Articles

Stephen J. Pyne

The Voyagers were special when they launched. They have become more so thanks to their longevity, the breadth of their discoveries, the cultural payload they carried, and the sheer audacity of their quest.

Casey Dreier

The Advanced Stirling Radioisotope Generator (ASRG) is no longer an option for powering a potential Europa mission. The ASRG uses Plutonium-238 to generate electricity, but is far more efficient than past RTGs.

Sarah Hörst

By now I hope that everyone has seen some of the spectacular images of the Saturn system (and especially Titan!) from the Cassini-Huygens mission. However, the measurements that often make my heart race are taken by instruments that reveal Titan in ways that our eyes cannot see.

Alan Stern

New Horizons has just completed a summer of intensive activities and entered hibernation on Aug. 20. The routine parts of the activities included thorough checkouts of all our backup systems (result: they work fine!) and of all our scientific instruments (they work fine too!).

Emily Lakdawalla

In which the fifth graders of Kipp Heartwood Academy argue the competing sides in the is-Pluto-a-planet debate through the medium of rap.

Emily Lakdawalla

A lovely view of the ringed planet and its hazy moon seen from nearly behind them just a few days ago.

Ted Stryk

This is a parting shot of Jupiter and Io, taken December 5, 1973, by the Pioneer 10 spacecraft, the first to see either world as a crescent.

Emily Lakdawalla

Does Pluto have an ocean under its ice? If it doesn't now, did it ever have one? How will we know?

Bill Dunford

Pushing back the frontier, and filling in the blank spaces on the map.

Emily Lakdawalla

My roundup from notes on the day's presentations on dust in the Pluto system and the surfaces and interiors of Pluto and Charon.

Bill Dunford

Robotic space exploration is human exploration. Meet one of the people behind the machines.

Emily Lakdawalla

Here it is: the view from Saturn of our Earthly home, one and a half billion kilometers away. We see Earth and the Moon through a thin veil of faintly blue ice crystals, the outskirts of Saturn's E ring. Earth is just a bright dot -- a bit brighter than the other stars in the image, but no brighter than any planet (like Saturn!) in our own sky.

Emily Lakdawalla

I'm off for the airport to fly to the East Coast to participate in the scientific conference

Casey Dreier

The New Horizons mission to Pluto survived many near-death encounters with cancellation during its development. The Planetary Society worked the whole time to ensure it would launch.

Mat Kaplan

You can be part of a planetwide group photo as Cassini and MESSENGER turn their cameras Earthward on July 19.

Emily Lakdawalla

Pluto's moons, formerly known as

Bill Dunford

An

Bill Dunford

Meet some worlds that were nearly shattered, literally.

Emily Lakdawalla

This is extremely good news: after more than a year of analysis, the New Horizons mission and NASA have concluded and agreed that New Horizons' originally-planned trajectory past Pluto is likely safe from dust.

Bill Dunford

Nothing reflects the romance of deep space exploration more than the evocative names of places on the planets and moons.