mass

Playing Marbles With The Planets

by Jason Major February 26, 2014

We’ve all seen charts showing the relative sizes of planets and moons compared to each other, which are cool to look at but don’t really give a sense of the comparative masses of the various worlds in our Solar System. It’s one thing to say the Earth is four times larger than the Moon, it’s […]

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New Technique Puts Exoplanets on the Scale

by Shannon Hall February 11, 2014

Astronomers constantly probe the skies for the unexpected. They search for unforeseen bumps in their data — signaling an unknown planet orbiting a star, a new class of astronomical objects or even a new set of physical laws that will rewrite the old ones. They are willing to embrace new ideas that may replace the […]

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When Is a Star Not a Star?

by Jason Major December 13, 2013

When it’s a brown dwarf — but where do we draw the line? Often called “failed stars,” brown dwarfs are curious cosmic creatures. They’re kind of like swollen, super-dense Jupiters, containing huge amounts of matter yet not quite enough to begin fusing hydrogen in their cores. Still, there has to be some sort of specific […]

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The Secret of the Stars

by Jason Major February 27, 2013

“Say, do you like mystery stories? Well we have one for you. The concept: relativity.” Well look at that, it’s a new video from John D. Boswell — aka melodysheep — which goes into autotuned detail about one of the standard principles of astrophysics, Einstein’s theory of general relativity. Featuring clips from Michio Kaku, Brian […]

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Podcast: Mass

by Nancy Atkinson July 16, 2012

Last week we talked about energy, and this week we’ll talk about mass. And here’s the crazy thing. Mass, matter, the stuff that the Universe is made of, is the same thing as energy. They’re connected through Einstein’s famous formula – E=mc2. But what is mass, how do we measure it, and how does it […]

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