A visual exercise in distance scale
Pardon me if this has been posted before... a friend at work gave me the link today:
Secret Worlds: The Universe Within, from Florida State U. From 10 million light years to the Plank Length.
Pardon me if this has been posted before... a friend at work gave me the link today:
Secret Worlds: The Universe Within, from Florida State U. From 10 million light years to the Plank Length.