008Zulu t1_jdt012q wrote
Reply to comment by Burninator05 in Scientists discover supermassive black hole that now faces Earth by Bcap2219
We can detect bursts of radiation from stellar objects, sometimes with millions of years advance.
bunnnythor t1_jdt2myi wrote
How? Radiation propagates at light speed, doesn’t it?
knotacylon t1_jdt6o20 wrote
No, we detect the remnants of these bursts that happened millions of years ago that are just now reaching us
Illithid_Substances t1_jdtxm83 wrote
What do you mean "millions of years advance"? We usually see things millions of years after they happen, and never before
008Zulu t1_jdu6ftu wrote
Meant to say away, no idea why I typed advance.
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