On the evenings of Jan. 17 and 18, the planets will appear virtually side by side, in what's called a “planetary conjunction.
January's planetary parade may be over, but stargazers in the Hudson Valley may get to see a chance to see more beauty in the ...
Saturn’s rings, imaged here by NASA’s Cassini orbiter, are one of the solar system’s most reliably spectacular sights. But ...
An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...
Space isn’t lawless, but the agreements governing it don’t cover everything nations will have to grapple with as they develop ...
NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer planets of our solar system.
Chorus waves, which affect the safety of astronauts and satellites, have been found in a place where their existence was ...
Twenty years ago, the Huygens probe achieved humanity's first landing on a moon in the outer solar system when it touched down on Titan.