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More about Space

on March 21, 2013

Why  we must never look at Sun ?

Not even sunglasses fully protect your eyes from the sun’s dangerous ultraviolet (UV) rays. UV can burn your eyes and make you blind. If you want to see the Sun safely , ask an adult to show you how to project its image on to a sheet of paper.

Why does the Moon have so many craters ?

Because it has been pelted by so many space rocks and has no atmosphere to protect it . One of the biggest craters, called Bailly, is nearly 300 km across. You can make out some of using a good pair of binoculars.

Does Mars have ice at its poles ?

Yes. Its south pole is mostly ‘dry ice’,which is frozen carbon dioxide  gas.At north pole there may be frozen water , mixed with the frozen carbon dioxide . There may be frozen water underground on Mars, too.

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