Year: 2012

The mysterious shiny particles uncovered by Curiosity’s scoop are from Mars, not the rover.

4:00 pm

The mysterious shiny particles uncovered by Curiosity’s scoop are from Mars, not the rover.

After last week’s plastic encounter, Curiosity’s science team worried the new particles might be man-made. Since they turned up in scoop holes, however, the granules must have been buried in the subsurface. They likely came from larger minerals that broke down. They might also represent the product of some geological soil process that generates a bright but unknown mineral.

These are not the same mysterious objects first seen when the rover began science operations. Those particles were on the surface, and looked like bits of plastic that might have come off the rover or its descent stage.

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A Texas judge is expected to rule today on whether cheerleaders have the right to quote the bible at high school football games.

11:25 am

A Texas judge is expected to rule today on whether cheerleaders have the right to quote the bible at high school football games.

And if he rules they can’t, I say they should go ahead anyway, as they have the right to express themselves no matter what a judge says.

Update: The judge has ruled in favor of the cheerleaders.

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Blue Origin has successfully tested its new hydrogen/oxygen rocket engine.

9:27 am

The competition heats up: Blue Origin has successfully tested its new hydrogen/oxygen rocket engine.

This would be the second new American rocket engine since the 1980s, following SpaceX’s Merlin engine. That it uses hydrogen/oxygen is also significant, as these fuels provide the highest ratio of power to weight. (As far as I remember, the shuttle was the only other spacecraft to use hydrogen/oxygen.)

Post corrected. Thanks Paul!

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The science team for New Horizons is considering shifting the spacecraft’s Pluto flyby away from the planet to avoid orbital debris.

9:20 am

The science team for New Horizons is considering shifting the spacecraft’s Pluto flyby away from the planet to avoid orbital debris.

“We’ve found more and more moons orbiting near Pluto — the count is now up to five,” Stern said. “And we’ve come to appreciate that those moons, as well as others not yet discovered, act as debris generators populating the Pluto system with shards from collisions between those moons and small Kuiper Belt objects.”

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Laura Branigan – Forever Young

6:01 pm

An evening pause: Laura Branigan (1957-2004)

Some are like water some are like the heat
Some are the melody and some are the beat
Sooner or later they all will be gone
Why don’t they stay young?
It’s so hard to get old without a cause
I don’t want to perish like a fading horse
Youth’s like diamonds in the sun
And diamonds are forever
So many adventures couldn’t happen today
So many songs we forgot to play
So many dreams waiting out of the blue
We’ll let them come true

Forever young
I want to be forever young
Do you really want to live forever?
Forever and ever

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Kepler reveals our Sun might be more variable than we imagine

5:13 pm

More exoplanet news: The problems of Kepler.

The article outlines the status — both good and bad — of Kepler in its hunt for Earthlike exoplanets.

I have already reported on Kepler’s failed reaction wheel. It no longer has a backup and needs every reaction wheel it has to keep it pointed in so precise a manner. Thus, the loss of one more wheel will shut the telescope down.

However, I had not been aware that the scientists now need more than twice as much time, eight years instead of three, to do their work, because they have discovered that sunlike stars are far more variable than expected. To quote the article,
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