Remove

1. Horologium
2. 2001

What

1. Columbia (10)
2. Hubble Space T … (10)
3. NICMOS (10)
4. Camera 2 (7)

Where

1. Washington, D. … (10)
2. Washington (1)
3. Milky Way Galax … (1)
4. California (1)
5. Israel (1)

When

1. 1999 (10)
2. 1998 (10)
3. May 31, 2001 (10)
4. 1993 (10)