THE METAL CALLED IRON

Iron, symbolized as Fe, is a chemical element and a metal with atomic number 26. It's a transition metal known for its strength, malleability, and magnetic properties. It's the most widely used metal and is a crucial component of steel. 

Its melting point is 1536 °C.And its density is 7.8 g.cm-3 at 20°C.

Iron is the most abundant metal on Earth and is believed to be the tenth most abundant element in the universe. Iron is also the most abundant element making up the Earth; the concentration of iron in the various layers of the Earth ranges from high at the inner core to about 5% in the outer crust, it is possible the Earth’s inner core consists of a single iron crystal although it is more likely to be a mixture of iron and nickel; a large amount of iron in the Earth is thought to contribute to its magnetic field. Iron is a metal extracted to its magnetic field. Iron is a metal extracted from iron ore and is hardly ever found in the free state.

NASA SOLAR PLATES

Humans have been finding creative ways to harness the Sun's heat and light for thousands of years. But the practice of converting the Sun’s energy into electricity — what we now call solar power — is less than 200 years old. Yet in that short time, solar power has revealed the Sun’s limitless potential to power an increasingly technological society. Since the 1950s, NASA has harnessed the energy of the Sun to power spacecraft and drive scientific discovery across our solar system. Today, NASA continues to advance solar panel technology and test new innovations.

 NASA uses a variety of solar panels depending on the mission and spacecraft. For many applications they utilize multi-junction solar cels made from materials like gallium Arsenide ,which offer high efficiency and resistance to radiation damage in Space.