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Stories, updates, insights, and original analysis from The Planetary Society.

After the launch

We just got back from the real post-launch party, following two non-post-launch parties on the last two evenings. This was more like it.

How New Horizons' launch date affects its arrival date

I was looking at that table of launch times for New Horizons and realized that the table included another valuable column of data that I hadn't noticed before: it tells you what year New Horizons will arrive, for each of the possible launch dates.

Cassini, Day By Day

I've just resurrected a feature on the site that has been lost since our redesign: the

Mars Exploration Rovers Update: Spirit Descends Husband Hill as Opportunity Works at a Standstill on Olympia

The Mars Exploration Rovers have each completed their first Mars Year (687 Earth days) and are close to completing their second Earth year exploring their respective sites on the Red Planet. With both Spirit and Opportunity finding new variations of bedrock in the areas they are exploring, the mission is continuing to send the team holiday gifts in the form of intriguing discoveries.

A debate in Meridiani Planum

There was a big news splash about two articles that appeared in Nature about Mars Exploration Rover Opportunity's landing site. The articles suggest two theories for the formation of the layered sulfur-rich deposits at Meridiani Planum that do not involve standing liquid water.

A nap for Venus Express

According to the latest Venus Express Status Reporton ESA's website, the Near Earth Commissioning Phase of the mission has been completed successfully, and the spacecraft is going to be napping for a few weeks as it continues to cruise toward Venus.

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