Carl Sagan, on His Ninetieth Birthday

Carl Sagan, the astronomer and writer, would have turned 90 today. When I was seven, I watched Cosmos on PBS with my dad. In many ways, I credit my atheism to this formative experience. (Also formative, the Ichthus Christian music festival, but that doesn’t have anything to do with Sagan.) Sagan died in December 1996,Continue reading “Carl Sagan, on His Ninetieth Birthday”

Facebook Notices and Tonight’s Mars Opposition

While I’m excited that Facebook has taken an interest in astronomy today, I’m also a bit irked by its announcement about seeing Mars with the naked eye. First, Facebook doesn’t explain why it made this announcement. Mars is at opposition tonight; it will be at its closest to Earth. Second, when Mars is in theContinue reading “Facebook Notices and Tonight’s Mars Opposition”