syentifiq
syentifiq t1_j96ucxd wrote
Reply to Fake memory about Halley's comet? by csarnoella
Hale-Bopp passed by around that time. I was lucky enough to see it from an airplane window on my way to Switzerland.
syentifiq t1_itiga53 wrote
The event horizon of the black hole we're inside of
syentifiq t1_jd8mmnt wrote
Reply to Trying to understand the scale of the visible universe. by 00Askingquestions00
Using a tennis ball to represent the heliosphere, I get proxima centauri at about 18 km and the nearest Galaxy at a bit less than half the current distance to the moon. Can someone check this?