
This Coming Sunday November 6th ..Daylight Savings Time again.
Don't forget to turn your clocks back!
Infotainment & Cars - Racine, Wisconsin, USA

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Curiosity is the next rover headed to Mars. It is much larger than the previous rovers, Spirit and Opportunity and will carry a much larger suite of instruments. Although Curiosity is not designed to directly look for life on Mars, it will continue our attempts to determine if Mars had life on it in the past and if there are any pockets where life could still exist. It's nuclear power source will let it cover a lot of ground and power more advanced instruments (and it won't have solar panels that can get covered with dust!) It will be able to drill into rocks and scoop up soil and dust to analyze.
A rover this large can't land with airbags. It has a really cool crane type system that will lower it to the surface of Mars while the crane unit is held aloft by rockets. Kind of hard to envision, so here's the really cool animation. As you watch the video, remember this all has to happen automatically. Real time communication is not possible at that distance so there is no chance to fix any problems that may develop!
150 Twitter users have been selected to attend the launch tweetup. We will spend November 23rd touring the Cape, talking to mission scientists and trying not to get into too much trouble. We will have a day off on Thanksgiving before watching the launch from the media center on November 25th. Of course we will all be tweeting and blogging about our tours and the launch. You can follow me on twitter @halfastro (for my facebook friends, all tweets are automatically posted to facebook). You can also follow @marscuriosity, @nasatweetup or the #nasatweetup has tag.
Obviously, I will be blogging and tweeting a lot that week!I didn't know I was grateful
for such late-autumn
bent-up cornfields
yellow in the after-harvest
sun before the
cold plow turns it all over
into never.
I didn't know
I would enter this music
that translates the world
back into dirt fields
that have always called to me
as if I were a thing
come from the dirt,
like a tuber,
or like a needful boy. End
Lonely days, I believe. End the exiled
and unraveling strangeness.Just getting caught up after my Florida trip. The last night I was there, I went out for sunset as I do many nights. Each night brings something a little different. Tuesday night's sunset showed off how Earth's atmosphere refracts sunlight and can distort its shape.
As sunlight passes through Earth's atmosphere, its path is bent thought a process called refraction. You have probably seen refraction before. It's the same process that causes a pencil to appear bent when it is partially submerged in a glass of water and the same process that your eyes (and glasses if needed) use to focus light. In the Sun's case, refraction causes the Sun to appear a little higher in the sky than it would if Earth had no atmosphere.
But the Sun is not a point source. Near sunset, light from the upper limb of the Sun passes through less atmosphere than light from the lower limb of the Sun. That means light from the lower limb of the Sun is shifted upward more than light from the top limb of the Sun. The upshot of this is that the Sun will appear to be squeezed vertically and appear much fatter the lower it gets in the sky.
This effect was pronounced on Tuesday. I took a bunch of my photos and put them into a short video. The pictures are not equally spaced in time (I tend to take pics more frequently as the Sun gets lower and a rapid burst near the end of sunset). You also may notice when I change camera settings due to the changing lighting conditions as the Sun sets. And you can look see some birds flying across some pics. Really watch the last frames and you can see the last tip of the setting Sun gets very stretched horizontally.

Tonight after sunet, I kept shooting some photos. Venus is becoming an evening object again and Mercury is putting in an appearance as well. It took some shooting, but I got both of them together in one shot (click to enbiggen).
Venus is near the top of the photo and Mercury is almost directly beneath it (offset a touch to the right). Mercury is very dim so look close.
These to planets are going to get much closer together and be about 2 degrees apart in early November and stay that close until about mid-November. Although they are very close together, they never have a true conjunction since they never have the same right ascension. It will still be a very scenic pairing that you can watch over the next couple of weeks. Mercury will get easier to see as it rises higher in the sky. Right now, it is definitely a test of your eyesight!
Reprinted with permission from the Half-Astrophysicist Blog.
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