By tracing the corkscrew wobble of two stars as they move through the sky, the Gaia space mission has discovered one new ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

People lived in many parts of the Old World by then but had not yet reached Australia or the Americas. The bulk of the human ...

The new update expands the existing gallery; in a news release, managing director Sean Murray said that there are “billions ...