#Skyandtelescope

Reanalysis shows that the Hubble Space Telescope's detection of water vapor escaping from Jupiter’s moon Europa might have been a glitch.

Rovers, drones, and landers will usher in a sustained lunar presence, under the new plan NASA announced this week.

A planetary odd couple — a mini-Neptune and a hot Jupiter — probably formed much farther away from their star before migrating closer in.

The Moon, Venus, and Jupiter — the brightest celestial objects after the Sun — form up beautifully in twilight May 18, May 19, and May 20.

Astronomers have identified the likely source of gas that flows into the maw of the Milky Way’s central black hole, Sagittarius A*.

An innovative new mission will probe the mystery of how the Earth’s magnetosphere interacts with the solar wind.

A new model explains how Ganymede got its molten core — which in turn has given Jupiter's largest moon its magnetic field.

New research suggests that Nereid, an unusual moon of Neptune, could be the sole survivor of the satellites that formed with the planet.

Venus and Jupiter draw closer in twilight, and this week they point to Mercury. The waxing Moon shows off rich telescopic detail.

NASA’s Psyche asteroid mission made a course adjustment via a flyby past Mars en route to its final destination. Here's what it saw.

I share my "discovery" of a new Milky Way star cloud that's been staring at me for ages.

Venus and Jupiter blaze in the western twilight. The Summer Triangle marks the eastern sky, and once the Moon is gone, so will the Milky Way.