Obe Danumata (ඔබේ දැනුමට)

The atmosphere surrounding the Earth has a pale red filter which makes all the light coming from space turn slightly reddish. An object which is very low in the sky, like the setting Sun, has to shine through much more air than when it is high in the sky. This implies that the sun's light has to pass through more of this red filter and, therefore, it has more reddish tint.

We cannot see the stars during the day time, although they are always therein the sky. The bright blue sky hides them from our visibility and when the Sunsets, the blue fades away making the stars visible. This blue is caused by the atmosphere. In space or on the airless moon, the sky is always black and stars can always be seen. Some powerful stars can be seen through telescope during daytime.

Our Solar system consisting of the Sun and the planets which were formed some 4600 million years ago from a huge cloud Liquid hydrogen of gas and very small particles. The gas was mainly hydrogen, which was eventually lost into space by the smaller planets like the Earth, but the giant planets kept their gas intact. The gravitational pull of giant planets is much stronger than that of the Earth and this prevents the hydrogen gas from escaping the planet. Hydrogen makes up about 90 per cent of Metallic hydrogen Rocky core the giant planets. Neptune, probably has an outer shell of liquid hydrogen, an inner one of metallic hydrogen, where electric currents can pass though a small rocky core.

No one has been able to predict the future of the Universe. It could continue as such or eventually slow down, come to a halt and fly inwards to the “Big Crunch'. The astronomers believe that the future of the Universe depends upon the amount of material it contains. The greater the amount of material, the more powerful is the gravitational force trying to pull the galaxies back together. However, the galaxies known to us do not seem massive enough to end the expansion of the universe. But they could have hidden mass which would eventually slow down and end the present expansion.

The Sun has fountains of glowing gas rising from its surface known as a prominence. Some prominence  escape into space, while most of them fall back into the Sun after lasting for a few hours or days. Prominence  appear bright during a to  Solaris  eclipse when they can be seen poking up from the edge of the black disc of the Moon.  Prominence  are mostly larger than the Earth and, in fact, a hundred Earths could fit into one. They are expelled from the photo sphere at speeds of 200 km/sec. The gas in them is very thin and they can be seen only through special equipment.