As smaller galaxies collide with our own they’re slowly torn apart. By watching how they spread across the night’s sky we can infer an incredible amount about the shape of the galaxy and the nature of dark matter.
Measuring exoplanet composition by studying a white dwarf’s atmosphere
Earlier than one billion years ago, Earth’s magnetic field had to be driven differently than today. But how? And what can we learn from this about magnetic fields on exoplanets?
Sometimes a mystery can hide in apparently plain things. Astronomers have just discovered that a delta Scuti star known for over 40 years is actually something entirely different and full of peculiarities.
Image via M. Garlick/University of Warwick, ESA/Hubble.
A dwarf irregular galaxy in the Lynx-Cancer void is cannibalizing its neighbors.
A star being swallowed by a black hole, and with an unusual host galaxy.