Need Listeners' Astronomy Questions for “Fraknoi’s Universe”

With veteran talk-show host and ABC-radio newscaster Gil Gross, we are starting a new series of podcasts to be called “Fraknoi’s Universe.” (It helps to have an unusual last name!)

The pilot episode (made last summer about the total eclipse of the Sun): https://districtproductive.com/fraknois-universe/ was a success on a number of CBS radio stations, and on the Web. So we are starting to record further episodes, discussing the latest news and discoveries from the worlds of astronomy and space exploration.

As part of the program, we’d like to answer general astronomyquestions from interested members of the public. If you have a question (focused on astronomy and space) that you’d like to ask, please e-mail me at:

foothillastroprof@gmail.com

 Be sure you include your full name and home town, so we can mention it on the air.

Feel free to pass this on to others interested in astronomy.

When the shows are ready, we’ll announce them here and on other social media. 

Thanks very much.

A Short Eclipse Mega-movie Already Available

A first 2.5-minute version of the Google Eclipse Megamovie is now out and can be viewed at:

https://www.youtube.com/watch?v=f7BCzm4IGpY

This is actually version 2, which shows a map at the bottom right indicating where along the path of the total eclipse in the U.S. each image comes from. The team soon expects to have a much longer version with many more pictures taken during the 1 hour 37 minutes that the eclipse was over the continental U.S. stitched together.

So far over 6,000 images from the serious photographer volunteers, over 11,000 images via the online image upload from the public, and over 45,000 images via the App the team developed have been received, according to a message I got minutes ago from project leader Laura Peticolas of the University of California, Berkeley's Space Sciences Lab. What a nice example of citizen science!

I hope you all had good eclipse viewing Monday. I was in central Oregon with family and friends, and got a spectacular view of the total eclipse, with beautiful red prominences (great fountains of hot material being driven outwards from the surface of the Sun) visible through binoculars. The attached image above, from one member of our group, Dr. Cary Sneider, gives you a little taste of what we saw.

The other attached image, below, by Anna Rich, shows a car on the highway, on its way home from Oregon, expressing a sentiment many felt.

For anyone who missed the lead-up to the eclipse, a fun way to get caught up might be my conversation with veteran newscaster Gil Gross, at: http://fraknoisuniverse.libsyn.com/website

This eclipse special might be the first of a series of podcasts we will do on astronomical news and ideas, starting later in the fall. Stay tuned for more on what the producer's are calling "Fraknoi's Universe."

Eclipse Talk on YouTube and New Kind of Eclipse Stamp

   

We are exactly two months away from the eclipse of the Sun that is coming to North America on August 21, 2017. I gave an illustrated, non-technical talk on the eclipse in the Silicon Valley Astronomy Lecture series, and it is now available on YouTube at: https://www.youtube.com/watch?v=C2Folgs58oI The talk has lots of information and visuals on where and how the eclipse will be visible, how to watch it safely, and how the U.S. is preparing for the huge crowds that are expected in the narrow zone where the eclipse will be total.

   Yesterday, the U.S. Postal Service issued its first ever "thermochromic" stamp in honor of the eclipse. That means when you touch the picture, it changes. Clearly this is a stamp every science nerd...er...fan will want to have. You can get them at your post office or by mail through: https://store.usps.com/store/

   If you have not planned for the eclipse yet, now is the time to start thinking about where you will be on Monday, Aug. 21 and how you and your family or colleagues will observe the eclipse. In the video, I explain what is happening and give suggestions for safe viewing techniques. (Remember, any time any part of the Sun is showing, it's not safe to look at with just your eyes or sunglasses.)

   Thanks to grants from the Moore Foundation and Google, three astronomy colleagues and I were able to distribute 2 million safe eclipse-viewing glasses to public libraries nationwide. Check with your library to see if they are participating. The free booklet for libraries can be downloaded by anyone at: http://www.starnetlibraries.org/EclipseGuide/ 

The 'All-American' Eclipse of th

Why Should I Believe a Word of This?

        In June of 2016, the students at my college asked me to be the Commencement Speaker. I was honored and touched, and talked about skeptical thinking and living a fact-based life. The newsletter "Skeptical Briefs" has just published a one-page version of my talk and I've put it up on the web, in case anyone might like to read it:
 https://www.researchgate.net/publication/313023820_Why_Should_I_Believe_a_Word_of_This 

Science Fiction and Astronomy

As regular readers of my blog may know, I have a special interest in science fiction, and often recommend stories in my astronomy and physics classes. I even keep a webpage of science fiction stories that use accurate astronomy, at:http://www.astrosociety.org/scifi

Recently, I joined a writing group, and started writing science fiction myself. After receiving many eloquent rejection notes from some of the finest science fiction magazines, one of my stories was published in a small-press anthology about colonizing Mars, called "Building Red," edited by Janet Cannon.

This coming weekend, I will be a guest speaker at BayCon 2016, a science fiction convention in the San Francisco Bay Area (in San Mateo, to be precise.) I have spoken at such conventions before, but this will be my first time speaking not only as an astronomer, but as a science fiction author. The full program and information is on the website:http://baycon.org.  Please say hello if you stop by.

For those of you not in the area, I discussed my story (and scientists who write science fiction) on the syndicated radio show “Big Picture Science” with host Seth Shostak this week. Here is the page:http://bigpicturescience.org/episodes/science-fiction . Note the things in red are links on this page. If you click on the red “Science Fiction” under download, you will be taken to the audio for the show. The interview that mentions my story starts at about 19 minutes into the show and ends at about 30 minutes into the show.

Seth will also be a speaker at BayCon, as will several NASA scientists. I will even be on a panel on scientific science fiction with two of my favorite science fiction authors, Paul Preuss and G. D. Nordley.

For a person whose life has been mostly about teaching the facts of science, it's a lot of fun to be able to speculate in the realm of fiction. So many of my students tell me they were drawn to astronomy by a science fiction story, TV show, or movie they saw; so I know fiction can help draw new audiences toward astronomy. And with the political news the way it is these days, we all need to find ways to take our minds off our home planet and think about the "bigger picture" of the universe.

My First Science Fiction Story Published

As some of you know, I have long enjoyed science fiction, both as fascinating reading and also as a nice addition to my introductory astronomy classes. For 30 years, I also kept a diary of science fiction ideas that occurred to me, and might make the basis of good stories.

In the last year or two, I have joined a writing group and am trying to create some SF short stories of my own. I have a full bulletin board of eloquent rejection slips from some of the finest science fiction magazines in print (as, I gather, all beginning writers must collect,) But now, one of my stories has been published, in a Mars-theme anthology called "Building Red," from a small independent press in St. Louis called Walrus Publishing (and the book is available on Amazon: http://www.amazon.com/Mission-Mars-Building-Ja…/…/1940442079 )

The story, based on a real discovery about Mars, takes place in part inside a cave on the flanks of one of the four giant volcanoes on Mars' equatorial bulge. Instead of the sanitized, squeaky-clean NASA version of a future Mars colony, I tried to imagine one that's crowded, smelly, and has its share of loners and misfits.

The story is entitled "The Cave in Arsia Mons" and it appears together with Mars stories by a number of writers, some of whom have a longer publishing record in SF than I do.

More generally, for a topical index to science fiction stories that have good astronomy in them, see my web page at: 

http://www.astrosociety.org/scifi 

First Close-up Peek at Pluto's Surface

Here is the first detailed image of the surface of Pluto, released today, and it's already providing surprises. The yellow bar gives you a sense of scale; Pluto's diameter is 1473 miles (just measured by New Horizons), so we are seeing only a small part of it here.

The angular structures in the top half of the picture are mountains, the tallest being about 2 miles high. Most likely these mountains are made of frozen water -- it's so cold on Pluto that water becomes harder than rock. In fact, it is likely to be layers of "hard frozen water" that make up much of the surface of this distant world.

The biggest surprise is that the surface shows no craters, large or small. Craters are made on every world when chunks of rock or ice hit and carve out a circular depression. Since every world is regularly being hit by pieces of cosmic debris that fly through our solar system, any world without craters must have a way of erasing them pretty quickly after they form. Scientists are estimating that the absence of craters means that the surface of Pluto is being refreshed by some process, and can't be more than a hundred millions years old -- which is very YOUNG compared to the 4600 million year age of the solar system. What keeps the surface of this little world refreshed and erased is the first challenge Pluto has thrown in the face of the scientists eager to study it.

Where Would Bill Gates' Great Granddaughter Go for Her Honeymoon?

Imagine a future when space travel is common-place and you can visit the planets.  What will be the top tourist sights in our solar system?  (This is an activity I like to have my students think about as they get near the end of my introduction to the planets class.)

If you are an astronomy fan, play the game yourself. What would you pick for those once-in-a-lifetime sights that future travelers may want to visit and photograph on a honeymoon trip or graduation journey?  

For those of you who happen to be in Northern California on Saturday evening, June 20th, I will be revealing my favorites in a free public talk on Mt. Tamalpais just north of San Francisco.  (My first-ever outdoor lecture with slides!)

For those elsewhere, I'll give you a sample.  Some of my favorite stops include the 4,000-mile lava channel on Venus (always a good planet for a hot time), the towering Mount Olympus volcano on Mars (three times the height of Mount Everest), the awesome Verona Cliffs on the moon Miranda (which are the tallest “lover’s leap” in the solar system), and the recently discovered steam geysers on Saturn’s intriguing moon Enceladus (nicknamed “Cold Faithful.”)

After the lecture, there will be a laser-guided tour of the night sky by Paul Salazar and stargazing through the telescopes of the San Francisco Amateur Astronomers. This is an OUTDOOR venue, so we ask that people dress appropriately (it can get cold), and bring a flashlight to help find your way to and from the parking lots.

For more details, see: http://wonderfest.org/tourist-in-solar-system/ 

Admission is free, but seating is on a first-come, first-served basis. 

For maps and directions, see: http://friendsofmttam.org/astronomy/directions-and-contact-information.html

If it looks like rain, please call the Mt. Tam hotline at 415-455-5370, after 4 pm.  Since this is an outdoor event, it gets canceled if it is raining.

Our photo shows Saturn casting a shadow on its own sunlit rings in a view from the Cassini spacecraft.

Astronomy Versus Astrology

If I had a dollar for every time someone in casual conversation had called me an astrologer or astrologist (instead of an astronomer), my retirement funding would be a lot more secure. Often, it's an honest mistake, where the speaker really does understand that astronomy is a science and simply isn't sure of the science's proper name. What's much worse is when I run into a "true believer" in astrology, who thinks that our personality, our character, and our destiny is shaped by the arrangement of stars and the position of celestial objects at the moment of our birth.

Some years ago, I wrote an article for Sky & Telescope magazine setting out an astronomer's reaction to astrology. A much revised and updated version is now on-line, thanks to the Astronomical Society of the Pacific. If you have wondered about astrology and what to say to those who believe in it, this short article may assist you. At the very least, you might find it amusing. In it, I also describe a new field for predicting things called "jetology" (where your future is determined by the position of all the jumbo jets at the moment of your birth.) The article is in PDF file format at:http://www.astrosociety.org/astrology.pdf