ExoHugh, 23 days ago to random

I feel like 75% of #exoplanet astronomers get confused by planets in binary systems for some reason...
The simplest configuration is planets orbiting stars which also have a stellar companion. A large fraction of star systems are wide binaries so this is very common, and honestly not that interesting. Imagine if the Sun had an M-dwarf instead of #Planet9. Both stars could even host planets (unless the stellar companion is particularly close/large). Examples: Kepler-444, HD80606, Proxima Cen, etc

Nonog, 7 months ago to random

Could Modified Gravity Be the Answer to Planet 9?
Modified Newtonian Dynamics (or MOND) theory has already been proven accurate for things like understanding galactic rotation. But what about using it closer to home?
https://www.universetoday.com/163533/could-modified-gravity-be-the-answer-to-planet-9/ #ModifiedGravity #Planet9? #KuiperBeltObjects #MOND

heiseonline, 10 months ago to random German

#Verpasstodon

Simulationen: Weiterer Riesenplanet am äußersten Rand des Sonnensystems möglich

Über einen möglichen neunten Planeten am Rand des Sonnensystems wird seit Jahren spekuliert. Nun halten Forscher gar einen riesigen zehnten für möglich.

https://www.heise.de/news/Aus-dem-Sonnensystem-gekickt-Womoeglich-zehnter-Planet-in-Oortscher-Wolke-9201073.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege

#Astronomie #Astrophysik #OortscheWolke #Planet10 #Planet9 #Planetenentstehung #Planetenforschung #Sonnensystem