Pocket reading list : Week 1 of April

These Astronomical Glass Plates Made History : For those of you who are old enough, you will remember that before there were digital cameras, photos were recorded on films and there was a studio where the films had to be taken to have them developed into pictures. Before CCDs (the chips inside digital cameras that made the films obsolete) revolutionised astronomy, astronomers used to use films, rather plates, to record images of astronomical objects and their spectra. This is an account of such plates that made history, that record some of the biggest and paradigm-shifting discoveries in astronomy.

The fall… and rise and rise and rise of chat networks : The first chat network that I ever used was google chat, which is now google hangout, and yahoo messenger. I don't know why but I wasn't into MSN Messenger. But there was a time before mine when chat networks were smaller, less technologically advanced and more geeky, so to say. This is a brilliant account of how chat networks came started, in academia of course, and how they came to be.

A slow farewell – Time to say goodbye to Philae : For those of you who didn't know, the European Space Agency (ESA), landed a probe, called Philae, on a comet. After travelling through space for almost a decade, trying to catch up to the comet on it's way around the sun, the Rosetta satellite reached the comet last summer and landed the probe soon after. On-Site observations can help make sense of observations from orbiting satellites and Philae too helped the Rosetta satellite map the interior of the comet. But, there were problems when ESA was attempting to land the Philae probe on the comet and complications after landing. This is an account of what all the Philae lander, and the Rosetta satellite have been able to achieve so far. If you're interested, you can read "Inside Rosetta’s comet" for more information and insight into what the Rosetta satellite has been able to achieve over the last year.

Dawn Journal: Measuring Light : Dawn is the name of a satellite that NASA launched, one which set the record for the only satellite to have orbited two drawf planets - Ceres and Vesta. The satellite is nearing it's end and this is an account of how the Dawn satellite is helping us understand the dwarf planet/proto-planet Ceres better!

The story of cities, part 1: how Alexandria laid foundations for the modern world : One of the corner stones of modern human civilizations, in my opinion, are the cities that we build and thrive in. Over the course of human evolution, it has been hypothesized that as groups of hunter-gatherers/farmers come together and live as one, new roles arise for individuals in the group. Specialised skills such as tool making or artisanship can thrive when individuals are relieved from the duty of feeding their immediate family. From a series on the story of cities, this is one on how the Great City of Alexandria came to be.

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