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Archive for the ‘Nifty News’ Category

(Hi guys, I’m back! Sorry for the long hiatus. I missed you!)

This story has been all over the news: NASA found distinct plumes of methane gas oozing out of certain areas on Mars, like swamp gas or a burp. This means one of two things: either Mars is still geologically active, and not a cold dead has-been of a rock as previously suspected; or there is (or was) something living beneath the surface, eating or producing methane.

This is especially cool because it’s the first time they’ve cited something other than long-ago water as evidence of life. In fact, regardless of whether it’s geology or biology producing the methane, this probably means there are underground aquifers. When we finally send people to Mars, they can dig wells!

A brief window into the world of science journalism…

This story went crazy in the press (the Knight Science Journalism Tracker links to 26 distinct stories and one press release, which is more ink on a single topic than I’ve ever seen on that site), which isn’t surprising–but that’s not how I found out about it. My classmate Lizzie came to class at 8 am yesterday and said, “Lisa, did you hear they found life on Mars?” She had heard about it in an article in The Sun, a British tabloid. I was flabbergasted–how could I have missed something like that!–but couldn’t find any more reliable info.

Turns out that Sun reporter broke the rules. The paper detailing the results was published in Science, which has a strict embargo system. Once a paper is accepted to Science, the researchers aren’t allowed to talk to the press, and no one is allowed to publish a story on it until the instant the paper goes out. But if someone breaks the embargo and publishes early, the story is free game.

In this case, the embargo was supposed to lift at 2 in the afternoon yesterday, January 15. The Sun story came out well before then, but Science decided it didn’t count. They sent out an email to their list of registered science writers saying:

“It has come to our attention that The Sun tabloid has published a teaser-type article that speculates about a forthcoming NASA press briefing, apparently based solely upon a NASA press invitation to that event. The writer of this article is not registered with us, and his report in fact provides little scientific information. It does not reference Science, and it appears to be a purely speculative narrative….In the interests of supporting excellence in science communications, we urge all registered journalists in good standing to adhere to the Science embargo-release time, and refrain from validating this unfortunate tabloid teaser. Thank you for communicating science.”

So there you have it: Tabloids are not news.

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I wrote a ScienceShot for Science magazine’s website Friday! It’s the one at the top, titled “Splish-splash.”

This is the full picture: two shots taken 15 seconds apart by the Huygens Probe, which landed on Saturn’s moon Titan in 2005.

Image thanks to NASA/University of Arizona

Image thanks to NASA/University of Arizona

Astronomers thought those little splotches with the arrows in the right-hand image could have been raindrops–but drops of methane, not water. Titan has a methane cycle the way Earth has a water cycle, with methane lakes that evaporate into methane clouds and return to the lakes as methane drizzle. I bet it smells fantastic. But until now, we hadn’t actually seen any rain.

Technically, we still haven’t. But the long arrow in the bottom left corner of the image points to a genuine methane dewdrop. It condensed on the probe’s cold metal baffle, a little baseball cap-like protrusion that shields the camera from the sun, and then dripped down right in front of the camera. Amazing.

I talked to the author of the paper, Erich Karkoschka at University of Arizona, and another Titan expert at JPL, Robert West at JPL. Neither of them seemed particularly thrilled about the dewdrop. They were more interested in the rest of the paper, which basically said that it wasn’t raining where Huygens landed: the clouds were too wispy, they didn’t find any rainbows, and they didn’t see any actual rain from the sky. Karkoschka said we probably just landed in a dry spot. We’re pretty sure we’ve seen lakes and thunderstorm clouds elsewhere on Titan. He also said there’s a lot of seasonal variation, like monsoons in Arizona–except seasons on Titan last for 30 Earth years.

But the spot where Huygens landed is incredibly geologically rich–in the tiny part of the world it could see from its landing site, it saw hills and plains, sand dunes and river channels. The river channels indicate that liquid flowed through there at some point, but the variety alone is what struck Karkoschka. “Titan may be even more interesting than Earth,” he said.

I tend to leave my personal life out of this Blog O’Science, mostly because it’s not really that relevant. But this is an enormously exciting moment for me, dear readers: this is the first story I’ve ever pitched and sold to a major publication. It happened so quickly it kind of made my head spin: I emailed the editor, David Grimm, on Thursday, and he called me at 10 Friday morning to say he liked the story and wanted it by 2. Whoosh!

Hopefully there will be more of this.

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All right, I told myself I’d restrict my blogging to once a week so I could get my homework done or something, but this is just too cool:

Astronomers finally took a picture of an extrasolar planet.

exoplanet

(I got the image from the press release on EurekAlert.)

I know it just looks like a fuzzy dot, but it’s a gigantic breakthrough. Until now, astronomers only knew the planets were there because their gravitational tug made their parent star wobble, or because they eclipsed the star every so often, dimming its glow. Now that we can take pictures, we’ll be able to figure out what they’re made of, what their atmospheres are made of, how hot they are, all sorts of things! So exciting!

The New York Times coverage is excellent, and includes some colorful quotes. Go give it a read, if you haven’t yet.

But Ryan Anderson (my former Marslab colleague at Cornell) notes the image bears an eerie resemblance to something far more sinister

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lander-goodbyeAshes to ashes, I guess: JPL announced on Monday that the Phoenix Mars lander bit the dust.

We always knew it would end like this. The Martian winter is setting in, and Phoenix won’t get enough sunlight to keep its batteries charged up at the north pole. NASA hasn’t heard from the lander since November 2, and after a week of radio silence, they called it quits.

But they’re saying it’s “an Irish wake, not a funeral”–Phoenix did some awesome stuff! It continued the Mars Exploration Rovers’ tradition of outlasting its expected 90-day lifespan (Phoenix lasted five months; the rovers are approaching their fifth birthday). It found ice just below the surface. It took more than 25,000 pictures. It found evidence that liquid water existed on Mars in the past millennium or so. It even saw snow!

The lander’s accomplishments are summarized in several other places: the JPL press release, the New York Times, and this adorable blog it’s been keeping on Gizmodo, also a good source for lively descriptions of what the lander’s been up to. (This post has a video of Martian clouds. Awesome.)

So this is certainly a time for celebration as much as mourning. But the image of the lonely lander, freezing to death at the edge of a planet, entombed in the very ice and snow it came to study is…well, chilling.

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