The crew of Artemis II is expected to pass a historical marker in space exploration today. Here’s how that “one small step” could move humanity forward technologically — and the geopolitical underpinnings of what this really means.

Astronauts are flying by the Moon’s far side and setting records. Nature is in Houston with the mission’s scientists.

What does Earth look like from the vantage point of Artemis II's astronauts? NASA released a handful of images on Friday of Earth, taken from space by Commander Reid Wiseman and others aboard the

It transports far more than 100 times as much water as all of the Earth's rivers combined: The Antarctic Circumpolar Current rushes around the southern continent unhindered by land masses and is therefore a fundamental component of the climate system.

NASA has released a slew of photos captured by the Artemis II crew as they hurtle through space toward the moon — including an updated version of the iconic “Blue Marble” shot snapped by the Apollo 17 crew more than 50 years ago.

Our breakdown of 7 hidden science lessons in the stunning photo taken by an astronaut on the Artemis II mission.

Exactly when and how plate tectonics started, however, is a matter of debate. Now, in a study published March 19 in the journal Science, rock samples from Western Australia hint that the Earth’s crust may have been moving as early as 3.48 billion years ago, roughly one billion years after our planet formed.

Astronauts on the Artemis II mission will head around the moon April 6, going farther than humans have ever gone before.