Mercury begins a rapid plunge toward the setting sun. By early July, Mercury is lost in the glare of the sunset. By late July, Mars begins to sink into the ...

Mercury will reach its greatest eastern elongation, marking the point where it is farthest from the Sun in the evening sky.

Less than two weeks later, on June 25, reports began to circulate of a second nova blossoming in the southern night sky, this ...

And astronomers have a brand-new, superpowerful eye with which to see the changing cosmos: the Vera C. Rubin Observatory in Chile. The Rubin Observatory released its first images last week, and ...

Both events represent classic novas, which are space explosions that are shorter-lived than supernovas, with such phenomena ...