Remove

1. Earth
2. I Zwicky 18

What

1. Advanced Camera … (2)
2. Hubble Space Te … (2)
3. Aura (2)
4. Ursa Major (2)

Where

1. Milky Way Galax … (2)
2. Washington, D.C … (2)
3. Italy (2)

When

1. 2005 (2)
2. 2006 (2)
3. 2007 (2)
4. January 2006 (2)
5. October 2005 (2)