1>> Ever wondered how the pull of gravity is calculated between heavenly bodies? It's simple. Just multiply their masses together, and then divide the total by the square of the distance between them.
2>>. The Sun travels around the galaxy once every 200 million years – a journey of 100,000 light years.

3>> The very furthest galaxies are spreading away from us at more than 90% of the speed of light.


4>> The Universe may have neither a centre nor an edge, because according to Einstein’s theory of relativity, gravity bends all of space time around into an endless curve

5>>. Twice during Mercury’s orbit, it gets so close to the Sun and speeds so much that the Sun seems to go backwards in the sky.
6>>. Planets have magnetic field around them because of the liquid iron in their cores. As the planets rotate, so the iron swirls, generating electric currents that create the magnetic field.

7>>. Jupiter has no surface for a spacecraft to land on because it is made mostly from helium gas and hydrogen. The massive pull of Jupiter’s gravity squeezes the hydrogen so hard that it is liquid.

8>> Voyager 2 has flown over 6 billion km and is heading out of the solar system after passing close to Neptune in 1989.

9>>. Winds ten times stronger than a hurricane on Earth swirl around Saturn’s equator reaching up to 1100 km/h – and they never let up: even for a moment.

10>>. Einstein’s theory of general relativity shows that gravity not only pulls on matter, but also space and even ‘Time’ itself.

11>>. With powerful telescopes, astronomers can see galaxies 2 billion light years away. This means we see them as they were when the only life forms in Earth were bacteria.


12>> The fastest spinning objects in the Universe are neutron stars – these can rotate 500 times in just 1 second.

13>>. In summer in Uranus, the sun does not set for 20 years. In winter, darkness lasts for 20 years. In autumn, the sun rises and sets every 9 hours.
14>> Uranus’s moon Miranda is the weirdest moon of all. It seems to have been blasted apart, and then put together again.

15>>. The heart of a star reaches 16 million °C. A grain of sand this hot would kill someone 150 km away.

16>>. The sun weighs 2,000 trillion trillion tones – about 300,000 times as much as the Earth – even though it is made almost entirely of hydrogen and helium, the lightest gases in the Universe.

17>> The nuclear fusion reactions in the Sun’s core send out billions of light photons every minute but they take 10 million years to reach its surface.


18>> The Hiroshima bombs released 84 trillion joules of energy. A supernova releases 125,000 trillion trillion times as much.

19>>. The brightest stars in the night sky are not actually stars, but the planets Jupiter, Venus, Mars and Mercury.
20>>. There may be 20 trillion galaxies in the Universe.

21>>.If you put saturn in water it would float.

22>>the planet earth is travelling through space at 530kph an hour.
23>>the light hitting the earth right now is 30,000 yrs old.

24>>the sun loses around a billion kilograms a second due to solar winds.

25>>sunspot activity may be the primary reason for the beautiful sound of stradivarius violins


ABOVE FACTS ARE FROM
125 facts about outer space
listverse.com