Ben Pearson, an electrical engineer by training, has put together a website that tracks the Tesla Roadster that the SpaceX Falcon Heavy put into orbit around the sun. His website scripts extract data from from JPL Horizons to provide continuous updates on the position of Roadster’s passenger Starman. Check it out.
Stars come in all sizes, from white dwarfs to average stars like our Sun. But stars can be oh, so much bigger than our G-class sun. Like blue giants. How much bigger? If our sun were placed next to Rigel, it would be barely visible. This excellent video puts it all in perspective. Check it out.
Graham Dawson is an iOS and Android indie developer who specializes in meteorological and astronomical reference apps. He’s the founder and director of Ajnaware Pty, Ltd in Australia and publishes apps under the name ozPDA. Graham holds a B.Sc. in physics and meteorology, and a Ph.D. in oceanography. Graham told me about his early interest in weather thanks to extreme conditions, especially snow. That’s because, in his youth, he was skiing in Switzerland. Soon he had a weather observation station in his backyard, and he could think of nothing else as he entered his undergraduate years. Today, he publishes a wide range of apps related to the sun, moon, wind, weather and time. Some feature augmented reality. Thanks to his academic background, these apps have rock solid computational credentials. Graham told me how it all came to be.
Dr. Phil Plait is an astronomer and a very popular science communicator. His blog, Bad Astronomy, “covers the entire universe, from subatomic particles to the Big Bang itself, astronomy, space exploration, and the effect of politics on science.” Like many young astronomers, Phil’s interest in astronomy ignited when he first saw Saturn and its rings through a telescope. He earned his Ph.D. working on the study of supernovae with the Hubble Space Telescope. We chatted about his career, his enduring work in amateur astronomy with his telescope, his love for science communication, why people who don’t believe in the Apollo moon landings are wrong, the study of a potentially dangerous asteroid or comet collision with Earth, how climate change is affecting us, and the recent discovery of a nearby solar system with Earth-like planets.
Paul Hayes at Sky & Telescope has written a great tip about how to use the iPhone’s accessibility features to turn the iPhone’s entire display a specific color profile. For example, if you need to shade the iPhone’s entire display permanently reddish in order to preserve night-time dark adaption, you can do that. This technique would be particularly handy for amateur astronomers. While some astronomy apps have this feature, this tip applies to the iPhone’s display across the board. The tip is beautifully described, including an explanation of accessibility shortcuts, and also invites exploration for those who have certain kinds of color blindness. Check it out.