It’s not the explosion, it’s the lag time.
A billion years ago, a star died.

Summary
A billion years after a star's death, its explosion is observable today, emphasizing the concept that it's not the explosion itself but the time it takes for its light to reach us.
Abstract
The article discusses the distant event of a star's demise that occurred a billion years ago. Despite the vast time span, the light from this cosmic explosion has only recently reached Earth, allowing contemporary astronomers to witness the event. This phenomenon underscores the relationship between cosmic events and the time it takes for their effects to be perceived across the vastness of space. The article likely delves into the implications of this time lag for our understanding of the universe, the life cycle of stars, and the advancements in technology that enable us to observe such ancient cosmic occurrences.
Opinions
A billion years ago, a star died.

Tim Andersen, Ph.D.Last week’s article got me thinking about time inversion and I looked more carefully into arrow of time reversal experiments like this one…
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