Hubble Sees Possible Runaway Black Hole Creating a Trail of Stars

Re:Hubble Sees Possible Runaway Black Hole Creating a Trail ... by yieldcrv on Friday April 07, 2023 @12:07AM (#35477929)

also, how long does it stay emerged

Was it this billion years or that billion years

probability of our experience matching another planet’s experience in the same time frame is low

[ Parent | on HN ]

Re:Hubble Sees Possible Runaway Black Hole Creating a Trail ... by icambron on Friday April 07, 2023 @12:09AM (#35477946)

There haven't been that many billion-year periods. The big bang was 13.7 billion years ago.

[ Parent | on HN ]

Re:Hubble Sees Possible Runaway Black Hole Creating a Trail ... by chasil on Friday April 07, 2023 @01:20AM (#35478309)

Emergence of eukaryotes specifically entailed aerobic respiration of the mitochondria, which was a massive increase of chemical energy (when glucose and oxygen are present).

Chloroplasts enabled direct harvest of photons from our parent star.

We are actually older than the plants.

These are going to leave a signature in the gas of an exoplanet, if they happen.

[ Parent | on HN ]

Re:Hubble Sees Possible Runaway Black Hole Creating a Trail ... by scotty79 on Friday April 07, 2023 @03:13AM (#35479006)

Oxygen on our planet was a wasteproduct of life before life learned how to use it.

If some planet had oxygen rich atmosphere from the get go it might have sped up the evolution of life by a billion years or few.

[ Parent | on HN ]