Because astronomical telescopes are so sensitive, we often find observatories located on mountaintops far from cities.
(astronomical telescopes; are; so sensitive) (we; find; observatories located on mountaintops far from cities; T:often) (observatories; located; L:on mountaintops far from cities)
astronomical telescopes we observatories
are find located
so sensitive
observatories located on mountaintops far from cities T:often
L:on mountaintops far from cities