Catastrophic event from space/earth that humanity are able to see it coming
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Assuming current technology, is there any catastrophic event from space/earth that humanity are able to see/detect/calculated it coming. (Would prefer a space event but earth ones are welcomed)
This event should be able to wipe out at least 90% of living things.
- We are able to detect this event 1 year before it strikes
OR
- We are able to detect this event 5 year before it strikes
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