Today Sten will answer your questions about the sun and the solar system. Checking this out. We've never participated in a project like this before. You're right, the chat is still about 40 minutes away. Sten Odenwald will start answering questions at the top of the hour.
Web chats are a lot of fun.
I'm a teacher in a Middle School. I have some questions from my students. Please send you questions one at a time or it will take too long for Dr. Odenwald to answer them. There is no real evidence so far. The orbits of the outer planets are known to be 'chaotic' which can make it look like a large object might be perturbing their orbits.