Ilgaz writes in to let us know that we will have to install MS Silverlight 2 to watch the US President's inauguration online. Everyone running Mac PPC, Linux, and FreeBSD has been left out, as there are no working Silverlight 2-capable alternatives on these systems. Here is Microsoft's press release announcing the selection of Silverlight yesterday. Streaming of various events around the inauguration begins today at the Presidential Inaugural Committee site, which touts its "inclusive and accessible" coverage.

Slatterz writes "I own a basic 70mm telescope, which I'm sure Galileo would have given his right arm for in 1609. In fact, this year marks exactly 400 years since Galileo first pointed a telescope at the skies — discovering the moons of Jupiter and helping to prove that the universe doesn't revolve around us. As a mark of respect, the United Nations has declared 2009 the International Year of Astronomy. Official festivities kick off this week in Paris and, to help start the celebrations, 17 radio telescopes in Australia, Asia, Europe and the Americas will track three quasars using something called "real-time Very Long Baseline Interferometry" — basically creating hi-res images by combining their data to simulate a telescope as large as the Earth. Sounds cool."