Scientists studied how cicadas pee. Their insights could shed light on fluid dynamics
Cicadas, and the way they urinate, offer a 'perfect' lab for understanding fluid dynamics at very small scales, researchers say
gravity
Black Holes: Where Reality Beats Fiction
We know that at the heart of pretty much every galaxy, there is a giant black hole. There is a lot that we know about black holes — and a lot that we don't know, says astrophysicist Marcelo Gleiser.
Why Riding An Elevator Is Like Changing Gravity
If you time it just right, tossing a ball in the air as an elevator starts to move, the ball seems to hang in the air for a moment, like gravity had been canceled, says astrophysicist Adam Frank.
3, 2, 1 ... Bake Off! The Mission To Make Bread In Space
On Earth, crumbs are harmless, but in orbit they can be perilous. But bread is a big deal in Germany, so scientists and engineers there are teaming up to create an oven and dough fit for microgravity.
Supermassive Black Holes May Be More Common Than Anyone Imagined
A black hole with about 17 billion times the mass of our sun has turned up in another remote galaxy. Astronomers now think these mass-eating monsters may not be so rare after all.
Scientists Find Hints Of A Giant, Hidden Planet In Our Solar System
Something very big, out beyond Neptune, is warping the orbits of small, icy objects circling our sun. Astronomers haven't seen it yet, but say the culprit could be a planet with 10 times Earth's mass.