The image on the right
(Ref)
shows the planet
Uranus, the
first planet discovered in modern times.
It was
found
accidentally by William Herschel while he was
searching
the sky with a telescope in 1781.
It had actually been seen many times before but dismissed as a star.
Uranus is largely hydrogen and helium, but (like Neptune)
contains higher proportions of heavy
elements than Jupiter or Saturn, and is covered with clouds.
Our only direct spacecraft observation of
Uranus came from Voyager 2 in 1986.