Astronomers recently caught the grisly sight of an exoplanet being devoured by its star, in a preview of what will eventually happen to the Earth.
The sun-like star is located within our galaxy, around 12,000 light-years away, and has puffed up into an end-of-life state called a red giant. As it grows, it expands outward, which is how it was able to swallow the Jupiter-sized planet that had been in orbit around it.
The researchers were able to spot the event because of the distinctive brightening pattern of the star, which is similar to what we can expect will eventually happen to our sun. “We are seeing the future of the Earth,” said lead author of the research, Kishalay De of the Massachusetts Institute of Technology , in a statement.
Observing this event, which is the first of its kind to be seen as it happened, required the use of several astronomy facilities. The initial bright flash, which was caused by the planet being pulled into the star’s atmosphere, was observed by the Zwicky Transient Facility at the Palomar Observatory in California. It watches the sky for brief, transient events.
Related They also used the Keck Observatory and Gemini South telescope to observe the longeduration, low-energy event and confirm that the flash was indeed caused by the star swallowing the planet. This shows the kind of observations that are possible now that we have telescopes observing the sky for these brief events which can last just a few weeks.
Related Videos “I think there’s something pretty remarkable about these results that speaks to the transience of our existence,” said co-author Ryan Lau. “After the billions of years that span the lifetime of our solar system, our own end stages will likely conclude in a final flash that lasts only a few months.”
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