Even as a thought I am finding it difficult. The rock (no longer existing) did at one time exist. So the rock does still exist.. just not right now. I would have to go back the the origin of the rock and stop it from ever occurring. Even still I would have the knowledge it would of existed. It just doesn't now.
Despite global warming since the end of The Little Ice Age, perhaps the next Maunder Minimum is coming:
- "This past week, the Australian continent saw temperature anomalies of up to 28°C below the multi-decadal norm, affecting large regions"
- "Temperatures in Greenland have fallen sharply as the thermometer in Summit showed -55.1 °C on Saturday. On Monday it got even colder, falling to -57.9 °C, That’s about 15 °C below the seasonal norm."
"Decreased sunspot activity has been linked to decreased solar radiation, which in turn means that less energy is reaching Earth’s surface, providing less warmth and less energy for agriculture. Two periods of low sunspot activity (1450-1540 and 1645-1715) coincided with some of the coldest years of the Little Ice Age in Europe. "
"The map is based on data collected by the Dark Energy Spectroscopic Instrument (Desi) in Arizona and contains three times as many galaxies as previous efforts, with many having their distances measured for the first time.
Researchers said that by using this map, they have been able measure how fast the universe has been expanding at different times in the past with unprecedented accuracy.
The results confirm that the expansion of the universe is speeding up, ...
Dr Seshadri Nadathur, a co-author of the work and senior research fellow at the University of Portsmouth’s Institute of Cosmology and Gravitation, said: “What we are seeing are some hints that it has actually been changing over time, which is quite exciting because it is not what the standard model of a cosmological constant dark energy would look like.”"
...yet to be peer-reviewed – reveals how the team first created the 3D map, then measured patterns in the distribution of galaxies that relate to sound waves that occurred in the early universe, known as baryon acoustic oscillations.
As the size of these patterns is known to be regular, the team was able to calibrate the distances to different galaxies in the map, allowing them to work out how fast the universe has been growing over the last 11bn years, with a precision better than 0.5% over all times, and better than 1% between 8bn and 11bn years ago.
Frenk said the precision itself of the measurements was notable given that galaxies could be billions of light years away, and billions of years old. “It’s mind-boggling that we can measure anything to a precision of 1%, which is precision you get in the laboratory in physics for high-precision measurements,” he said.
Europe's top human rights court ruled on Tuesday that the Swiss government had violated the human rights of its citizens by failing to do enough to combat climate change, in a decision that will set a precedent for future climate lawsuits.
So the courts are ruling based on a currently popular scientific theory. What could possibly go wrong?
Not far from where I am in Australia, sediment cores from a large river demonstrate that Europeans in Australia have never seen a wet season and never seen a dry season.