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

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.

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system. The object—which orbits out beyond Neptune—has been named "2017 OF201" by the ...

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 triennial conference of the International Astronomical Union, representing 27 countries, will be held at Stockholm during the week August 3–10 under the presidency of Prof. E. Esclangon ...

The International Astronomical Union recognized 128 newly discovered moons orbiting the ringed planet. By Laura Baisas. Published Mar 12, 2025 10:00 AM EDT. As of March 2025, Saturn has 274 known ...

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be fair—but one of the largest yet discovered and with an orbit around the Sun that ...

An analysis of the International Astronomical Union’s (IAU) database has also revealed that only 32 (2%) out of 1,578 known Moon craters bear a woman’s name.

The International Astronomical Union reclassified Pluto as a dwarf planet because it does not clear its orbit of other debris. Pluto was the little planet that could — until it couldn’t.