Showing posts with label revolution. Show all posts
Showing posts with label revolution. Show all posts

Wednesday 8 April 2015

What if a satellite went around the Earth in the opposite direction?

The animation shows retrograde and prograde rotation of celestial objects in Space.

The Earth is known to spin in the counter-clockwise direction when viewed from the top. It is known to spin at 1670 Km/hr which is extremely fast considering the size of the planet. From Earth, satellites are traditionally sent to space to rotate in the direction of the earth's rotation. This is normally done because of the speed advantage that the Earth provides to the satellite adding 1670 Km/hr to the speed of the satellites rotation this is known as a prograde orbit. Rotation in the opposite direction is known as retrograde orbits.

Saturday 28 March 2015

Is our sun also moving like planets?


For as far as we can see, the Sun is in a centrally steady position with the planets revolving around it. But if you zoom out a little bit and look at the Milky Way, your perspective changes drastically. The Milky Way has a centre that is supposedly a collapsed star also known as a black hole. A strong centre around which many celestial bodies revolving is in a way the rule of the universe. If this is true, it means that our sun is moving continuously and taking the entire solar system with it. But if this were true, why hasn't there been a collision in all this movement?

We have to consider that if the Sun revolves around the milky way then everything else in the milky way is also doing the same thing. There could also be the possibility that our sun and the solar system might be revolving around a bigger sun which makes our existence really small in the sea of the universe. The possibility of this maybe unlikely because if it were happening, we would be able to see two suns in our sky.

Looking at an even bigger picture, if the sun revolves around the Milky Way then is the milky way also doing the same thing but at a much much larger scale that we are not able to perceive. If this were happening then this could be the way the universe works. The galaxies look stable but in reality they are moving around this huge central power. This would also prove that how are Galaxies stationary and not moving around. We will be able to conclude that there is no such thing as dark matter.

The star positions appear similar to us every night because everything in the milky way must be revolving around the centre at the same speed. A better example of what's happening here can be two trains travelling at the same speed parallel to each other. The people on the two trains will feel that they are stationary but in reality they are moving at very high speeds.

Thanks for reading!