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Comet Siding Spring Mars encounter: Cosmic bully spotted by ESA and NASA

ESA Mars Express Team • March 31, 2014

Hubble has taken some great new images of our 'friend,' Comet Siding Spring, due to pass by Mars at less than 136,000 km on October 19 – less than half the distance between Earth and our moon.

Comet spotted! Rosetta's first sight of Churymov-Gerasimenko since wakeup

Emily Lakdawalla • March 27, 2014 • 2

Rosetta has turned on its cameras and sighted its comet for the first time since waking from hibernation. Next activity: waking the Philae lander.

Comet Siding Spring Mars encounter: Ya gotta have a little ‘tude

ESA Mars Express Team • March 24, 2014

In the latest update on how the Mars Express flight control team is planning to deal with Comet Siding Spring is all about attitude -- and hiding behind the biggest guy in the fight.

Comet Siding Spring Mars encounter: How to determine the orbit of a comet?

ESA Mars Express Team • March 12, 2014 • 2

In the quest to track Comet Siding Spring, the Mars Express team tells us how computing the orbit of a comet isn't as straightforward as science fiction would have us believe.

The Very Large Telescope sights Rosetta's comet target, sees activity beginning

Emily Lakdawalla • March 10, 2014

Rosetta's comet target, 67P/Churyumov-Gerasimenko, has emerged from behind the Sun as seen from Earth, and the Very Large Telescope has photographed it. The new images show that cometary activity has already begun as Rosetta approaches for its August rendezvous.

Hypervelocity Cratering and Riding Out the Risk

ESA Mars Express Team • March 06, 2014

Today's update from the Mars Express team contains the realisation that, for some of the risks associated with October's Siding Spring flyby, there may not be much the team can do.

Space is really, really big – except sometimes it isn’t

ESA Mars Express Team • March 04, 2014

Here's the next installment in the continuing story of how the Mars Express team is preparing for Comet Siding Spring flyby, 19 October 2014. This week: introducing the spacecraft's subsystems and structure – and wondering how we can absorb impacts.

Comet Siding Spring Mars encounter: Why orienting Mars Express is the heart of the challenge

ESA Mars Express Team • February 28, 2014

Today's post continues where we started last week with an update from the Mars Express Flight Control Team at ESOC on their preparations for the 19 October Comet Siding Springs flyby. Today: defining the challenge!

Mars Express team readies for Siding Spring

ESA Mars Express Team • February 26, 2014 • 3

On Sunday, 19 October 2014, at around 18:30 UTC, comet C/2013 A1 – known widely as 'Siding Spring' after the Australian observatory where it was discovered in January 2013 – will make a close fly-by of Mars.

Intro Astronomy Class 1: Tour of the Solar System

Bruce Betts • February 11, 2014 • 1

Take a tour of the Solar System in the video of class 1 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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