





Infotainment & Cars - Racine, Wisconsin, USA
As long as I’ve strayed from my usually apolitical path, I’d also like to comment on another subject in the news: the mid-term elections. I would never publicly choose a side, my dears, but I do want to say that I sincerely hope a tone of civility and respect returns to our national discourse on politics and other matters. The continued polarization of our country is stressful and unhealthy. Please treat others as you would like to be treated. Screaming at others because they disagree with you, or demonizing them, just adds to the chaos. Chaos begets chaos. We have enough of that. What we need now is cooperation.
Well, I finally back from a little trip and found Phil Plait's Bad Universe on my DVR. Now going into this I have to start with the disclosure that Phil is an old friend of mine so bear that in mind when I say watch it.The first show is on asteroids and based very closely on his book Death From the Skies. Phil is very much being himself and that is a good thing. He takes great joy in making big explosions to illustrate what would happen if an asteroid were to impact the Earth and to illustrate different techniques to deflect asteroids and comets. A nice touch was using different substances to simulate different types of impactors (and had the added benefit of getting to see more explosions).
He does a nice demonstration with a large Fresnel lens to show how focusing sunlight on a comet could effect it. He uses fruit instead of a comet. I have played with a Fresnel lens of that size and you can melt pennies and even quarters with it. Although they didn't show it, I bet he tried to fry a bunch of other stuff while filming.
Just a couple of quibbles. Toward the end, he talks about the close approach of Apophis in 2029. Aphophis will definitely miss us on that pass. If Apophis passes through a certain "keyhole" as it passes Earth, it could whap us in 2036. However, the odds of this are 1 in 250,000. Would have been nice to have the numbers to show this is still really unlikely (and better observations may totally rule it out).
The second quibble is that the idea of a gravity tug got short shrift. They talk about it a little bit, but I thought it deserved more time since it is probably the best chance we have of deflecting an asteroid.
As for the style of the show, I loved the comic book motif. It really added to the spirit of fun in the show...and the comic version of Armageddon was better than the real movie!
So be sure to check out future episodes...check your local listings for future shows.Between clouds and a trip out of town, it has been a while since I have been able to check in on the ongoing dance of the planets in the west. Saturn is getting pretty low in the sky at sunset now and you have to be quick to see it. Saturn is not up in a really dark sky right now, so you are also fighting twilight. I barely got Saturn tonight.
Click to enlarge. Saturn is sitting just above a palm tree next to the tall spooky tree. Saturn is the one on the right. The bright one to the left of Saturn is a plane. This was a fairly short exposure and the plane was moving pretty much away from me, so it didn't leave a streak. The bright one is Venus of course. Above Venus is the star Spica, the brightest star in Virgo. They are very close together separated by about a pinky width held at arms length (about a degree). Mars is directly to the right of Spica.
You can go out and see this gathering the next few nights. I will leave you with a shot of Venus, Spica and Mars.
Couldn't resist trying my hand at a little Dr. Suess style title for this one. I had to in honor of the new PBS series The Cat in the Hat Knows a Lot About That. Based on the Cat in the Hat's Learning Library, each episode will take on a different area of science.
The Cat is voiced by Martin Short. Mercifully, the whole show does not rhyme, just at the end during the wrap up.
Here's the promo clip.
This mystery object became known as Hanny's Voorwerp and has fascinated astronomers the world over who started studying it with all manner of instruments including the Hubble Space Telescope.
I am not going to post spoilers here, because the whole story is being chronicled in graphic novel form. It will be released at Dragon Con this week. You don't need to go to Dragon Con to get a copy, you can order your own for $5 plus shipping (only a couple of buck to Arizona).
Galaxy Zoo project. While classifying galaxies, she saw a strange green blog. She wasn't the first person to see it (she was the 27th) but she was the first to wonder what it was and start asking a lot of questions about it.
This mystery object became known as Hanny's Voorwerp and has fascinated astronomers the world over who started studying it with all manner of instruments including the Hubble Space Telescope.
I am not going to post spoilers here, because the whole story is being chronicled in graphic novel form. It will be released at Dragon Con this week. You don't need to go to Dragon Con to get a copy, you can order your own for $5 plus shipping (only a couple of buck to Arizona).








You might remember the old days of television weather before we had all these fancy computer graphics. They had weather maps with magnetic numbers and H's and L's for the highs and lows they could move around. When they wanted to show you a satellite photo, they taped it up to the wall and pointed a television camera at it.
When I was growing up, KSFY in Sioux Falls, South Dakota would give away the old satellite photos. You sent in your name on a postcard and if they drew it, you got that day's satellite photo. As a nerdy boy, that was really coo. Fortunately, Sioux Falls was not a major media market and didn't have a lot of competition since I got a couple of them. I still have one of them and just scanned it in to my computer.
I was lucky enough to get the satellite photo for August 7th, 1980 (the date is printed at the top but got cut off in the scan...I thought it was more important not to cut off the bottom of this one!) Hurricane Allen was the first named storm of the season and it was a doozy. It reached category 5 status with top winds of 190 mph making it one of the most powerful hurricanes of all time. Fortunately, it wasn't quite that strong when it made landfall north of Brownsville, it was down to a category 3 storm.
Okay, now I am totally geekin' out here. This hurricane was named Allen. Look at the satellite photo...they called it Hurricane Alan when they wrote the name on the photo! Yeah, a 30 year old, um, well not quite a typo but you get the idea!
Anyway, this is one of those old childhood pieces of geekenss which I still have and treasure to this day, yellowed and fading but a little piece of history.
Reprinted with permission from the Half-Astrophysicist Blog.
in Psychic Phenomena, but I think it couldn’t hurt to get my PhD. “Doctor Zoltar” has such a nice ring to it. If I had stayed in school and taught, I would have been tenured by now, pulling down over 100K annually. But no, I had to answer the call of the wild and that two-bit, toll booth Lothario. I gave him the best years of my life, and in return I received Junior and a stack of bills. Humph!Bad Universe premieres this Sunday, August 29th, at 10pm ET on the Discovery Channel. Here is another preview involving high explosives.
I could have warned them about letting him play with explosives! You will have to watch the show to see the super slo mo replays!
Reprinted with permission from the Half-Astrophysicist Blog.
The Cassini spacecraft just keeps sending back splendiferous images of the Saturn system. It's latest gym is below (get big versions here!)
Cassini is on the night side of Saturn. You can see the sunlight scattering through the upper part of Saturn's atmosphere producing that neat effect. The Moon is Enceladus. Look closely and you see a little blurry streak coming out of the bottom of Enceladus. That is a geyser erupting!
Okay, it gets more interesting. Since we see the night side of Saturn, we should be seeing the night side of Enceladus, so why is it so bright and easy to see? Two things are going on here. First, the imaging team brightened Enceladus by a factor of two relative to Saturn. Second, the Moon is being lit by sunlight reflected from the other side of Saturn...aka Saturnshine. You ever see a slender crescent Moon and the dark side is illuminated just a little bit so you can make out the outline? The dark side of the Moon is being lit by sunlight reflected from the Earth and given the name Earthshine. Same thing here with Enceladus.
Love those Cassini images.Rap is normally not my first choice in music, but there are a few notable exceptions including Baba Brinkman. Last summer I blogged about his excellent album A Rap Guide to Evolution. After creating that piece, he received an email from David Buss, author of Evolutionary Psychology. A collaboration was born leading to the Rap Guide to Human Nature described as a "controversial peer-reviewed comedy hip-hop show".
I love the description on the website.
"How can you use a woman’s cell phone bill to predict where she is in her reproductive cycle? Why are men (but not women) far more likely to risk their lives in public than in private? How does political conservatism help fight infection from parasites? And what does evolutionary psychology have to say about the gangsters and gold-diggers who symbolize rap music in the popular imagination? In The Rap Guide to Human Nature, Baba Brinkman explores the most fascinating findings of evolutionary psychology, the surprising behavorial science of the world's most bizarre primate."
Both the Rap Guide to Human Nature and the Rap Guide to Evolution are available as pay what you will downloads from his website. I have to give you a video of a track from the album, The Short Term Mating Dance.
He has a second new album called Rapconteur which features raps about Gilgamesh, Beowulf, Kalevala, Mosquito, and the Merchant's Tale. I can see high school kids everywhere getting down to Gilgamesh and Beowulf.
Reprinted with permission from the Half-Astrophysicist Blog.
Because we are looking at another potential impact just two days ago on August 20th. This report comes from Junichi Watanabe of Japan using a fairly modest 6 inch telescope and a decent webcam.
So far, no one else has reported this impact and initial follow up observations reveal no impact scar on Jupiter. If it was a small impactor and burned up higher in the atmosphere, it is possible for there to be no impact scar (as was the case with the previous impact).
We still need a lot more data, but if we keep finding them at this rate, we might have to revise our expected impact rate upward a bit (at least for Jupiter!)↓