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Do we know definitively that there are no other planets in this system? The presence of a large, Jupiter-sized planet in a system is thought to be helpful for
by kristianc 10y ago
Do we know definitively that there are no other planets in this system?
The presence of a large, Jupiter-sized planet in a system is thought to be helpful for deflecting asteroid impacts. Obviously we are talking 'to scale' given TRAPPIST-1 itself is around the size of Jupiter!
The more we learn about this system is going to be fascinating though - the supposed inward migration of these planets may even help us understand more about how our own system formed.
- semaphoreP 10y agoI don't think we know for sure, but it'd be hard to place another star in the system and have it a) not disrupt the planets and b) go unnoticed as the primary star is so faint.
- pshposh 10y agoIs it possible there isn't an asteroid belt to be concerned about?