Dark Matter Annihilation is for WIMPs
Today’s paper searches for signatures of annihilating dark matter in the Milky Way’s satellite dwarf galaxies.
So long, and thanks for all the jellyfish
Today’s paper explores where, when, and how long jellyfish galaxies lose cold gas as they dive into massive galaxies.
Stellar Express: Irregular Moon Delivery
Today’s paper explores how a star flying by the early Solar System could have delivered irregular moons to the giant planets.
Johannes Kepler and the Case of the Disappearing Sunspots
Today’s paper uses Johannes Kepler’s pre-telescope sunspot drawings to re-examine irregular 17th century solar activity.
200 Millionth Anniversary Gift: A Necklace Made of Stars
200 million years after two galaxies began to merge and created one of the most powerful AGN outbursts ever observed, they left behind an arc of star formation resembling beads on a string.