astronomy Physics Science

The existence of the ISS refutes the flat-earth

It seems that flat-earth believers deny the existence of satellites, which means all global navigation system satellites (GNSS) including the American GPS satellites (at 20,000 km altitude), all geostationary satellites (at 35,000 km altitude) and all low earth orbit TV transmitting satellites (around 300 km altitude). The elephant not in the kitchen but in space is the largest of satellites, the International Space Station (ISS), the largest man-made structure in space. It orbits at an altitude of about 400 km, which is well outside of the atmosphere.

The ISS can be seen from the earth’s surface with the naked eye, when it passes overhead on a 90 minute circumnavigation of the planet, travelling much faster than stars move. It looks like a fast-moving plane only much higher and traveling thousands of kilometers an hour faster. When it comes into view in your area it is best viewed within two hours of sunset or sunrise. Because of the very large solar panels, used to power the spacecraft, sunlight can reflect off those in your direction.

The ISS with solar panels fully deployed. Curvature of the earth is clearly seen.

Here is a live video feed from the ISS. But flat-earthers say that all such video is faked. They say that all space agencies fake everything they show. So you can’t win.

NASA has it own TV showing live feeds from the ISS when available. Below is a YouTube recording of a past live feed.

climate change God's sovereignty Science

Increased carbon dioxide has caused an increase in green vegetation globally

A report published by the Australian CSIRO in 2013 has shown that the increased carbon dioxide in the atmosphere has been very good for the planet. CO2 is plant food and the increased concentration is the atmosphere has meant a ‘greening’ of vegetation in all areas of the planet. This includes the arid Australian deserts.

Quoting the report:

In findings based on satellite observations, CSIRO, in collaboration with the Australian National University (ANU), found that this CO2 fertilisation correlated with an 11 per cent increase in foliage cover from 1982-2010 across parts of the arid areas studied in Australia, North America, the Middle East and Africa, according to CSIRO research scientist, Dr Randall Donohue.

“In Australia, our native vegetation is superbly adapted to surviving in arid environments and it consequently uses water very efficiently,” Dr Donohue said. “Australian vegetation seems quite sensitive to CO2 fertilisation.

This, along with the vast extents of arid landscapes, means Australia featured prominently in our results.”

“While a CO2 effect on foliage response has long been speculated, until now it has been difficult to demonstrate,” according to Dr Donohue.

Thus I conclude that if this is the case then the increase in carbon dioxide in the atmosphere provides a providential benefit to the planet. We live under common grace, meaning that God the Creator is the One who sends the rain, feeds the plants and grows the crops. He doesn’t differentiate where or for whom He does this. He provides for all, both good and bad.