Astronomers are delving into five cosmic enigmas that challenge our understanding of the universe: the suspected Planet Nine beyond Neptune, a runaway...

Astronomers are delving into five cosmic enigmas that challenge our understanding of the universe: the suspected Planet Nine beyond Neptune, a runaway...

In the contemporary Universe, massive galaxies are plentiful. But the Universe wasn’t always like this. Astronomers think that galaxies grew large...

In the contemporary Universe, massive galaxies are plentiful. But the Universe wasn’t always like this. Astronomers think that galaxies grew large...

Astronomers have made an exciting discovery: they’ve spotted two galaxies in the process of merging, a cosmic event that happened 12.8 billion years...

Like two Sumo wrestlers squaring off, the closest confirmed pair of supermassive black holes have been observed in tight proximity. These are...

For the first time, astronomers have captured detailed images of a star other than the sun, showing the motion of hot, bubbling gas on its surface....

For the first time, astronomers have captured detailed images of a star other than the sun, showing the motion of hot, bubbling gas on its surface....

This is an extremely important test of cosmology, and can tell us whether or not our fundamental assumptions about the structure of the Universe are...

This is an extremely important test of cosmology, and can tell us whether or not our fundamental assumptions about the structure of the Universe are...