When physics students first learn about Newton’s law and momentum, they get the impression that it’s all about mass. If that’s true, how can mass-less light have momentum? It’s because mass isn’t actually required.
The expanding universe is a complicated place. During inflation the universe expanded faster than light, but that’s something that actually happens all the time, it’s happening right now. This doesn’t violate Einstein’s theory of relativity since nothing is moving through space faster than light, it’s just that space itself is expanding such that far away … Continue reading
I love coffee. Like, a lot. You know who else loves coffee? Astronauts! And also the people who help them do awesome things in space (I think NASA might be powered by coffee). But how do astronauts actually drink coffee in space, aboard the International Space Station, in microgravity? I visited astronaut Don Pettit to … Continue reading
Our science guy Steve Spangler made a return appearance on the Ellen DeGeneres Show today. This was his 19th appearance on the show.
Steve Spangler is a celebrity teacher, science toy designer, speaker, author and an Emmy award-winning television personality. Spangler is probably best known for his Mentos and Diet Coke geyser experiment that went viral in 2005 and prompted more than 1,000 related YouTube videos. Spangler is the founder of http://www.SteveSpanglerScience.com, a Denver-based company specializing in the … Continue reading
The landmark assessment by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services says that nature and the benefits it provides are in unprecedented decline and can be reversed, but only with a co-ordinated international effort Source: One million species facing extinction, posing a risk to human well-being: UN report – The Globe and Mail