does the size of earth change with time?

Answer 1

Interesting question samsam.

Most people's immediate reaction would be to say that "of course it isn't".

But I can tell you that the earth increases in mass by 2 tons every single day !

It is estimated that around 20 tons of space debris in the form of dust, micro-meteorites, ice, and sometimes larger particles, hits the earth's atmosphere very day. Most of this burns up, but an estimated 2 tons of it will find its way to the ground.

I will leave the physicists and mathematicians amongst you to calculate if the resultant changes in gravity will alter our orbit enough to destroy the Earth before the Sun explodes into a red giant !

Answer 2

From the time of the BIg Bang when the earth was all molten to now there have been changes to the diameter , however in most of documented history that size has been the same

Answer 3

To a very very small degree, yes, since material from the Earth is used to make probes and sattelites that are launched into space permanently. Plus, small amounts of debris land on Earth, but the actual change in size would probably never be measurable......unless we start to build REALLY big spaceships in the future.

Answer 4

Yes, incredible as it sounds, the earth is apparently taking on more mass all the time. It isn't a lot, but from the astronomers who watch this kind of thing, say it looks like it might be something like a couple of tons of mostly dust and debris.

Answer 5

I am not aware that the earth is neither losing mass nor changing density. What lead you to ask this question?

Answer 6

Everything everywhere changes constantly. At least a little.

Answer 7

not exactly....