The four planet-strong "planet parade" currently visible to the naked eye in the night sky for a short time after sunset will ...

Two such lunar canyons, Vallis Schrödinger and Vallis Planck, stretch over 270 km (168 miles) each, with depths of 2.7 km ...

The space station and one other Easter egg — the site of NASA's next human moon landing — are hidden in this lucky photo.

The SpaceX Falcon 9 rocket launch created a visual sensation for sky watchers Monday evening in Stanislaus County. The rocket ...

President Trump signed an Executive order that will put pressure on Iran. The president said he was torn about this one but ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons on the far side ...

Mauna Kea When you think of the tallest mountains, instinctively, Mount Everest comes to mind. But here's a shocker: Mauna ...

For thousands of years, the Moon has been a constant presence in the night sky, silently observing Earth and the unfolding of human history. A significant chapter of that history was written on the ...

Out of 28 chapters, three concern the Alger Hiss-Whittaker Chambers Case. The literature on this historical episode is sadly ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The Blue Ghost ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...