This is an animated GIF, so it may take a moment to load:
I believe the ration is 8 to 13 for the number of revolutions around the sun for Venus and Earth to be aligned. (Or maybe it was 5 to 8.) Anyway, it produces the following graph:
So, it turns out, that black holes may not exist, and in getting rid of them the math comes out better. And, perhaps just as importantly, you can read all of the work for yourself on Arxiv.org: first paper, second paper. (Hello, Humanities? No one’s the nineteenth century called, and it wants its communication infrastructure back. Or, rather, it’d rather you didn’t use it exclusively, but, you know, try using something from the twentieth century.)
The two Voyagers were launched at a particular moment in our solar system’s clock, in order to take advantage of the line-up of the planets so as to slingshot themselves out of the solar system, something which will not occur again for 200 years. 1977! I was 12, and I thought this was but the beginning…
Scientists using European Space Agency’s Herschel Space Observatory have detected water vapor escaping from two regions on the dwarf planet / asteroid Ceres. The question then becomes whether it is erupting from cold volcanoes or if it is subliming, with a possible answer coming in 2015 when the NASA Dawn spacecraft orbits the planet/asteroid. Water on Ceres supports “models of the solar system in which giant planets, such as Jupiter, migrated to their current positions, mixing material from the outer and inner regions of the solar system. This mixing could have moved Ceres and Vesta far from the sites where they formed. Ceres probably formed close to its current position, but accreted material from further out. … The findings also suggest that asteroids may have delivered some of the water in Earth’s oceans.”
And, strangely enough, Ceres features in James Corey’s Leviathan Wakes, which I just finished reading. Cue Twilight Zone music…
Read the report at Sci-News. In the mean time, here’s an illustration to whet your appetite:
I didn’t know that water on Mars had previously been discussed. Given the job of reading Kim Stanley Robinson’s Mars trilogy, I couldn’t help but imagine a not-so-distant future where the presence of water on Mars becomes central to colonization efforts of the planet.