Posted by ARJUN on Dec. 11, 2012, 3:05 p.m.
16 – If our Sun were just inch in diameter, the nearest star would be 445 miles away.
17 – Astronauts cannot belch – there is no gravity to separate liquid from gas in their stomachs.
18 – The air at the summit of Mount Everest, 29,029 feet is only a third as thick as the air at sea level.
19 – One million, million, million, million, millionth of a second after the Big Bang the Universe was the size of a …pea.
20 – DNA was first discovered in 1869 by Swiss Friedrich Mieschler.