4 ms·
Most likely minimal? The mass is low. I am, however, reminded that the orbit of the asteroid Juno (~250km diameter) permanently changed in 1839 without an obvi
by jandrewrogers 2mo ago
Most likely minimal? The mass is low.
I am, however, reminded that the orbit of the asteroid Juno (~250km diameter) permanently changed in 1839 without an obvious cause.
- shagie 2mo agoHow to spot tiny black holes that might pass through the solar system - https://www.sciencenews.org/article/primordial-black-holes-solar-system https://www.sciencenews.org/article/primordial-black-holes-s... And the referenced papers: Probing primordial black holes and dark matter clumps in the Solar System with gravimeter and Global Navigation Satellite Systems networks - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.063029 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.0... Close encounters of the primordial kind: A new observable for primordial black holes as dark matter - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.063533 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.0... And the PBS Spacetime: How Many Black Holes Are In The Solar System? - https://youtu.be/wh75ubECL8I https://youtu.be/wh75ubECL8I
- SoftTalker 2mo agoWouldn't low-mass primordial black holes have evaporated by now?
- jfengel 2mo agoDepends on what "low mass" means. An earth-mass black hole lasts 10^50 years. A black hole the mass of Mount Everest lasts 10^21 years. Black holes on the order of metric tons would have evaporated by now. But primordial black holes can come in any size, and there is a vast range of them that will exist much longer than the universe has already existed.
- Tuna-Fish 2mo agoNote that the orbital perturbation of Juno in 1839 was of rather low magnitude, and could have been caused by an asteroid as small as ~1km diameter. Based on current models, there are potentially more than a million rocks that big in the belt still undiscovered.