According to astronomical observations, galaxies like our own experience about one supernova (a violently-exploding star) every 25 years.
The gas and dust remnants from such explosions (like the Crab Nebula) expand outward rapidly and should remain visible for over a .
Lately, there has been much talk of the "Kuiper Belt," a disc of supposed comet sources lying in the plane of the solar system just outside the orbit of Pluto. The main way known to remove the sediment from the ocean floor is by plate tectonic subduction.
Some asteroid-sized bodies of ice exist in that location, but they do not solve the evolutionists' problem, since according to evolutionary theory, the Kuiper Belt would quickly become exhausted if there were no Oort cloud to supply it. That is, sea floor slides slowly (a few cm/year) beneath the continents, taking some sediment with it.
As far as anyone knows, the other 19 billion tons per year simply accumulate.ACTS & FACTS IMPACT THE UNIVERSE WAS CREATED RECENTLY DIAMONDS AND STRATA HAVE TOO MUCH CARBON-14 MINERALS HAVE TOO MUCH HELIUM THE SEA DOES NOT HAVE ENOUGH MINERALS WORLDWIDE CATASTROPHIC EVIDENCE IS EVERYWHERE Here are fourteen natural phenomena which conflict with the evolutionary idea that the universe is billions of years old.The numbers listed below in bold print (usually in the millions of years) are often maximum possible ages set by each process, not the actual ages. The point is that the maximum possible ages are always much less than the required evolutionary ages, while the biblical age (6,000 years) always fits comfortably within the maximum possible ages.By that scenario, they would have buried at least eight billion bodies. The usual evolutionary picture has men existing as hunters and gatherers for Yet the archaeological evidence shows that Stone Age men were as intelligent as we are.If the evolutionary time scale is correct, buried bones should be able to last for much longer than 200,000 years, so many of the supposed eight billion stone age skeletons should still be around (and certainly the buried artifacts). This implies that the Stone Age was much shorter than evolutionists think, perhaps only a few hundred years in many areas. It is very improbable that none of the eight billion people mentioned in item 12 should discover that plants grow from seeds.Some of the items on this list can be reconciled with the old-age view only by making a series of improbable and unproven assumptions; others can fit in only with a recent creation. The observed rotation speeds are so fast that if our galaxy were more than a few hundred million years old, it would be a featureless disc of stars instead of its present spiral shape. Evolutionists call this "the winding-up dilemma," which they have known about for fifty years.They have devised many theories to try to explain it, each one failing after a brief period of popularity.This implies that the folding occurred less than thousands of years after deposition. Measurements of the mutation rate of mitochondrial DNA recently forced researchers to revise the age of "mitochondrial Eve" from a theorized DNA experts insist that DNA cannot exist in natural environments longer than 10,000 years, yet intact strands of DNA appear to have been recovered from fossils allegedly much older: Neandertal bones, insects in amber, and even from dinosaur fossils. With their short 5,700-year half-life, no carbon 14 atoms should exist in any carbon older than 250,000 years.This is not only evidence for the youth of the earth, but also for episodes of greatly accelerated decay rates of long half-life nuclei within thousands of years ago, compressing radioisotope timescales enormously. Yet it has proven impossible to find any natural source of carbon below Pleistocene (Ice Age) strata that does not contain significant amounts of carbon 14, even though such strata are supposed to be old.The same "winding-up" dilemma also applies to other galaxies.For the last few decades the favored attempt to resolve the puzzle has been a complex theory called "density waves." The theory has conceptual problems, has to be arbitrarily and very finely tuned, and has been called into serious question by the Hubble Space Telescope's discovery of very detailed spiral structure in the central hub of the "Whirlpool" galaxy, M51.