A distinctive curved marking etched into the Moon’s surface comes into sharp relief this week as winter darkness, crisp air ...

The huge 1,600-mile (2,500-kilometer) wide expanse of the South Pole–Aitken Basin extends considerably onto the far side of ...

The idea sounds simple enough when reduced to its basics. Put reflective surfaces in orbit and redirect sunlight back to Earth after sunset. A Califor.

Earthshine is sunlight that bounces off Earth, travels to the Moon, and then reflects back to our eyes. The Moon essentially ...

Cloud 9 is a failed galaxy. It’s a clump of dark matter, called a dark matter halo, that never formed stars. But this failure could be the key to a mystery almost as old as the universe itself: dark ...

After the Big Bang, the Universe entered a long, dark period before the first stars formed. During this era, hydrogen emitted a faint radio signal that still echoes today. New simulations show this ...

Deep-sky objects shine and the giant planets show off their satellites as the bright light from the Moon disappears from our ...

With the Moon at new early in the week, January delivers some of the darkest evening skies of the season — ideal ...

The iconic 1973 No. 1 album continues to hold the record for the most weeks charted on the Billboard 200. By Keith Caulfield Pink Floyd’s The Dark Side of the Moon — which continues to be the ...

The Moon, which is the nearest astronomical object to Earth, has an intriguing series of phases to which human beings have long held an interest. The orientation of the Moon relative to both Earth and ...