A cataclysmic explosion of a massive star.
We’re watching the reruns today.

Summary
The web content discusses a cataclysmic stellar explosion observed today that occurred a billion years ago.
Abstract
The article provides a glimpse into the cosmic event of a massive star's explosion, which astronomers are observing in the present day. Despite the event happening a billion years ago, the light from the explosion has only now reached Earth, allowing scientists to witness what is described as a "once in a lifetime" occurrence. The content is accompanied by an evocative image of the cosmic event, captured by the Hubble Space Telescope, and invites readers to explore further by visiting the provided link to a more detailed article on Medium.
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