By how much is Uranus tilted on its axis?

About 23.5 degrees — the same as Earth About 0 degrees — Uranus is perfectly upright About 98 degrees — it essentially rotates on its side About 180 degrees — it is completely upside down

What gives both Uranus and Neptune their blue-green color?

Their surfaces are covered in blue-green ocean water Methane gas in their atmospheres absorbs red light and reflects blue-green light back to space They reflect the blue color of space around them Ammonia ice in their clouds reflects blue light

What is the coldest atmosphere of any planet in the solar system?

Pluto, because it is the farthest from the Sun Neptune, because it is the last planet Uranus, with temperatures reaching as low as -224 degrees C Saturn, because its rings block sunlight

Which planet has the strongest sustained winds in the solar system?

Jupiter, due to its enormous size Saturn, because of its ring system Uranus, due to its tilted rotation Neptune, with winds reaching up to 2,100 km/h

How were Uranus's rings discovered?

They were photographed directly through telescopes They were discovered when Voyager 2 flew past in 1986 By stellar occultation in 1977 — scientists watched Uranus pass in front of a star and saw the starlight dim multiple times before and after the planet They were discovered by the Hubble Space Telescope in 1990

What are the moons of Uranus named after?

Greek gods and goddesses Roman gods and goddesses Characters from the works of William Shakespeare and Alexander Pope Famous astronomers throughout history

What makes Triton, Neptune's largest moon, unique compared to other large moons?

Triton is the largest moon in the solar system Triton orbits Neptune backward (retrograde) — opposite to Neptune's rotation — indicating it is a captured Kuiper Belt object Triton has a thick oxygen atmosphere like Earth Triton is made entirely of solid iron

What was discovered on Triton's surface when Voyager 2 flew past?

Oceans of liquid water on the surface Active volcanoes erupting molten rock A thick ice sheet covering the entire surface Active nitrogen geysers shooting dark plumes several kilometers into the thin atmosphere

Which spacecraft has been the only one to visit both Uranus and Neptune?

Voyager 1, which visited all four outer planets Cassini, which also studied Saturn Voyager 2, which flew past Uranus in 1986 and Neptune in 1989 New Horizons, which also visited Pluto

How long does it take Neptune to complete one orbit around the Sun?

About 12 Earth years About 84 Earth years About 165 Earth years About 248 Earth years

What do ice giants like Uranus and Neptune contain in addition to hydrogen and helium that makes them different from the gas giants?

Large iron and nickel cores, like the terrestrial planets Solid diamond cores formed under extreme pressure Large amounts of water, ammonia, and methane in hot, pressurized fluid states deep inside Radioactive uranium and plutonium that heat their interiors