- The weight of largest Meteorite that fell in “Hoba Wes” in Namibia was 60 tons.
- The spiral galaxy “Milky Way” with a radius of about 50,000 light years contains some 100 billion stars.
- On the earth the gravitational pull is greatest for moon, its approximate distance from our earth is 384,623 km.
- The Sun is the closest star to the Earth (at the distance of about 149,600,000 km).
- A theory which states that the universe began in an enormous explosion is called “Big Bang Theory”.
- An English astronomer “Prof. Sir Fred Hoyle” coined the term “Big Bang” to explain a scientific theory on the creation of cosmos.
- A star that suddenly increases its brightness (greatly) because of a catastrophic explosion and ejects most of its mass is known as “Supernova”.
- Sometimes, in the photosphere, some patches of gas, which is cooler that its surrounding (gas) are known as “Sunspots”.
- Two stars that revolved around one another, locked together by each other’s gravity is known as “Binary Star”.
- A display of light in the upper atmosphere near a planet’s poles, caused by solar wind, is known as “Aurora”.
- A layer of gas that surrounds a planet or star is known as “Atmosphere”.