Sticking with my theme of art and astronomy… Back in March 2012, I posted a remarkable video from NASA’s Goddard Space Flight Center (where I used to work) showing the motion of the Moon and how its ...

In August 1960, NASA launched its first communications satellite, Echo 1. Fifty years later, NASA has achieved another first by placing the ARTEMIS-P1 spacecraft into a unique orbit behind the moon, ...

James Van Allen discovered the two Earth-circling radiation belts that bear his name in 1958. The discovery, based on data from Explorer 1 (the first U.S. satellite), Explorer 3, and Pioneer 3, was ...

In my most recent article for Scientific American, I may have lied to you. In my defense, I didn’t so much lie as maybe oversimplify a tiny bit. I wrote that because of the effects of the tidal force ...

First, authors present the dynamical models and pursuit-evasion orbits used in this paper In this paper, the Earth-Moon rotating frame (EMR) and the circular restricted three body problem (CR3BP) is ...

Despite the apparent intersection of their orbits in two dimensions, Neptune and Pluto's 3:2 orbital resonance prevents them from ever occupying the same three-dimensional space simultaneously.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This story was updated at 3 p.m. ET. NASA is taking a close look at new concepts to send crews on ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. There's something strange going on below the surface of Saturn's Death Star-looking moon Mimas, a ...

The Moon takes the same time (27.3 days) to rotate once on its axis as it takes to orbit the Earth. This is called synchronous rotation. Does this mean we always see the same face of the Moon, and ...

44.5 x 35 in. (113 x 88.9 cm.) ...