The Arecibo Observatory is the largest single aperture radio telescope in the world. The dish is 305 m (1001 ft) in diameter and the antenna is located 150 m (500 ft) above the dish.
It was constructed between 1960 and 1963 and got a significant upgrade in 1997
We have a record number of correct answers this week:
- Exsanguinator
- Ivar Bonsaksen
- Milosh, Serbia
- Bart Hoekstra
- Joel Zirmer
- Willem
- Robert Campbell
- Jan Depczynski
- Dennis S.
- hhgygy
- LawnBoy
- mehmet yaliman
- ACG
- Paul Franson
- Ben
- Skip
- lardarz
- Kate
- BroderUlf
- BobB
- David S
- Josh Muehe
- Joey
- Camargo, California
- realpetko
- Steve Jaycocks
- Neil
- Sarah G
- Andy McConnell
- Aaron Predeek
- Andy M, USA
- Doc Will
- Malcolm
- Max and Claire
- David Kozina
- Thomas Egan
- Pascal Gilbraith
- Max_Power
- Wappaw
- Bill Bass
- Kate S.
- Steven Roorda
- Jan_Vergouwe
- Michael T
- Ben-Greg
- Graham Foxall
- Per Svolsbru
- Andrew Smith
- skammeb
- Lori Simpson
- Enrique
- EJ