How do we Know what the Stars are Made of?

Dr Bruno Letarte addressed this question at the South African Astronomical Observatory (SAAO) in Cape Town 9th April 2011. Background Have you ever wondered what the stars are made of, or if it is possible to figure this out using the tools that we have access to? Two hundred years ago the accepted scientific consensus … Continue reading How do we Know what the Stars are Made of?

Saving the Southern African Large Telescope

I recently attended a talk by Dr Darragh O'Donoghue hosted by the Royal Society of South Africa on their 134th anniversary. Dr O'Donoghue holds a Phd in astronomy from the University of Cape Town and is currently the Southern Africa Large Telescope (SALT) instrument director with extensive research interests and activities across the world, including … Continue reading Saving the Southern African Large Telescope

The Evolution of the Eye

Charles Darwin, author of the groundbreaking On the Origin of Species, is frequently quote-mined for a variety of reasons. One of the most popular Darwin quotes frequently used by Creationists is: To suppose that the eye, with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and … Continue reading The Evolution of the Eye

Eerie Sounds of Saturn’s Radio Emissions

From Nasa.gov. http://www.nasa.gov/mission_pages/cassini/multimedia/pia07966.html Please follow the link just below the picture on the website to download the small sound file of 717 KB (734,972 bytes). Saturn's radio emissions were detected by Cassini (the primary spacecraft continuously orbiting Saturn and updating Earth's astronomers on its findings) when it was 374 million kilometers away from Saturn. These … Continue reading Eerie Sounds of Saturn’s Radio Emissions