Starship Asterisk*

Some where it must be written in great scientific detail, but simply, why are some or most galaxies pancake or disk shaped? Especially, if they are born as a result of an explosion, why did the resulting matter not go just everywhere or every direction? Thanks for answering these questions for those...

Thanks to the people who got this fantastic shot.

Thanks for your replies.

And, in addition to the meters and feet used to locate points of interest, the word "sol" or is it an abbreviation, is also included. What could sol mean?

How do the scientist who labeled this panorama of Mars know the heights of mountains or hills? On earth, we reference our ocean’s sea level. Is there a sea level like reference on Mars?