Speaking of dark matter, astronomers have uncovered a pretty interesting mystery involving it. Or rather, not involving it: They’ve found a galaxy that apparently has little or no dark matter in it.
Galaxies aren't alive. It can be a useful metaphor they are born, they live, they die but animism shouldn't be used literally with them.
And yet, some have a double helix. Shades of DNA!
In this case the double helix is quite literal, though it's not a genetic blueprint, of course. Still, studying it can reveal much about what happens at the galaxy's heart, where a dark monster rages and spews.
An extraordinary galactic jet ejected from a supermassive black hole boasts a corkscrew-like helical structure, new ground-based telescope views reveal.