A new paper suggests the outer planets will be dragged away from the Sun and wander through the galaxy after about 100 billion years.
Physicists theorise that a pattern may exist in the distortions of the energy blips from some pulsars. Could a cosmic string be responsible?
A BBC article about the man who's looking out for asteroids and comets that may be heading our way and threatening all life on Earth.
A binary star system got too close to the black hole at the centre of our galaxy and one of its stars acquired phenomenal speed as a result.
Supermassive black holes are huge and incredibly heavy, so why doesn't their extreme gravity consume the entire galaxy?
How cosmic distances are measured and why we need to use them to determine how fast the universe is expanding.
Musing on the picture of the M87 black hole taken by the Event Horizon telescope array in 2019.