But not all stars are made out of the same materials or stuff as our Sun, meaning that in the wider expanse of our Galaxy, we can expect to find exopanets different from those offered in our small solar system.
For example, the Stars that are richer in carbon that our sun - with more carbon than oxygen - can have exoplanets that are primarily made off diamonds, if the situation is fine, with a little bit of silica, and now, in a laboratory scientists squeezed and heated silicon carbide to find out what the situation might be.
The geophysicist of Earth and space exploration of Arizona state university's school Harrison Allen-Sutter said that '' These exoplanets are unlike anything in our solar system.
The idea that stars with higher carbon to oxygen ratios than the sun can produce the planets that emerged with the discovery of the first 55 Cancri E, a super Earth exoplanet orbiting star carbon in 41 light year far away is considered rich.
It was later discovered that this star was not the same as previously thought carbon which paid off that idea - at least as far as 55 Cancri E is concerned.
But between 12 and 17 percent of planetary systems could be located around carbon rich stars and with thousand of exoplanet hosting stars identified to date, the diamond planet seems a different possibility.
Scientists have already discovered this idea and confirmed that such planets are composed mainly of compounds of carbides, carbon and other elements. If such a planets was enriched with silicon carbide, the researchers hypothesized, and if water existed to oxidize silicon carbide and convert it to silicon and carbon, with enough heat and pressure, carbon could become a diamond.
To confirm their hypothesis, they turn to a diamond anvil cell, a device used to squeeze small samples of material to very high pressures. They took minute samples of silicon carbide and immersed them in water. Then, the diamonds were placed in an anvil cell, which pressurized them to 50 gigapascals nearly half a million times the Earth's atmospheric pressure at sea level. After squeezing the samples, the team heated them with lasers.
In all, he scored 18 of the experiment and he found that, as he predicted under high heat and high pressure, his silicon carbide samples reacted with water to convert to silica and diamond.
Thus, the researchers concluded that at temperature up to 2,500 Kelvin, and pressure up to 50 gigapascals in the presence of water, silicon carbide lanes may oxidize, and silica and diamonds dominate their internal compositions.
If we can identify these planets - perhaps from their density profiles, and the composition of their stars then we can rule them out as planets then can host life.
Their interiors, the researchers said, would be very difficult for geological activity, and their creation would make their atmosphere inhuman to life as we know it.
Allen Sutter said that '' this is an additional step in helping us understand our ever increasing and improved observation of exoplanets.''
''The more we learn, the better we will be able to interpret new data from upcoming future mission such as the James Webb space Telescope and the Nancy Grace Roman space Telescope so that the world can be understood beyond our solar system.''
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