News from the Astronomy Front

We live in a pretty amazing age, although I suppose people in every age think their own times are amazing. But, I have to count an age where we (humans) can reach out and explore other planets and distant stars and galaxies seemingly as readily as we turn on the computer as amazing.

Going over some recent press releases that have landed in my mailbox, I see a story about water ice on Mars—not a big surprise, we know there’s water on Mars, but now we are getting a better feel for how much and how it is distributed (paricularly as underground ice) on the Red Planet. That one broke earlier today, and you can see the full story and pictures here. Now, you might wonder why this is a Big Deal. I mean, we detect ice on our planet all the time. But, again—astronomers reached out with a specialized camera across from Earth to Mars, and were able to tease out data about underground ice on a planet we haven’t even personally set foot on yet. THAT is amazing.

Also released today from the European office of the Hubble Space Telescope is a great image of the globular cluster NGC 2808. It’s a great picture, very pretty! And, it reveals that (for this globular cluster anyway) star birth is NOT a thing of the past.

Globulars are typically the oldest members of our galaxy’s system, born when the Milky Way was, and astronomers thought all the stars in a globular were the same age. For THIS globular, however, there are three generations of stars, implying that instead of one big burst of stars, it had three baby booms. This upsets the conventional theories about globular cluster formation, and we get another great pic of a globular in the process, using a telescope that reaches out across thousands of light-years to tell us a story about stars as they formed some 12 billion years ago!

Read more at the European homepage for the NASA/ESA Hubble Space Telescope.
Read more at the European homepage for the NASA/ESA Hubble Space Telescope's look at this globular cluster, NGC 2808.

Speaking of stellar ages, the folks at Lowell Observatory in Flagstaff, Arizona, announced a new method for determining very accurate ages of stars based on how fast they rotate. Why would you want to know how old a star is? If it has planets, knowing its age helps you put a timetable on the planets’ ages and how their evolution is proceeding. That’s a large and very important part in the study of any planets actually—how they change over time. The rotation rate of a star, as it turns out, is a function of its age and color. If you measure the rotation period and the color, for example, you can calculate the age of the star.

Finally, although it’s not entirely new news, the recent announcement that astronomers using the European Southern Observatory have discovered the most Earth-like planet around another star is a new benchmark in planet searches. Stars are large and bright, and their light can hide planets that orbit close by. We usually have to use indirect methods (like taking a spectral measurement of the star’s light and then measuring any “wobbles” in the spectrum that indicate the gravitational tug of a planet on its star) to find exoplanets. Most of the exoplanets you’ve heard about are Jupiter-like (ie. big and gassy) planets. This new one is more Earth-like, and astronomers think that it may have water in its atmosphere. That doesn’t mean it has life, but water is an important factor for the creation of life as we know it. Stay tuned on that one.

Hey AP!! We are IN the Cosmos

We are PART of It!

Phil Plait over at the Bad Astronomy Blog is always battling dumb portrayals of science in movies, on TV, in the media, etc. You know what I’m talking about—wrong lunar phases in movies, stupid things like having Barbie say “Math is hard!” and mis-statements about physics and astronomy in newscasts. It happens every day, and nobody in the media really gives much of a hoot because to them, science is just another beat, another story, another “weird” thing to write about to keep people from worrying too much about all the other problems in the world. Don’t wanna write about the White House breaking the law cuz it’s too hard on one’s reportorial skills or the editor doesn’t want you to? Well, hey, let’s write a story about weird science. That’ll deflect people’s attention! Don’t understand anything about astronomy or physics or math, Mr. or Ms. Reporter? Doesn’t matter as long as you have a snappy lead, right? (And, just for disclosure, I consider myself a journalist too, even got a degree in journalism and mass communications—so I know their jobs and I know their beats. But I still get to call shenanigans on ’em!)

Okay, so I’m a bit cynical about media portrayals of science and misuse of science terms in movies, TV and news. Wouldn’t you be if your profession were continually misrepresented by the media? If you’re a scientist, you continually read really silly stereotypes about science and scientists, like the one about how scientists are just geeks. Or you go to movies and see scientists being portrayed as loners, or evil geniuses, or lonesome weirdos working at the frontiers of science. Wearing pocket protectors. And thick glasses.

It’s kind of like being an atheist and reading stories about how atheists supposedly worship Satan (hello!! atheists profess no belief in any deity, and last time I looked, Satan was supposedly the Lord of the Underword in several mytho-romantical religious cultures). Or being a Muslim and finding out in the media that you’re a bloodthirsty bomber, or being a Christian and reading that all Christians hate everybody, or being a woman and reading in the media that all women want or need is a good man, or being a teenaged girl and finding out that your biggest goal should be to look anorectic so you can attract boys. Or… well, I could go on and on. Stereotypes and mistakes in the media are an annoyance, but if people who read and watch media are well-educated enough, they can look beyond the stereotype. (And the sad state of science education in my country is another tangent I could go off on, particularly since it seems that many reporters don’t take ONE class in science when they’re in J-School… but I digress…).

What got me up on my Science Mistakes Soapbox today? Reading CNN.com. Which kind of surprised me, because usually their science stories are pretty good and reasonably accurate most of the time. They don’t make the usual bone-headed mistakes that I see so often in much of mainstream media.

So, today I was reading about Sunita Williams, one of NASA’s astronauts on the International Space Station. She was all over the news last week (at least in Boston) because she ran the Boston Marathon in space while the race was being held here on Earth. There was lots of cool coverage about her training and how she’d run it on the treadmill while whirling around the planet at 17,239 miles per hour (27,273 kilometers per hour). Today’s story (which you can read here), talks about Sunita catching a ride home soon, if the Atlantis shuttle launches on time.

The part that set me off on this discussion was the last part of the first sentence (called the “lead” in J-talk), which said:

“…so she doesn’t have to spend more than six months in the cosmos.”
In the cosmos??? That one definitely jarred my attention, and I asked myself, “Okay, what part of “cosmos” doesn’t the story writer understand?”

For those of you following along at home, here’s a nice definition of the word at Dictionary.com. It cites the American Heritage Dictionary’s definition of “cosmos” that says, in part:

“the universe regarded as an orderly, harmonious whole.”

The use of the word “cosmos” in the CNN story is wrong. And you don’t even have to be a scientist to know it. Any reasonably well-educated person should know what the word “cosmos” means, right? Probably the writer didn’t want to say “outer space” or “on orbit” (although I don’t know why not). But, substituting the word “cosmos” is just plain wrong. We’re already IN the cosmos! Earth is part of the cosmos. Low-earth orbit is part of the cosmos.The flowers in my yard are part of the cosmos.

The tale comes from the Associated Press, which I used to admire quite a bit for its accuracy and good writing. But, it seems they’ve let their standards slip a bit. I think that somebody’s writer is a little non-cosmos-mentis. and shame on CNN for just running it as is, without correcting the mistake.

Exploring Science and the Cosmos

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