It's almost become expected that many space telescopes and probes can have "extended missions." Both Voyagers are still sending data back 40+ years after their five-year primary mission ended. But ...

In the autumn of 1577, a bright light blazed across the skies of Europe, Asia, and the Americas, igniting wonder, fear, and a revolution ...

In Astronomy's 2022 list of the 20 greatest astronomers of all time, Associate Editor Michael Bakich ranked Tycho Brahe No. 2, second only to Galileo, noting: "Danish astronomer Tyge (Tycho) Ottesen ...

The discovery of a new celestial object in the Earth's neighborhood has created a buzz online asking whether the planet now has a second moon in its orbit. Any thoughts that Earth is now going to be ...

The Orionid meteor shower is expected to peak on the night of Tuesday, October 21. This meteor shower is caused by debris from Halley's Comet burning up in Earth's atmosphere. At its peak, stargazers ...

Giovanni Cassini, director of the Paris Observatory from 1669, utilized a 34-foot Campani refractor to discover Saturn's moon Iapetus on October 25, 1671. Cassini's observations of Iapetus's variable ...

The findings could change how we view planetary systems in their afterlife. A white dwarf star has been caught in the middle of consuming a planetary relic, offering fresh clues as to what happens to ...

"This finding is the first direct evidence of water’s interstellar journey from clouds to the materials that form planetary systems — unchanged and intact." The first-ever detection of heavy water in ...

George Ellery Hale initiated the establishment of Yerkes Observatory in 1892, securing funding from Charles Yerkes for a facility to house two 40-inch telescope lens blanks. Construction commenced in ...