Ship’s Keel

The Carina Nebula
The Carina Nebula

In 2001 we went on a cruise around South America and I was the ship’s astronomy lecturer. My job was to help the paying passengers do some stargazing and give them some fun lectures about the stars. It was great fun, and I had a marvelous time getting to know the Southern Hemisphere skies along with my shipmates. One of our favorite areas to look was the constellation Carina, which harbors the great luminous blue variable Eta Carinae. This (probable) double star system is on the verge of tearing itself apart, and when it does the view should be spectacular.

The Nebula itself is made up of cast-off material from the star system, and there is evidence of star-forming activity inside the clouds. So, the whole area is being watched with great interest by those who want to understand the mechanics of starbirth and stardeath.

Of course we couldn’t see any of this from the ship — our view was “limited” to the gaspingly beautiful southern Milky Way and the Magellanic Clouds and all the other sights we don’t get much chance to see from the Northern Hemisphere. The sky is just full of great stuff to study, and if you travel a lot, it enhances your visits to other lands.

Headin’ For The Hills

ourtesy of the Mars Exploration Rover
The Columbia Hills on Mars, courtesy of the Mars Exploration Rover

The good news from NASA last week about the extension of the Mars rover missions until September means that we get to see a lot more scenes like this one in the months ahead. I find it pretty cool, and I also am continually amazed at how much like parts of the southwest United States these parts of Mars resemble.

In the next few weeks the rover Spirit will head for the Columbia Hills, which look to be a kilometer or two away. Along the way it will send back more images of the surrounding terrain and the rock field. This is, of course, what the rovers were built to do — be our eyes on Mars. And our geological tools. While there’s nothing quite like walking the dusty plains ourselves, these are the next best thing until we can actually there sometime soon. (Really soon, I wish, but more likely decades away!)

Exploring Science and the Cosmos

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