In astronomy ‘dark’ is the polite way to describe wild speculation.
This week we wonder if you can made a black hole by accelerating a mass, but then can you un-make it again? Will the Earth ever be tidally locked to the Sun? And can dark matter crush an unsuspecting space ship?
We know there’s dark matter, and there are galaxies, but are there galaxies entirely made up of dark matter? Astronomer Sarah Pearson joins Fraser to talk about what’s out there.
What are galaxy clusters made of, besides galaxies? How can we use them to understand dark matter? And how can we make pretend ones on a computer?
Hayabusa finally kisses an asteroid! Does dark matter talk to itself? more at #365DaysOfAstro
Fritz Zwicky discovered dark matter, gravitational lensing, supernovae and neutron stars. And he also worked on a few more controversial ideas like, uh, tired light. Let’s learn more about Zwicky.
Cheap Astronomy discovers werewolf plankton and then checks whether the Universe still adds up
Could the dark matter simply be hidden? What is the nature of space?