Astronomers have found a tiny moon hidden behind the dwarf planet Makemake in the outer solar system. Lowell Observatory in Flagstaff was part of the discovery team.


Astronauts could be at risk for lung diseases if they ever make extended visits to the Moon. That’s the implication of a study that used volcanic soil from northern Arizona as a substitute for lunar dust.


A piece of space junk will fall to Earth over the Indian Ocean late tonight. Arizona astronomers discovered the object and plan to track its fiery descent.


Earthlings will get a visitor from outer space this Halloween as an asteroid makes a close approach.

The space rock was discovered earlier this month by astronomers in Hawaii. It will fly past Earth tomorrow at a distance just beyond the orbit of the Moon.


The principal investigator of NASA’s New Horizons mission will give the keynote speech at tonight’s opening events for the Flagstaff Festival of Science.