mass
New Technique Puts Exoplanets on the Scale
Astronomers constantly probe the skies for the unexpected. They search for unforeseen bumps in their data — signaling an unknown…
When Is a Star Not a Star?
When it's a brown dwarf -- but where do we draw the line? Often called "failed stars," brown dwarfs are…
The Secret of the Stars
"Say, do you like mystery stories? Well we have one for you. The concept: relativity." Well look at that, it's…
Astronomy Cast Ep. 269: Mass
Last week we talked about energy, and this week we’ll talk about mass. And here’s the crazy thing. Mass, matter,…
Atomic Mass Unit
[/caption] Believe it or not, there are actually several atomic mass units … however, the one that's standard – throughout…
Earth’s Mass
[/caption] The Earth's mass is 5.9736 x 1024 kg. That's a big number, so let's write it out in full:…
How Many Atoms Are There in the Universe?
It's no secret that the universe is an extremely vast place. That which we can observe (aka. "the known Universe")…