On November 21, 1676, the Danish astronomer Ole Rømer discovered the speed of light. Before Rømer figured it out, scientists ...

While astronomers have taken about two dozen zoomed-in images of stars in our galaxy, unveiling their properties, countless ...

And before that, it appeared in 1866—showing up around every 80 years ... So, viewers are facing a limited window to see it.

The Starlink satellites are most obvious at twilight just after they've come off the top of their launch rocket Astronomy is finally putting up a co-ordinated ... astronomy is facing a watershed ...