Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

Experts have confirmed that the mysterious object hurtling towards us, previously dubbed A11pl3Z, is an "interstellar object.

Interstellar object headed towards Mars, but poses no threat to Earth, says head of planetary defence at the ESA.

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System – only the third ...

In a rare astronomical event, astronomers have confirmed the passage of an interstellar object through our solar system.

The interstellar object has been named 3I/Atlas by the International Astronomical Union’s Minor Planet Center.

News about International Astronomical Union. Commentary and archival information about International Astronomical Union from The New York Times.

The International Astronomical Union is a worldwide society of professional astronomers and is considered the authority for assigning names to celestial objects, whether they are planets or moons ...

The International Astronomical Union voted Thursday encouraging space organizations across the globe to collaborate on a timekeeping standard for the moon, where one day lasts 29.5 Earth days.

Our peer-reviewed reports present the evidence-based consensus of committees of experts. Published proceedings record the presentations and discussions that take place at hundreds of conferences, ...

The National Academy of Sciences is the U.S. adhering body of the International Astronomical Union (IAU) and it maintains its relationship with the union through the U.S. National Committee (USNC)/IAU ...