A Sparkling Cluster of Stars from the Hubble

Here is a beautiful new image from the Hubble Space Telescope, showing a young cluster of stars called Trumpler 14.

Located about 8,000 light years away in the constellation of Carina, this grouping of hot bright stars formed only recently from a great cloud of cosmic raw material, called the Carina Nebula. It is one of the great ideas that we now know about how stars live that the more massive a star, the brighter it shines, and the shorter its life-span will be before it "burns out." Superstars die first, is the general rule.

Because Trumpler 14 formed only about 500,000 years ago (which is a very short time on the cosmic scale), this group still includes a lot of bright superstars, which dominate our image.

Robert Trumpler (1886-1956) was a Berkeley astronomer, who compiled a very useful list of star clusters (places where dozens to thousands of stars are born together.) An annual award at the Astronomical Society of the Pacific, honoring the best PhD thesis in astronomy in North America, is named in his honor.

In our picture, you can see a jewel-like display of bright stars in front of the glowing gas and dust of the nebula. The stars in this cluster are one ten thousandth the age of our Sun. Mere babies, really!

Click on the photo to enlarge it and see it even better.  

"The Martian" and Other News of the Solar System

If you've seen, read, or heard about "The Martian" film or novel, you may know that it's a story by an engineer about survival on Mars. If you'd like some background on how author Andy Weir tried to make the story realistic, using known science, check out his talk at NASA's Ames Research Center at: https://www.youtube.com/watch?v=KBtXuBuZPpQ

The image accompanying this post is a selfie of a real "martian" -- the Curiosity Rover on Mars, which took the pictures from which this great Mars image was assembled in August. If you click on the picture, you get a bigger version.

For a listing of other Mars science fiction stories with reasonable astronomy, you can download my one-page resource guide at: https://www.researchgate.net/publication/282505754_Mars_Science_Fiction_with_Reasonable_Science

A fantastic new image and movie of Pluto's giant moon Charon (with its mysterious red polar cap) can now be seen at: http://pluto.jhuapl.edu/News-Center/News-Article.php?page=20151001 

For those of you who are in the Northern California area, or have friends there, there are two exciting events coming up this week:

1) Dr. Carolyn Porco, the head of the imaging team for the Cassini mission at Saturn, is giving a free public lecture (with fabulous pictures) at Foothill College Wednesday night: http://www.foothill.edu/news/newsfmt.php?sr=2&rec_id=3852

2) The Astronomical Society of the Pacific and Chabot Space Science Center are sponsoring an all-day Family Astronomy Festival in Oakland Saturday Oct. 10. See: https://www.astrosociety.org/education/asp-annual-meeting/

A Special Event near San Francisco This Sunday

I would like to invite all of you who live in or near the San Francisco area to a very special event this Sunday, at the Hyatt Regency Hotel near the San Francisco Airport, in the town of Burlingame. I will be moderating an afternoon discussion with three of my favorite astronomers (all excellent public speakers.)

Our topic will be "Beyond Earth: Planets, Life, and Intelligence in the Cosmos" and we will discuss the search for planets around other stars, for life on the worlds in our own solar system, and for intelligent life elsewhere in the universe. Geoff Marcy is considered the foremost planet hunter on our planet, having discovered more planets orbiting other stars than any other human being. Jill Tarter has headed the search for intelligent radio signals from ET for many years, and is the scientist whom Jody Foster was playing in the film "Contact." Chris McKay is one of the top Mars experts in the world and explores places on Earth that most resemble Mars.

The program is sponsored by the non-profit Astronomical Society of the Pacific, which is celebrating its 125th anniversary this year. The illustrated talks and panel will go from 1:30 to 5:30 pm at the Hyatt Hotel, 1333 Bayshore Highway, Burlingame, CA 94010. It's all free and open to the public, but the sponsors hope each attendee will make a donation of $10 to help pay for the expenses at the hotel. We expect big crowds, so come a little early to get a seat.

For more information and to RSVP, go tohttp://www.astrosociety.org/universe2014

With almost 2,000 planets now known to orbit other stars, and with many stars having more than one planet (just like our Sun does), this is the time that topics that seemed like science fiction only a few years ago are becoming an exciting part of science. Hear the latest from those at the forefront of this work.

If you know people living near San Francisco who might be interested, perhaps you can help me by sending this information on to them.

Reading Recommendations: Pluto's Discovery; the Astronomy of Harry Potter

From time to time, I like to use this page to recommend some outside reading on interesting aspects of astronomy that you might enjoy. I have two recommendations this time, both from a column (called "Astronomy Beat") that I had the pleasure of editing for a number of years for the Astronomical Society of the Pacific.

This week was the anniversary of the discovery of Pluto, in February 1930, by Clyde Tombaugh, a young observer fresh off the farm and doing his first project for the Lowell Observatory. Before Tombaugh passed away, I was fortunate to be able to persuade him to write up the circumstances of his discovery. (This week's picture shows me -- with a lot more hair -- in 1985 with Tombaugh.) If you want to read his story, you can see it at:http://www.astrosociety.org/pluto/ab2009-23.pdf 

Another fun column covered the astronomy of Harry Potter and how teachers have used the popularity of those books and movies to encourage more interest in astronomy. Sirius Black (named after the brightest star visible in our sky) is only one of many astronomical references in the world of Hogwarts. Check out that column at:
http://astrosociety.org/wp-content/uploads/2013/02/ab2011-66.pdf

Links to all the columns in the series that have been made available to the public can be found at: http://astrosociety.org/publications/astronomy-beat/

I recommended the column by Frank Drake in an earlier post, but for readers new to the AstroProf pages, it has the story of how Frank Drake came up with the way of estimating the number of intelligent civilizations we might contact in our galaxy.  See: 
http://astrosociety.org/wp-content/uploads/2013/02/ab2010-46.pdf

(His way of estimating became known as the Drake Equation and is now part of popular culture.  You can see it discussed on the TV comedy, the Big Bang Theory for example, here: 
http://www.youtube.com/watch?v=cj_Bz_Cqu0g )