None of the four "gas giant" planets (Jupiter, Saturn, Uranus, and Neptune) has a solid surface, so all we see are just clouds in their atmospheres. Saturn: pale gold.
Jupiter is of orange-yellow color but reflects mainly blue rays of the spectrum. Venus is considered to be pure white but it also reflects indigo rays of the spectrum. Saturn is of black color and reflects violet rays of the Sun. The two shadow planets Rahu and Ketu have also been assigned colors in Vedic astrology.
You've probably wondered how much gold is left in the world, but have you ever wondered how much gold there is beyond our world? As it turns out, there's a giant asteroid that contains enough gold and other metals to make everyone on Earth a multibillionaire.
The planets of the solar system are varied in their appearance. Mercury is slate gray while Venus is pearly white, Earth a vibrant blue, and Mars a dusky red. Even the gas giants are different, Neptune and Uranus an opaque blue, while Jupiter and Saturn are mostly beige with brilliant red-brown belts.
Named GJ 504b, the planet is made of pink gas. It's similar to Jupiter, a giant gas planet in our own solar system. But GJ 504b is four times more massive. At 460°F, it's the temperature of a hot oven, and it's the planet's intense heat that causes it to glow.
Alt text: Pluto is shown in a rainbow of colors that distinguish the different regions on the planet. The left side of the planet is mostly blue-green with purple swirls, while the right side ranges from a vibrant yellow-green at the top to a reddish orange toward the bottom.
Mars is a rust-orange color. (We know, it's called the Red Planet—what can we say? It's orange.) Jupiter is a light tan color and Saturn is a yellow-ish tan color.
Darkest Planet Found: Coal-Black, It Reflects Almost No Light. The newfound gas-giant planet TrES-2b is black with a slight red glow, experts estimate.
There are no naturally occurring processes that produce new gold… on Earth. The process by which gold is created takes place amongst the stars! Gold is formed when stars explode or collide, only then are the necessary energy and conditions right to create gold.
On saturn, it literally rains diamonds.
There is no shortage of gold on earth. The problem is that it is much deeper than we can mine. Current scientific theories estimate that there is enough gold in the core to cover the surface of the earth with a 4 meter thick layer of pure gold.
Saturn's dark-side rings glow in shades of brown and gold, contrasting with the more neutral appearance of the icy moon Tethys.
The outer atmosphere of Jupiter is mostly hydrogen and helium, with some water droplets, ice crystals, and ammonia crystals. When these elements form clouds, they create shades of white, orange, brown, and red, the colors of Jupiter.
Viewed through a telescope, Venus presents a brilliant yellow-white, essentially featureless face to the observer. Its obscured appearance results from the surface of the planet being hidden from sight by a continuous and permanent cover of clouds. Features in the clouds are difficult to see in visible light.
To be precise, Uranus and Neptune both exhibit a range of colors from deep blue to pale green, depending on lighting and observation conditions. The reason for this can be understood by looking at their structure. The atmospheres of these planets contain mostly hydrocarbons, the main of which is methane.
So, Mars is red because it has a layer of rusty dust covering its entire surface! Mars has some of the largest dust storms in the galaxy, in which the red dust gets whipped into the light atmosphere surrounding the planet. This is why Mars also appears to have a red sky.
Exoplanet showered with ruby and sapphire
A hot, giant exoplanet, called WASP-121b, could experience ruby and sapphire rain. Astronomers developed a three-dimensional model of the planet based on observations taken from a spectroscopic camera aboard the Hubble Space Telescope.
A "dead" star is one that has no more nuclear fusion going in it. When a star dies, it leaves some remnant behind. Depending on the mass of the star, the remnant can be a white dwarf, neutron star or a black hole. White dwarfs are what was once the core of a star.
Neptune: The Blue Planet | NASA.
“Blue Marble” true-color image of Earth taken from a single remote-sensing device-NASA's Moderate Resolution Imaging Spectroradiometer, or MODIS.
Saturn's rings make up an enormous, complex structure. From edge-to-edge, the ring system would not even fit in the distance between Earth and the Moon. The seven main rings are labeled in the order in which they were discovered. From the planet outward, they are D, C, B, A, F, G and E.
Mars is known as the Red Planet because iron minerals in the Martian soil oxidize, or rust, causing the soil and atmosphere to look red.
Mimas couldn't possibly harbor an ocean. Or could it? Mimas, Saturn's cryptic-looking moon, is awfully deceptive. The small moon is dominated by an 80-mile-wide crater, giving it the appearance of the grim Star Wars Death Star — a space station equipped with a planet-destroying weapon.