Slashdot Mirror
Discovery Increases Odds of Life On Europa
tetrahedrassface writes "Observations of spectral emissions from the surface of Europa using state of the art ground based telescopes here on Earth have lent data that indicate the surface of the Jovian moon is linked with the vast ocean below. The observations carried out by Caltech's Mike Brown and JPL's Kevin Hand show that water is making it from the ocean below all the way up to the surface of the moon. In their study (PDF) they noticed a dip in the emission bands around lower latitudes of the moon, and quickly honed in on what they were seeing. The mineral of interest is epsomite, a magnesium sulfate compound that can only come from the ocean below. From the article: 'Magnesium should not be on the surface of Europa unless it's coming from the ocean,' Brown says. 'So that means ocean water gets onto the surface, and stuff on the surface presumably gets into the ocean water.' Not only does this mean the ocean and surface are dynamically interacting, but it also means that there may be more energy in the ocean than previously thought. Another finding is that the ocean below the icy surface of Europa is basically very similar to an ocean on Earth, giving the neglected and premier solar body for life past Earth another compelling reason for being explored."
and a series of flybys began in the 1970s. Pioneer 10 and 11 visited Jupiter in 1973 and 1974 respectively.
Two Voyager probes traveled through the Jovian system in 1979 providing more detailed images of Europa's icy surface. The images caused many scientists to speculate about the possibility of a liquid ocean underneath.
Starting in 1995, the Galileo probe began a Jupiter orbiting mission that lasted for eight years, until 2003, and provided the most detailed examination of the Galilean moons to date. It included, Galileo Europa Mission and Galileo Millennium Mission, with numerous close flybys of Europa.
Neglected indeed.
Not.
(Paraphrased from Wikipedia)
Sent from my ENIAC
It doesn't matter how well you do in your endeavours if we continuously push 'Chance of life' as a way to get the general public interested. How many times do you think the public can hear about 'Nope, nothing there' when the original headline was 'Amazing new possible discovery that will rock the foundations of the space program". Don't get me wrong, I find the concept of alien geology to be very interesting and love these stories, but please cut back on the 'hints/signs/rumor/promise of life' in headlines.
Before anyone responds with "But we have to make it interesting for the unwashed masses...", I'm going to preempt that with the fact that you don't want space exploration to be relegated to the same 'Overhype/Overpromise' location in the collective consciousness currently reserved for late night infomercials and miracle health products.
Out of modpoints but really liked a post? 1BDkF6TtmmeZ3yqXbz9yhdYVqRYnwFoXDj
Sadly, so did I, thinking that they finally left Leeds and discovered the existence of Amsterdam.
Quo usque tandem abutere, Nimbus, patientia nostra?
I was more disturbed by the mention of "lent data" from ground based telescopes, which sounds like certain kinds of data collection were given up until Easter.
Almost certain he gets more probing as well.
Sent from my ENIAC
Just spread the rumor that Europan whales make the best sushi in the Universe and the Japanese will launch a mission to Europa within the year. As an added bonus Iceland would start a space program.
It's things like Europa and robots on Mars that make me want to punch the 'Cry, cry, we need to put a man back on the moon, because something!' crowd.
Was the Apollo program a heroic piece of engineering? No question. But does the moon have any major virtues aside from being close enough to man-in-a-can with relatively primitive life support gear? It's a hostile, sterile rock with not a whisper of atmosphere(and conveniently close and well-lit for the telescope crew). We have basically no reason to suspect that it has, or ever had, anything approaching life. Mars is a practically shirtsleeves environment by comparison, and Europa is under serious suspicion of having some serious organic chemistry going down under the ice. What sort of grainy, sepia-toned nostalgia wankfest would have us putzing around the moon, again, when there is other cool stuff to poke at?
"lent data"??? "honed in"????
Not sure what's up with "lent data". (Typo of "sent data"? Odd translation of an idiom from a non-English language?)
I've heard the "honed in" misusage a lot. It seems to be a Mondegreen> from "homed in" (like a homing pigeon.)
Lent is the past tense of lend. Data from one discovery was lent to a totally different theory.
Honed in is fairly common usage when working toward a goal.
The so called "translation" is from a language called English, with which it appears you are only tangentially acquainted.
Sig Battery depleted. Reverting to safe mode.
My God! It's full of Starfish!!!
Rule of Acquisition #19: Satisfaction is Not guaranteed.
'Hone' means to focus in or to work towards a specific goal, and is listed in reputable print dictionaries (i.e. http://www.merriam-webster.com/dictionary/hone%20in). Honed in is the past tense of hone in. It is true that some people think it is wrong, and that opinion is open to debate, as it should be for any living language. But the deciding factor is whether the intent of the phase is understood by the majority of readers. Since it is in common use, it follows that it has become accepted phraseology.