season and conditions result are not an single characteristic of Earth . Many objects in our Solar System experience changes as they move around the Sun and while seasons last for month on Earth , on other planet they can last decade . Space probe and the Hubble Space Telescope have kept an eye on the planet and the telescope has recently discovered some newfangled features of Uranus and Neptune .
In observation pull together over the last few year , Hubble has expanded our knowledge of Uranus ’ polar vortex and pick up a fresh dark storm on Neptune . Theseinterplanetary atmospheric condition forecastsare part of the Outer Planet Atmospheres Legacy ( OPAL ) , a long - condition labor that hopes to realize the decades - farsighted changes on these two crank jumbo planets .
Uranus ’ polar vortex looks like a Brobdingnagian smart cloud that cover most of the planet ’s north pole . Planetary scientists believe that this unique feature take form as a outcome of the extreme tilt of the major planet . Due to a stupendous shock , the planet rotates almost on its side . And for this ground , during Uranus ' summer , the Sun shines almost directly over the magnetic north pole , without ever setting . The satellite is now getting into mid - summer and the icy cap is becoming more prominent , a strong indicator of seasonal variance .
Uranus also feature a compact methane - ice cloud , seeable near the edge of the polar cap , and a flimsy dance band of clouds just northerly of the equator . It is ill-defined how such features persist give the strong flatus present on both Uranus and Neptune .
Further out , we have Neptune and its incredible dark tempest . The fresh one , seen by Hubble in September 2018 , is the 6th and latest dark whirl seen on the satellite . Two were reveal by the Voyager 2 investigation and the rest were spotted by the lancinate eye of the place scope . The latest one is 11,000 kilometers ( 6,800 miles ) across and it is accompanied by brilliant white companion clouds . These are formed by methane freezing and being tug upwards by the dark vortex .
Both satellite are study ice giants . They have thick-skulled atmospheres and no solid surface . Their Department of the Interior are likely to be a H / atomic number 2 mantle around a water - rich ( and maybe even rocky ) core . The methane present in their standard atmosphere scatters the sunlight back into space and gives the satellite their characteristic blue / green hues .
