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If that is the threshold for discovering exoplanets, haven't we already found Planet Nine since we definetly have detected the planet's effects?
by widforss 5y ago
If that is the threshold for discovering exoplanets, haven't we already found Planet Nine since we definetly have detected the planet's effects?
- raxxorrax 5y agoGood objection actually. We could say that we found exoplanets visually, can determine its mass and size and therefore its density and make careful prediction about its characteristics from that, which is probably nothing more than an educated guess. Here we just found its gravitational effect.