31-03-2025
Looking for the Undetectable. Interferometry and Gravitational Waves
The light of the cosmos that we perceive
URLwith bare eyes is only a tiny example
of what astronomical objects produce.
It all starts with radio waves, it goes
through infrared—which we feel as
heat on our skin, through the rainbow—from red
to blue, and on through ultraviolet and X-rays
to gamma rays. Most of this spectrum does not
penetrate the atmosphere and is generated by
nuclear reactions and accelerated particles that
emit light in all these colors. Its observation
with different instruments allows us to research
phenomena in a diversity of temperature and
density conditions: from thousandths of a degree
over absolute zero to hundreds of millions of
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