I'm happy to present a new compact crosswords puzzle
You know what to do.
Across words: 5 letters each
1: Physicist without aliens
2: Pen name
3: Warp speed physician
Down words: 3 letters each
1: Very advanced factory
2: British band
3: Obsolete Asian coin
4: WEST
5: A place in Space
Update: Some hints may helpful.
Across 1: is a real person
Across 3: is a fictional person
Down 3: Obsolete Japanese coin
Down 4: is a real person of some fame
Down 5: is a real place (in space)