Another pretty blue ball? But wait, it’s not earth. Did you think that it is water. If you think that someday we can go live on it, think again.…and guess what gives it the blue colour? The atmosphere of HD 189733b is full of particles of silicate…
Do you know what silicate is? Silicate is a mineral that makes up about 60% of the Earth’s crust. It is a non-metallic chemical element that occurs naturally in many different forms. In its purest form, silica is a white crystalline solid. However, it is also commonly found in the earth’s surface as quartz sand. It is often associated with volcanic eruptions and is a major constituent of glass.
So, when it rains on HD189733b, it isn’t water, it is glass. That’s not the scariest part yet. The winds on HD189733b can have speeds of 5400MPH. When wind blows the rain comes down sideways. So imagine getting caught up in a rain of glass at wind speeds 7 times more than the speed of sound.
It is the size of our Jupiter. It is so close to it’s star, which is like our sun, revolves faster making one year on the planet as short as 2.2 earth days. Astronomers also tell us that the X-Ray and UV radiations from its sun is evaporating it’s atmosphere at a very fast rate: 100 millions of kilos per second.