The history of astronomy is a history of receding horizons.

Researchers have found that the brain definitely sends nerves directly to organs of the immune system and not just to the heart and the lower gut. In that way, too, the brain is influencing the body.

It is true that some off-label drug use is based on very unsettled science and has more risks. But medicine - and not just cancer care - involves lots of hard choices. And the more serious the disorder, often the more likely it is that for every right and wrong treatment choice there are many other practical decisions painted in shades of gray.

If spiritual science is to do the same for spirit that natural science has done for nature, it must investigate quite differently from the latter. It must find ways and means of penetrating into the sphere of the spiritual, a domain which cannot be perceived with outer physical senses nor apprehended with the intellect which is bound to the brain.

That we can now think of no mechanism for astrology is relevant but unconvincing. No mechanism was known, for example, for continental drift when it was proposed by Wegener. Nevertheless, we see that Wegener was right, and those who objected on the grounds of unavailable mechanism were wrong.

Q: What were you thinking when your colleagues were out there making cosmic history? A: I just kept reminding myself that every single component in this spacecraft was provided by the guy who submitted the cheapest tender.