RIP Venus Express

Artist’s conception of Venus Express above Venus (ESA)

Tomorrow I will write the obligatory annual post about whom we lost in 2014.  It’s always a solemn occasion which highlights the passing of many eminent figures (as well as the passing of yet another year) and raises troubling questions about what is truly important.  But before we get to the human obituaries, I wanted to write a quick eulogy for an underappreciated figure lost to little fanfare at the end of 2014.  Last month the robot explorer craft “Venus Express” was destroyed by falling into the volatile high-pressure atmosphere of our sister planet Venus (an operatic end which overshadows all but the greatest human deeds).  The Venus Express was a satellite launched by the European Space Agency in November 2005.  It reached polar orbit around Venus in April of 2006 and has been continuously sending back data since then until November 28^th of 2014 when the last remaining fuel in the satellite was used to lift it into a high orbit.  Scientists planned on monitoring the space probe during its long drift down to the top of the atmosphere, but something went wrong and the satellite was thrown into a spin (which made it unable to contact Earth).  It is now presumed destroyed.

Venus Express was the first Venus mission undertaken by the ESA.  Now that the craft is gone, the human race has no functional probes or spacecraft on or around Venus until the Japanese climate orbiter “AKATSUKI” is scheduled to reach there sometime in 2015 (although there have been some problems with that mission and the planned rendezvous may be postponed…or never happen).

This still from a NASA animation of a concept Venus mission shows a probe, one of many, beginning its descent into the Venus atmosphere.

Venus’ atmosphere is believed to have once been much like that of Earth.  This is certainly not the case now! The data from Venus Express is now being analyzed in order to ascertain what happened to transform Venus into a hellish greenhouse (and strip it of its magnetosphere).  Maybe we can also analyze this data with an eye on future sky colonies as well.  Venus Express discovered hydroxyls in the atmosphere of Venus. It also discovered an ozone layer and a high cold atmospheric layer which is possibly dry ice.  It undertook a series of aerobraking experiments which could prove very relevant to future craft inserted into Venus’ atmosphere.  We need someone to analyze this data and plan those future missions! Speaking of which, why doesn’t NASA have more exploratory missions planned to this nearest planet?  We should try to put a long-term floating probe into the upper atmosphere of Venus itself!  That would be an amazing accomplishment and it would tell us more about whether floating sky colonies above Venus would even be possible. Nothing is more alluring than Venus!  Let’s honor the Venus Express by learning from it and sending some more missions there pronto!

The Birth of Venus (Henry Courtney Selous, 1852, oil on canvas)

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