Mach 890. Around the earth in 33 seconds.
(sea level, atmosphere, humidity etc etc).
Contrary to a decades-old hypothesis, there may be very little lightning in the atmosphere of Venus – or even none at all – according to researchers analysis of data collected by NASA's Parker Solar Probe. In 1978, the Pioneer Venus spacecraft orbited the planet and detected what appeared to be electromagnetic "Whistler" Waves …
Since Mach is the ratio of speed relative to the speed of sound, every craft not within a planet's atmosphere is traveling at Mach v/0 which is mathematically undefined since sound doesn't travel in a vacuum.
Also to be completely pedantic, Mach 1.0 is not a constant. It varies with air density (atmospheric pressure and altitude) and humidity. (I.e., Mach 1 at 60,000 feet ASL is not the same speed as Mach 1 at sea level; and Mach 1 on Earth is not the same speed as Mach 1 on Mars).
Well done puny mortal! You have survived the first challenge! Now the 400°C surface temperature will melt you! Not to mention the 90 bar pressure. And despite the lack of thunder, we still have the sulphuric acid rain to dissolve your lifeless corpse!
it's one less way to die I suppose...
Bloody good show with the science! To use a probe that just happens to be wandering past to do some science on the way. Should I replace wandering with zooming perhaps?