Voluminous clouds of cosmic dust permeate our galaxy, but only recently has software allowed detailed observations of the ...

Astronomers from the University of Arizona have uncovered astonishing details about a galaxy that existed when the universe ...

The discovery of the dwarf galaxy Andromeda XXXV --located roughly 3 million light-years away and the smallest yet found in the Andromeda system -- is forcing astronomers to rethink how galaxies ...

University of Arizona astronomers have learned more about a surprisingly mature galaxy that existed when the universe was ...

"We thought they were basically all going to be fried because the entire universe turned into a vat of boiling oil." ...

Astronomers at the University of Arizona have discovered more about a surprisingly mature galaxy that existed at a time when ...

When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...

University of Arizona astronomers have uncovered insights into a mature galaxy that existed nearly 300 million years after ...

Researchers have identified a galaxy that existed when the universe was less than 300 million years old. This galaxy, known ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

At the Harvard College Observatory in years around 1900, women were hired to make measurements of astronomical data and do ...

The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.