who was the first to observe it?
The first spectra of Uranus were observed through a prism in 1869 and 1871 by Angelo Secchi and William Huggins
Atmosphere of Uranus
. The first spectra of Uranus were observed through a prism in 1869 and 1871 by Angelo Secchi and William Huggins, who found a number of broad dark bands, which they were unable to identify.
what is uranus's atmosphere made out of The atmosphere of Uranus is composed primarily of hydrogen and helium.
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Atmosphere of Uranus [SEP] Observation and exploration
Although there is no well-defined solid surface within Uranus's interior, the outermost part of Uranus's gaseous envelope (the region accessible to remote sensing) is called its atmosphere. Remote sensing capability extends down to roughly 300 km below the 1 bar level, with a corresponding pressure around 100 bar and temperature of 320 K. The observational history of the Uranian atmosphere is long and full of error and frustration. Uranus is a relatively faint object, and its visible angular diameter is smaller than 5″. The first spectra of Uranus were observed through a prism in 1869 and 1871 by Angelo Secchi and William Huggins, who found a number of broad dark bands, which they were unable to identify.