“Its location at the edge of the solar system makes it a bit of a black hole from a knowledge point of view,” Dr. Craig ...

The solar system’s most distant planet is now at opposition and looking its best. Search it out after dark using optical aid.

Distant planet Neptune passes close to a golden-hued background star this evening, offering a nice color contrast.

At the left, an enhanced-color image of Neptune from the NASA/ESA Hubble Space Telescope. At the right, that image is combined with data from the NASA/ESA/CSA James Webb Space Telescope. The cyan ...

Neptune from Voyager 2 spacecraft, c1980s. The Voyager 2 space probe was launched by NASA in August 1977. The purpose of the Voyager programme was to study the outer Solar System. Artist NASA. (Photo ...

It was just after midnight at mission control center at NASA’s Jet Propulsion Laboratory, and Carl Sagan was exuberant. The Voyager 2 spacecraft had just completed its decade-long mission by making ...

Astronomers may now understand why the similar planets Uranus and Neptune are different colors. Researchers have now developed a single atmospheric model that matches observations of both planets. The ...