Testing the Robots that Might Explore Europa

Europa, one of the four Galilean satellites of Jupiter is one of the most intriguing locations…

Einstein Predicted How Gravity Should Work at the Largest Scales. And He Was Right

When Albert Einstein introduced his theory of general relativity in 1915, it changed the way we…

NASA, SpaceX Illustrate Key Moments of Artemis Lunar Lander Mission

Before the decade is out, as part of the Artemis Program, NASA plans to send astronauts…

NASA Releases its Moon Phases Animation for 2025

Every year, NASA releases a detailed simulation of the Moon that shows how it will change…

The Last Arecibo Message Celebrates the Observatory and One of its Greatest Accomplishments

The Arecibo Message, transmitted on November 16th, 1974, from the Arecibo Observatory, was humanity’s first true…

A Nearby Supernova Could Finally Reveal Mark Matter

Despite 90 years of research, the nature and influence of Dark Matter continue to elude astronomers…

Astronomers Find a 3 Million Year Old Planet

Astronomers have just found one of the youngest planets ever. At only 3 million years old,…

There was Hot Water on Mars 4.45 Billion Years Ago

Earth and Mars were very similar in their youth. Four billion years ago, both planets had…

Axion Dark Matter May Make Spacetime Ring

Dark matter made out of axions may have the power to make space-time ring like a…

Earth’s Old Trees Keep A Record of Powerful Solar Storms

Most of the time the Sun is pretty well-mannered, but occasionally it’s downright unruly. It sometimes…