2015 Halloween Party Photos

November 2nd, 2015

Jean and I were Silk Spectre and Dr. Manhattan from Watchmen.

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Sale to Nature Futures

October 27th, 2015

I have sold a new short story, “Beyond 550 Astronomical Units,” to Nature Futures.  I’ll post when it is up, and a link to their blog where I will provide some additional information about the inspiration for the story.

Launch Pad makes a Nature Appearance

September 6th, 2015

Recent Launch Pad participant John Gilbey wrote an article.

Launch Pad is the creation of Mike Brotherton: astronomer, sci-fi novelist and professor in the physics and astronomy department at Wyoming. Now in its ninth year, the programme is a wildly enjoyable week-long boot camp for science-fiction practitioners determined to get the astronomy and cosmology right in their stories, films, graphics and games. The list of authors associated with Launch Pad as instructors and students includes the likes of Joe Haldeman and Mary Robinette Kowal. They represent a wide range of sub-genres, from hard science fiction to fantasy, and explore subjects from black holes to werewolves.





Recommendation: InterstellarNet: Enigma by Edward M. Lerner

April 20th, 2015

A few years ago I got a review copy of the first book in the series, InterstellarNet: Origins, which I liked very much. The latest in the series is now out:


My blurb, which should be free of spoilers:
Edward M. Lerner’s InterstellarNet: Enigma is an engaging, intellectually stimulating science fiction novel spanning cosmic time that tackles a puzzle fundamental to the series.  Science and logic dominate the narrative in a way they do all too rarely in the field these days.  Chock full of aliens, spaceships, killer robots, artificial intelligences, InterstellarNet: Enigma does not shy away from action when the story calls for it, representing a satisfying balance of thought and deed.  This is quality science fiction.
The entire novel as Kindle book: http://www.amazon.com/dp/B00W8UELVY/
Or serialized, with Part 1 as a Kindle book: http://www.amazon.com/dp/B00WBZF1H4/

2015 Launch Pad Attendees

April 16th, 2015

Blogging continues to be on my back burner, according to the empirical data, but I wanted to share the list of talented people attending Launch Pad this summer. In no particular order:

C. C. Finlay
Michael Swanwick
Adrienne Celt
Steve Davidson
Rajan Khanna
Amy Thomson
Edd Vick
Martin Shoemaker
John Gilbey
Kameron Hurley
Rosemary Smith
Jason Hough
Alan Gratz
Lou Berger
Erin Cashier
Rahul Kanakia
Matt Forbeck
Ed Masessa

As usual, many more talented writers applied than we could squeeze in, and we assembled another awesome class. I need to do the statistics, but we’ve had well over 100 alumni now, with diverse demographics, and diverse audiences. There are a lot of tangible effects of the workshop out in the world now, and we’ve spawned other science-based workshops for writers, like the Schrodinger Sessions, too.

Launch Pad is Now Open for Applications

February 1st, 2015

Please visit the Launch Pad website for more information and to apply for the 2015 workshop.

Launch Pad Dates

January 27th, 2015

Launch Pad will run from June 1-7, 2015, this year. We will open for applications on February 1. Thanks to new and very welcome funding from SFWA, we plan to reinstate travel stipends as we have had in the past, so Launch Pad will be more affordable than ever.

Please spread the word!


Sorry for the blog slowing to an astronomical time scale, but I needed some time away to focus on my personal life and my research. I plan to resume more regular posting in the near future, here, and at Amazing Stories.

The Fatal Science Flaw of the Premise of Interstellar

December 21st, 2014

This is a repeat of an article I originally posted at Amazing Stories.

There have already been a lot of scientists and science popularizers and others looking at the science of Christopher Nolan’s ambitious film Interstellar. Kip Thorne, the eminent Caltech scientist powering much of the science, has written a book and there’s even a TV documentary.

Interstellar is a gorgeous film with fantastic visuals that takes us to places I’ve never seen before on screen, namely the environment around a supermassive black hole some 100 million solar masses, dubbed Gargantua. I enjoyed the film while watching it, but felt unsettled about some things. I hoped these things would make more sense in hindsight, but they don’t unfortunately.

Let me be clear. I recommend seeing Interstellar, and enjoying the many things it got right and the spectacle it created. The rest of this post will be my take over the science elements relying on my expertise as an astrophysicist who studies supermassive black holes and as a science fiction novelist who tries to put exotic but accurate astrophysical environments in front of readers. This is the kind of blunt and honest report I’d write to a screenwriter asking me to provide feedback on the scientific aspects of their story.

There are a few things early in the story I’d be critical about (e.g., our characters apparently drinking beer seven years after the blight has wiped out wheat), but let me focus on the astrophysics, aspects of which I have not seen considered elsewhere. More specifically, let me focus on the astrophysics that makes the entire plot of Interstellar kind of ridiculous.

First, we have an accretion disk around our supermassive black hole. The disk is apparently “anemic” even though it has temperatures like that of the surface of our sun. Even an “anemic” organized disk like this around a black hole of a 100 million solar masses, as Gargantua apparently has, puts out too much heat and hard radiation for any planets to survive anywhere close to it. Drop its output, and you lose the organized, thin disk that is clearly present. Furthermore, there is no orbit that can stay far from this disk. There won’t be any planets. And if there were planets, somehow surviving and somehow in a place where they are the right temperature to colonize, they would not stay that way for long. The output from these disks varies on human timescales. We freak out, and rightly so, about a tiny temperature change here on Earth that is nothing compared to what a planet around Gargnatua would experience. There is no way I can make these planets make sense.

A blighted Earth is a million times more habitable than any planet could be in Interstellar. Venus, Mars, or the moon even.

I’m sure the idea for the movie came about to highlight effects like time dilation close to the event horizon of a black hole. That part in the movie doesn’t even make sense. A “planet” with a time dilation as depicted in the movie would have to be within 100 meters of the event horizon, which is a pretty tiny distance to fit an Earth-sized planet. And there wouldn’t be a radio signal from any previous mission that could be detected, because there would be a similarly extreme gravitational redshift putting into a very long wavelength part of the electromagnetic spectrum, with a correspondingly weaker signal strength.

Our rocket-powered lander could also not manage the delta vees required to get to this location and get back out. A shame, after a multi-stage rocket was shown to get off the Earth. We lose all semblance of reality for the technology on display.

There are other nits to pick, but there’s no need to pick them after making this main point: colonizing the unrealistic planets shown in Interstellar is akin to colonizing a wooden raft in the caldera of an active volcano. It’s not justifiable as a “Plan A” or a “Plan B” or even Ed Wood’s “Plan 9″ (which is more feasible).

If I were revising this very flawed script and wanted to highlight the features of a black hole like the time dilation, here’s how I would do it. Make the blight something more like radioactive contamination with a half-life of a few thousand years, and get rid of hibernation technology. Let the black hole become a time machine to go into the future to a time when the Earth is safe again. That’s my best idea for salvaging something that just doesn’t work.

It’s unfortunate that we get so many of these movies these days, where some effort has been put into the science, but not applied evenly to the entire story. I’m thrilled to have the gravitational effects of the black hole portrayed so accurately, and to get real physical effects like time dilation having real effects on the story, but the story itself is flawed. I am reminded of the Star Trek reboot, where so much effort was made to get Saturn and Titan right, but no one seemed to realize that having a faster-than-light warp drive means that the event horizon of a black hole is not actually a problem to escape.

OK, I’ll stop being Professor Buzzkill now. If you liked the movie, please keep liking it. It was cool and got a lot of things right, and will, I hope, pave the way for more big-budget movies set in interesting astrophysical environments.

A possible Launch Pad style workshop for Quantum Physics?

November 13th, 2014

Chad Orzel is proposing to create such a workshop, called the Schroedinger Sessions, targeted for science fiction writers. He is trying to determine the interest level in order to support a grant proposal to fund his workshop. Please help him out and take the poll:


SF Signal Podcast

November 3rd, 2014

I’m one of the guests for the latest, which you can find and listen to here.  There were some smart, interesting, and funny things said.  I was especially pleased to be on with Ed Bryant, whose Cinnabar blew my mind as a kid.


Sunday Starlinks

October 12th, 2014

I’ve had some distractions in my personal life affecting my blogging rate.  Trying to catch up a little tonight…

First, in case I don’t blog again before the 23rd, let me make you aware of a partial solar eclipse happening over North America.  We’ll be watching from Laramie.

Pretty deep article about the missing baryons.  This is not the dark matter you’ve heard of, but the baryons that didn’t end up galaxies.

What does 200 Billion Stars really mean?  Great photo of the Galactic center here.

A nice explanation of the so-called “M-sigma relation” that is one topic I work on.

A jargon free history of the universe.

Why scientists aren’t trusted by Americans.  And how a lot of people, including intellectuals, don’t really understand science.  I’m not actually sure I agree with the premise of the second article, at least in detail, however.

Flexible tentacle robots being designed.  Shades of the X-bots in my second novel Spider Star.

Kind of a sensationalist article about potential problems with the Mars One plan, but an interesting point about ecosystems onboard a space mission.  Elon Musk wants to put a million people on Mars.  Also see Marianne Dyson’s book about real life science fiction doings, like riding the vomit comet.

Five theoretical ways to capture a star.

The science of wormholes in Interstellar.

Ten science jokes for nerds.

And this is wild — 19 Playgrounds To Haunt Your Nightmares.  OK, some are just inappropriate or funny, but a few, man!  And creepy things kids say about their imaginary friends.

I don’t know why I wasn’t aware of this before, but there’s a Jim Baen memorial short story contest that looks very hard sf/space positive.  I’m going to check out some past winners and think about entering myself.

What literary writers can learn from genre writers.

Lord of the Ringworld (AKA Larry Niven).

Check out the Unbeatable Squirrel Girl.  Wish the art was different, but a fun character for sure.

Some really nice takes on Batman costumes here!

15 people with real-life superpowers.

More on genetics vs. practice.

If bigfoot is real, should one be shot?  Science has one answer here…and it’s bloody.  One reason I’m in astronomy and not biology.  If you try, be more careful than these people.

Dungeons and Dragons, then and now.  The art was pretty silly in the old days, but I loved it…

Lt. Uhura and NASA’s latest spacecraft:

Sunday Starlinks

September 21st, 2014

Trying to get some papers and proposals revised or written, so the perfect time to blog.

A mention in a Sky & Telescope article.

A tiny galaxy has a black hole that’s too big. This ruins a nice relationship. Maybe it’s important. Or maybe the relationship just breaks down in small galaxies.

Nine sci-fi flicks with no basis in science. I disagree with a few (e.g., Gravity wasn’t science fiction and was surely based in science even if some liberties were taken). Sorry, slideshow.

And somehow, this one is science with a basis in science fiction. Making mice smarter by splicing human genes into them.

Original Star Trek reviewers didn’t get it.

A bit of badness regarding language diversity in the Star Trek reboot. I always had issues with the universal translator gimmick, as it seemed to be applied inconsistently.

How close are we to Star Trek propulsion? Short answer, not that close.

Biggest comparison of science fiction spaceships is complete. I’m thinking my next novel or story needs a really large spaceship!

Science fiction needs new dreams. I agree, a little. I think there is new stuff out there, but it’s not being loved like Star Trek, Star Wars, or even Twilight. Another take from the New York Times.

Ten things in Idiocracy that already came true. Ow, my brains!

Why smart people are not always rational. Oh, I know! Unfortunately true, and why we need science.

Comedy to promote science? Or tackle anti-science at any rate.

Skintight spacesuits coming?

Why we hate Umbridge (from Harry Potter) so much. And we do. Or I do at least.

The government of Iceland says a sea monster exists. Cool! Could be! Although I think it will be much less cool as a named animal in a zoology textbook, because oar fish and sun fish are pretty cool, but not sea monster cool.

Climate change will be expensive. I tend to accept some conservative arguments based on economics (when they’re actually based on economics and not ideology). Maybe the economic argument — which some people make to avoid doing anything about climate change — will be the one they respond to. Or utility companies can just teach teachers to be “skeptical”. Maybe they could give equal time to this White House science adviser.

Science applied to our criminal justice system shows the system is lacking.

NASA’s new private space contracts. Also, NASA’s voyager probe proves that “homos” are perverts. You can’t make this stuff up.

An introduction to Lagrangian points.

How Stephen King teaches writing.

I want this Ouija Board living room set. Hope someone will make it.

542 Batmen take the field together. Fun!

Why writers are the worst procrastinators. These arguments apply to scientists, too. I know the pattern for both fields all too well.

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