Let’s try a demonstration that we all enjoyed in elementary school. Close one eye, hold out your thumb at arm’s length, and align it with an object on the other side of the room. Without moving your ...
Morning Overview on MSN
A rogue planet with no star, astronomers nail its mass and distance
Astronomers have finally pinned down the mass and distance of a lonely world that drifts through the galaxy without a parent ...
The Nature Network on MSN
How astronomers measure distance without travelling anywhere
It’s a bit mind-bending to realise that everything we know about the scale of the universe comes from people stuck […] ...
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