Solar System

We live in an amazing planetary system. From the yawning Valles Marineris on Mars and the subsurface ocean hiding beneath the ice crust of Jupiter’s moon Europa, to the eerily Earth-like terrain of Saturn’s moon Titan, the solar system brims with wonders. And let’s not forget the Sun, with its mysteriously hot corona and its solar flares.

Here you’ll find the latest news from our ongoing exploration of the solar system. Whether it be stunning pictures from NASA’s Curiosity rover or new revelations about planets’ history and formation, we bring you authoritative reports on the coolest and most important developments in planetary science and heliophysics.

New Horizons' scientific payload

Pluto: The Last Picture Show

In his second "insider blog" about the New Horizons mission, principle investigator Alan Stern offers a look at what we might find at Pluto. It sounds like science fiction, but it's not: NASA's New Horizons spacecraft is on final approach to the Pluto system! After 112 months in flight, the fastest spacecraft ever launched...

Alan Stern awaits New Horizons's launch

New Horizons: Navigating to Pluto

In the first of a series of installments written exclusively for Sky & Telescope, New Horizons principal investigator Alan Stern offers his behind-the-scenes perspective on what it took to get the spacecraft to Pluto.

Comet 67P's terrain types

Rosetta Reveals Much About Comet 67P

Once the Rosetta spacecraft arrived at Comet 67P/Churyumov-Gerasimenko last August, European scientists used an array of instruments to assess every nook and cranny of the remarkable two-lobed nucleus.