July 19th was ‘Wave at Saturn’ day, the day Cassini took our picture from in orbit around Saturn (so I do hope you waved). I feel, therefore, it’s time to post the promised and hotly anticipated Part II of my favourite pictures from the mission so far. Part I can be found here.
A few days ago I read an article about plans for NASA’s & ASI’s Cassini probe to take a picture of the Earth from its orbit around Saturn, in the same vein as Carl Sagan’s Pale Blue Dot taken by the Voyager 1 probe. This type of picture really drives home how insignificantly small and delicate the Earth is as it floats through the Universe, and I’m sure the new picture will instil people with the same sense of wonder and/or horror that its predecessor did. The Cassini-Huygens mission has expanded our knowledge of the Solar System so much during its time that I’ve wanted to write about it for a while. And by “write about it” I obviously mean “post nice pictures”.
So here is Part I of my favourite images taken by Cassini, and its companion on the long journey to Saturn, ESA’s Huygens probe. All are click-able if you want to open them up for full-screen viewing.
It’s now almost a century since Albert Einstein published his general theory of relativity and we’re still trying to find a flaw in it. It remains our best theory of space, time and gravity. But, as ever in science, we’re constantly striving to test it in new ways in the hope that some experiment or observation will disagree with the theoretical prediction. We hope this because it’s certain that general relativity isn’t the full picture.
Recent discoveries just might help reveal what we’re missing.