We all understand mass refers to the size of a body. It is used in science much the same way in relation to according to Isaac Newton's law having a pulling force. The bigger the body the more inward pull it has. The smaller the less. When it comes to two bodies the combined inward pull of each other on each other that explains how the mass of the planets of our solar system the pulling forces entangled with each other.

The next time you visit your local supermarket pick something weighing a kilogram weighing in your hand. You will be experiencing the size of the earth ( or it's mass in other words ) pulling it to the surface. Putting in a fruit and vegetable scale will confirm the weight referred to in science as the pulling force in Newtons.

 If it was a scientific instrument would have a parallel scale in Newton's reading 8.9. And with the help of the scale you will soon get to know the force of the earth's mass on different things just by weighing in your hand and testing your guess skill weighing it in the scale tray. Check out the specifications of your computer or your weight. In other words mass is the attractive pull of the size a both the earth and your computer rest mass.

It wasn't till Albert Einstein's General theory mass is though to bend space. The size of stars and planets shrinks it round them like paper rapt round an apple. The city street of Wellington New Zealand is shrinking inward space as much as the city streets in central London England on other side of the world. Think of under water.The presure sueezes all round abody.

If we weighed a1kg mass on the surface of the moon it would  register lighter because the mass of the moon is a third as small as the the earth. Mathematics projects will weigh 666 grams less, about 333 grams total. If you weigh 30 grams in our hand is about how heavy a1kg will weigh on the moon.  In orbit round the earth a scale will read nothing. For the mass of the nearest star to earth  ( our sun ) the kg mass will register  well over several kg's.

If you suspend a kilogram bar over the ledge of a tall sky scrapper you can feel the earth's mass pulling on it. Letting go the earth's mass will snatch it accelerating it a meter by the time we say "One thousand and one" This "One thousand and one" is the length of time of  a second. It is the time the second hand of analogue wall clocks and wrist watch second hands move a division and the delay of each second of digital time pieces. It is the start and end of every second. The1kg stops accelerating to a constant free fall velocity continuing to tumble straight down the side of the building impacting with the immovable mass of the earth.

If we do the math's on this there is no such thing as kmph until acceleration is terminated to a constant velocity. The 1kg mass is accelerated 0 to a meter constant acceleration in that time. Mathematics projects 0 to 3.6kmph. The earth's mass is the work and energy we feel while suspending i and the acceleration when we let it go. Anybody into challenging mathematics should be able to work out how many stories the 1kg travels to reach terminal acceleration and the number stories per second constant free fall.

On impact with the street bellow is a reflection there is force and energy when it was free falling. In other words a1kg, 3.6kmp impact. During free fall it is what is called Kinetic energy. The fall also revels how objects tend to tumble in motion. When we throw a ball the spherical mass spins. A baseball pitcher can control the direction in an tempt to upset the batters eye coordinate on the commonly expressed as a curved ball.

Impacting the damage of the free falling 1kg on the street bellow. It is a reflection of this free falling forces. The stored force and energy dissipates thought a mass as if a bigger earth for a second. In other words on impact with the earth's mass the 1kg is a not weightless during free fall but a lot heavier with kinetic energy.

As Albert Einstein discovered acceleration and motion weighs. A classic example of the weight we feel pressing us back in to our seats in a fast acceleration like 0 to 80kmph ( 50mph ) in several seconds for example. Imagine 0 to a 160kmph ( 100mph  ) in a second. Bear in mind by the time we "Say one thousand and one"

This is a reflection of Einstein's general theory the faster we go the more the more mass is applied. Finally as the free falling 1Kg shows the mass becomes so heavy it is not able to accelerate any longer, such as the earth's mass on the 1kg mass. In other words a free falling 1kg mass maximum speed limit for the earth's mass is 3.6kmph. It does not travel a distance any further than meter in a second. It is always a distance of a meter every second no mater how big the distance is.

If Albert Einstein was alive today he would probably use the analogy of NASA using the principle for training astronauts. When an aircraft nosedives fast enough the floor of the fuselage falls away from under the astronauts feet and they frolic about in weightless fun. If fast enough they will stick to the roof. Theoretically can be crushed to death as if on a much bigger planet.

The opposite is true. If a plane can accelerate upwards fast enough the floor would appear to come up a and press  the astronauts feeling weighed down as if the earth's was bigger. Theoretically powerful enough crushed to death. The weightlessness the astronauts feel is a reflection of Einstein's gravitational ( or mass ) equivalence of the earth's mass. Frolicking about in weightless fun from the forces of acceleration and motion is Einstein's mass equlelence.

A distance of a meter in a per second is about the distance we walk. Mathematics projects it would take an hour long TV program if we walked a constant 3.6kmph a distance of 3.6km.

By the time we walk a distance of a meter in second light had traveled a distance of just under 300,000km in the same time. It goes without saying by the time the free falling 1kg falls the stories in a second. We know there is a thousand meters in a kilometer. So in retrospect in terms of meters, light travels 300 million meters by the time we walk a meter and the free falling 1kg tumbles stories the same second.

In other words light cannot travel any further than a distance of 300,000km every second. It is a constant. It is always 300,000km head of us we walk every meter. If we walk faster or jog light will be 300,000km ahead of us in each second. If we jump into a car doing 30kmph light would still be ahead of us by 300,000km in every second. Even if we do160kmph. Even if we travel at the speed of sound, light would still be a maximum distance of 300,000km in every second. No matter how fast we go we would never be able to catch up with light always because it is always a distance of 300,000km every second.

Mathematics projects light should be infinite in a vacuum. It's not because it is at it's maximum momentum speed limit. This momentum takes the sunlight we see from the sun just under 8 minutes to reach earth. We are seeing the sun as it was 8 minutes ago every second and the light that just left in this very second is already 300,000km from the surface we will not see until 8 minutes into the future. In other words real time light we see is relative.

Anybody into mathematics can project the distance the sun is from earth. The laws tell us the distance and light speed is 8 minuets and 8 minutes and the distance is light speed respectively.

Momentum gains mass. It is speculated light has no mass. If we do the math's after all sunlight although reduced in momentum by the air we breath is crashing into us at light speed every one of us right now. We never feel the mass in the momentum carrying right though us  because we are made of atoms which is believed to be mostly empty space.

The earth is a solid object where it is stopped dead in it's tracts. Then reverses direction back though the earth's atmosphere. When it clears it, it instantly accelerates back to it's maximum momentum speed limit.

Albert Einstein showed light will knock the outer orbiting particle of the atom of metals out of their orbits scattering them like a cue ball scattering billiard balls  we take for granted in solar cell technology Einstein . winning the Nobel prize. Today's solar cells are arranged to maximize this property producing electronic power from the sun common in two dollar calculators and cell phones.

As mass is a kinetic energy preventing light from accelerating beyond the light second distance in space. A romantic fascination of science fiction is the acceding of light speed. It is believed time comes stop. Einstein's special theory  tells us time is only relative in a sense from a point of view. If we we travel  at light speed for example the mathematics projects the mass in the momentum is 10,080,000,000kmph. It  projects about 7 times round the earth in a second. At that velocity on the surface the mass generated would be so great we'd probably be crushed to atoms from the share pressure.

 If we travel at light speed in space, we would be traveling in parallel with it. The universe may be viewed as we view the road side traveling on a state highway. From the universes point of view we would be the distance of a light second in every second. On the other hand us being at light speed would probably view the universe as light speed would really see it. We might observe the universe traveling at light speed as we take 8 minutes to reach the sun from earth. Accelerating away it should vanish in the distance a couple of light seconds.

From a light speed point of view light travels 300,000 times faster than a second. Mathematics projects  should see the universe take 300,000 seconds to travel the same distance we observe light the same distance in a second. If we do the math's on this projects the universe should be 3km/s.( 300,000 seconds to travel 300,000km ). Math's can't lie you know.

Mathematics projects 300,000 seconds is about a long weekend so from light speed's point of view see's the universe take along weekend to travel the same distance we observe only in a second. Time is not stopped as far a light speed's point of view only see's the universe slowed down by 300,000 times slower.

If we take 8 minutes to get to the sun from earth for a closer study we would over shoot traveling on indefinitely. We would have to decelerate in orbit round the sun. As we decelerate from light speed the universe ( thus time ) should speed back up to the sub light speed we observe a light second.
During light speed time on earth would be slowed down by 300,000 times. In other words 8 minutes at ;light speed a long weekend passes on earth.

As we decelerate to orbit the sun time on earth would speed up. By the time we established it we would be real time 8 minutes ahead of earth time. In other words decelerating from light speed we are going slower which tells us the slower we go the faster time speeds up. Time does not go any slower than the current sub light speed value.