  The observations of the solar F-corona from space are reviewed emphasizing
the 25 years of continuous monitoring achieved by the LASCO-C2 and C3
coronagraphs. Our work includes images obtained by the Clementine cameras, and
the STEREO/SECCHI/HI-1A and PSP/WISPR heliospheric imagers. The characteristic
radiance profiles along the equatorial and polar directions follow power laws
in the 5{\deg}-50{\deg} range of elongation, with constant power exponents of
-2.33 and -2.55. Both profiles connect extremely well to the corresponding
standard profiles of the zodiacal light. The LASCO equatorial profile exhibits
a shoulder implying a 17% decrease of the radiance within 10Rsun that may be
explained by the disappearance of organic materials within 0.3 AU. LASCO
detected for the first time a secular variation of the F-corona, an increase at
a rate of 0.46% per year of the integrated radiance in the LASCO-C3 FoV. This
is likely the first observational evidence of the role of collisions in the
inner zodiacal cloud. A composite of C2 and C3 images produced the LASCO
reference map of the radiance of the F-corona from 2 to 30Rsun and, by
combining with ground-based measurements, the LASCO extended map from 1 to 6
Rsun. The plane of symmetry of the inner zodiacal cloud is strongly warped, its
inclination increasing towards the planes of the inner planets and ultimately
the solar equator. In contrast, its longitude of ascending node is found to be
constant and equal to 87.6{\deg}. LASCO did not detect any small-scale
structures such as putative rings occasionally reported during solar eclipses.
The outer border of the depletion zone where interplanetary dust particles
start to be affected by sublimation appears well constrained at 19Rsun. This
zone extends down to 5Rsun, thus defining the boundary of the dust-free zone
where the most refractory materials, likely moderately absorbing silicates,
disappear.
