Any planet with an atmosphere, even the Earth, can form a vortex like this. For planetary scientists studying Venus, the image was strangely familiar. When Venus Express arrived in orbit around Venus in April , one of the top priorities was to discover whether the South pole possessed a similar double-vortex.
It did. In addition, they require the Coriolis force — the interplay between the circulation of the atmosphere and the rotation of the planet — to whip them up. Cancel Search in. Source: Wikipedia. It is a gas giant with a mean radius of about nine times that of Earth.
It only has one-eighth the average density of Earth; nonetheless, with its larger quantity, Saturn is over 95 times more massive. Saturn's interior is most likely composed of a core of iron--nickel and stone silicon and oxygen compounds. Its core is surrounded by a deep layer of metallic hydrogen, an intermediate layer of liquid hydrogen and liquid helium, and eventually a gaseous outer layer.
Saturn has a pale yellow hue due to ammonia crystals at its upper atmosphere. An electric current within the metallic hydrogen layer is supposed to give rise to Saturn's planetary magnetic field, which is weaker than the Earth's, but has a magnetic moment times that of Earth due to Saturn's larger size.
Saturn's magnetic field strength is around one-twentieth of Jupiter's. The outer atmosphere is generally bland and lacking in contrast, although long-lived features can appear. The world's most famous feature is its prominent ring system, which is composed mostly of ice particles, with a smaller amount of rocky debris and dust. The planets in question are Venus and Saturn. Look for them around a. Brilliant Venus , shining with a steady silvery-white glow, will be passing about 1.
If you have a telescope you might want to try to get a view of its breathtakingly beautiful rings, although its low altitude — just 10 degrees above the horizon — will be a bit of a handicap since atmospheric turbulence can make for a rather unstable image. The tilt of the rings was at a maximum in October , but they are still "wide-open" from our earthly perspective, some As for Venus, it displays a rather small gibbous shaped disk, 69 percent illuminated by the sun.
Venus is presently "catching up" with Earth, and as it races clear of the sun, it appears to get between Earth and slow-moving Saturn. Since Venus is an inner planet, and orbits the sun much more closely than Earth does, we only ever see it either close to sunrise or for a short time after sunset.
For a few months each year, it's only visible before dawn, so we call it the "Morning Star.
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