rate and its ultimate fate, which ranges from a Big Crunch to a Big Rip.

Sterile Neutrino Hypothesis Nearly Ruled Out

After over a decade of research, scientists have come close to ruling out the existence of the sterile neutrino, a proposed particle that could explain anomalous neutrino behavior. Data from the Micro BooNE experiment at Fermilab has shown no signs of sterile neutrinos, providing a pivotal moment in particle physics that narrows the search for new theories beyond the standard model.

China's Reusable Rocket Setback

China's efforts to develop a reusable rocket faced a significant blow as its Long March 12A failed on its maiden flight. Although the rocket's first and second stages performed as expected, the first stage failed to return successfully, highlighting the challenges in achieving reusability akin to SpaceX's Falcon 9. This setback underscores the competitive nature of the global space industry as China strives to enhance its capabilities.

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✍️ Episode References

Astrophysical Letters

Nature

Fermilab Reports

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(00:00:00) This is Space Time Series 29, Episode 3 for broadcast on 7 January 2026

(00:00:47) Discovering dark energy through a unique supernova

(00:12:30) Ruling out the sterile neutrino hypothesis

(00:20:10) China's reusable rocket faces a major setback

(00:25:00) Science report: Climate change impacts, endangered species, and digital privacy concerns

Episode link: https://play.headliner.app/episode/31007030?utm_source=youtube