chechomsky t1_j4lhozv wrote on January 16, 2023 at 3:49 PM Reply to comment by IAmAPhysicsGuy in How do we know that we are in a certain place inside our galaxy? and how do we know how big it is just by looking at the cross section we are in? by friday_panda Our galactic “year” (time it takes for the sun to revolve around the center of the galaxy) is 230 million earth years. Is there enough rotation (I assume about 50 years of data) for us to use parallax to get a sense of our location? Permalink Parent 18
chechomsky t1_j4lhozv wrote
Reply to comment by IAmAPhysicsGuy in How do we know that we are in a certain place inside our galaxy? and how do we know how big it is just by looking at the cross section we are in? by friday_panda
Our galactic “year” (time it takes for the sun to revolve around the center of the galaxy) is 230 million earth years. Is there enough rotation (I assume about 50 years of data) for us to use parallax to get a sense of our location?