Many astronomers are demanding a space telescope because terrestrial telescopes
are unable to detect objects on the other side of the Sun.
Using sensors that analyse the shape of light waves from either natural or artificial guide stars--the latter produced by focusing a set of lasers into the earth's atmosphere--and sophisticated deformable computer-controlled mirrors, terrestrial telescopes
can correct for the distortion caused by the turbulence of the Earth's atmosphere in real time, enabling significantly sharper images.
The first pulsar readings proved the efficiency of HESS for inter-stellar observations from terrestrial telescopes
The comet was not visible to any terrestrial telescopes
due to its proximity to the sun but several spacecraft routinely observe the solar atmosphere and the comet was to be visible to them.
Even the professional scientist-critics commended the book, which offers both a contemporary tour of black holes for the nonscientist and an interesting chronicle of Scharf's personal research, from using data from the largest terrestrial telescopes
to collaborating with other astrophysicists to admitting what we still don't know (a lot).
Showing "before and after" photos as proof, he described how specialized laser beams integrated with waveform sensors, high-speed processors, and deformable mirrors could compensate for the atmospheric turbulence that had heretofore blurred the vision of the world's most powerful terrestrial telescopes
. Since that revelation, all new large telescopes have incorporated this adaptive-optics technology, and many older ones have been retrofitted.
On one had, it makes the air so thin and bereft of humidity that it is the ideal location for terrestrial telescopes
, allowing us, Guzman remarks, to "read the vast open book of memory, page by page."