Slashdot Mirror

Astronomer, author, columnist, and successful populizer of science Phil Plait, perhaps best known as The Bad Astronomer, is a regular sight on Slashdot for his unusual ability to find lucid explanations of esoteric scientific claims and controversies. Phil has graciously agreed to answer Slashdot readers' questions, so ask him below about space, science, debunking conspiracy claims, and anything else that makes sense. Asking more than one question is fine (and encouraged!), but please separate unrelated questions into separate posts, lest your questions be moderated down.

FiReaNGeL writes "Astronomers have seen the aftermath of spectacular stellar explosions known as supernovae before, but no one had witnessed a star dying in real time — until now. While looking at another object in the spiral galaxy NGC 2770, using NASA's orbiting Swift telescope, scientists detected an extremely luminous blast of X-rays released by a supernova explosion. They alerted 8 other telescopes to turn their eyes on this first-of-its-kind event. 'We were looking at another, older supernova in the galaxy, when the one now known as SN 2008D went off. We would have missed it if it weren't for Swift's real-time capabilities, wide field of view, and numerous instruments.'" Bad Astronomy has an excellent, well-illustrated story about the discovery as well. I Don't Believe in Imaginary Property contributes a link to the BBC's coverage, and adds a nugget gleaned from Ars Technica: "SN 2007uy's collapse caused an X-ray burst of about 10^39 joules, most likely due to the 'shock break out' when the energy of the core's collapse finally reached the neutron star's surface."

Simon Howes writes "After searching for decades, astronomers have found a supernova in our galaxy! So it wasn't little green men we were waiting for. It's located very near the center of the galaxy, about 28,000 light years away, and it's only at most about 140 years old. Quote from Bad Astronomy: 'If you're wondering what all the buzz has been about the past few days over a NASA discovery, then wait no longer. No, it's not aliens or an incoming asteroid. Instead, it's still very cool: astronomers have found the youngest supernova in the Milky Way.'" FiReaNGeL contributes a link to coverage on e! Science News; I think Wired's account of the super-hyped tele-press-conference is the funniest.

CaptainCarrot writes "Phil Plait, aka The Bad Astronomer has summarized for his readers the new results released by NASA from the Wilkinson Microwave Anisotropy Probe (WMAP), which has been surveying the 3K microwave radiation left over from the Big Bang. Some of the most interesting results: The age of the universe is now known to unprecedented accuracy: 13.73 billion years old, +/- 120 million. Spacetime is flat to within a 2% error margin. And ordinary matter and energy account for only 4.62% of the universe's total. Plait's comment on the age result: 'Some people might say it doesn't look a day over 6000 years. They're wrong.'"

CaptainCarrot writes "Phil Plait, aka The Bad Astronomer has summarized for his readers the new results released by NASA from the Wilkinson Microwave Anisotropy Probe (WMAP), which has been surveying the 3K microwave radiation left over from the Big Bang. Some of the most interesting results: The age of the universe is now known to unprecedented accuracy: 13.73 billion years old, +/- 120 million. Spacetime is flat to within a 2% error margin. And ordinary matter and energy account for only 4.62% of the universe's total. Plait's comment on the age result: 'Some people might say it doesn't look a day over 6000 years. They're wrong.'"

The Bad Astronomer writes "Rumors have been flying in recent days that the SETI project has received a strong signal from space, indicating the possibility of intelligent extraterrestrial life. Bad Astronomy breaks down the origins of this (false) claim, which mostly amounts to a heaping helping of shoddy journalism. 'I just talked to Dan Wertheimer, the astronomer quoted in the article. He told me that the original interview was about sending signals into space (so-called active SETI) as opposed to just listening for aliens. After the interview, he talked to the reporter about some of the astronomy he does, including looking at what are called radio transients: bursts of radio waves that are seen once and never repeat. These may come from one-off events like colliding neutron stars, exploding stars, and so on. Somehow, in the article the reporter mixed up the observation of the transient signals with detecting a signal from E.T.'"

tigerhawkvok writes "Recently, new author Stuart Privar provided Professor PZ Meyers of Pharyngula a copy of his book, Lifecode, for review. Over the course of the review itself and a few follow-ups, it became evident that the content was nonsense (including, among other things, ten-legged spiders and other phenomena strongly at odds with developmental biology). However, the common threat of lawsuits finally became a reality, and now Privar is suing Myers for $15 million. Can calling someone a 'classic crackpot' in the face of such incorrect data have any chance at making it to court, or even winning the suit?"

The Bad Astronomer writes to tell us that a recent advance in Loop Quantum Gravity theory appears to allow the mathematics of cosmology to be extended to the time before the Universe underwent the Big Bang. Bad Astronomer also attempts to simplify things a bit with his own explanation of the new discovery.

da4 writes "Phil Plait over at Bad Astronomy has a great article about Eta Car, a star approx 7,500 light years away from us that's ready to supernova sometime Real Soon Now." Larger versions of the Hubble-Chandra image of Eta Car are available at the Chandra site. Of course when astronomers say it's "about to explode," they really mean it probably exploded 6,500 to 7,500 years ago and we're awaiting the news.

The Bad Astronomer writes "Astronomers in Europe have announced the discovery of a planet with only 5 times the Earth's mass, orbiting a red dwarf star 20 light years away. It orbits the star so closely that it only takes 13 days to go around... but the star is so cool that the temperature of the planet is between 0 and 40 Celsius. At this temperature there could be liquid water. Models indicate the planet is either rocky like the Earth or covered in an ocean. While it's not known if there actually is liquid water on the planet, this is a really big discovery, and indicates that we are getting ever closer to finding another Earth orbiting an alien star."

banditski asks: "We have pictures of Mars rovers from taken from orbit, like this photo of Opportunity, but I could not find any of the lunar landers from 60's and 70's? If they do exist, where are they?" More interesting photos from the MRO can be found in an October entry of the Bad Astronomer weblog, and interestingly enough this sentiment was repeated by a couple of posters, there. It won't be until 2008 until we get a fresh pair of 'eyes' on the Moon, but that doesn't mean that there aren't earlier, and just as interesting images buried somewhere on the net. Where can you find interesting orbital photos of the Moon, particularly ones that contain the LEMs, or other photogenic aspects of Tranquility Base?

The Bad Astronomer writes "Astronomical observatories on the ground and in space return many terabytes of data every year. But which bytes are the best? I combed through thousands of pictures to find the Top 10 astronomy images of the year."

The Bad Astronomer writes "Astronomical observatories on the ground and in space return many terabytes of data every year. But which bytes are the best? I combed through thousands of pictures to find the Top 10 astronomy images of the year."

rdwald writes, "After over a year of hanging in maybe-planet limbo, newly-classified 2003 UB313, nicknamed Xena, now has a permanent name: Eris, goddess of strife. Its moon will be named Dysnomia, after the goddess of lawlessness — in Greek mythology, Eris's daughter — certainly not a reference there... I don't think I'm alone when I say, 'Hail Eris! All hail Discordia!'" In the same IAU announcement (PDF), Pluto was given its official minor planet number: 134340.

The Bad Astronomer writes "The New York Times is reporting that NASA science is being harassed and even sometimes suppressed by presidential political appointees. The article details how NASA scientists dealing with such topics as global warming and the Big Bang are under attack for ideological and religious reasons." The submitter also has a running commentary summarizing a bit of the background of the story on his blog.

The Bad Astronomer writes "The New York Times is reporting that NASA science is being harassed and even sometimes suppressed by presidential political appointees. The article details how NASA scientists dealing with such topics as global warming and the Big Bang are under attack for ideological and religious reasons." The submitter also has a running commentary summarizing a bit of the background of the story on his blog.

An anonymous reader writes "Space.com is reporting that the European Space Agency's SMART-1 probe is imaging the Apollo landing sites on the moon. The resolution may be good enough to see mineral evidence of the blasts created by landing craft. Photos expected too. The article says it "might put to rest conspiratorial thoughts that U.S. astronauts didn't go the distance and scuff up the lunar landscape." I wouldn't bet my Buzz Aldrin doll that hoax buffs will cease and desist."

StarEmperor writes "Bad Astronomy's Phil Plait has finally taken some time to debunk conspiracy theorist Richard Hoagland's claims about life on Mars. There's also a CNN story about this here."

Berek Half Hand writes "Phil Plait over at Bad Astronomy has a great personal story of a paranormal visitation to his shower. His report explains a lot about human nature and how our brains our wired. Those of you who may be Kate Campbell fans will also immediately think of 'Jesus and Tomatoes' and the famous Nun Bun."

Berek Half Hand writes "Phil Plait over at Bad Astronomy has a great personal story of a paranormal visitation to his shower. His report explains a lot about human nature and how our brains our wired. Those of you who may be Kate Campbell fans will also immediately think of 'Jesus and Tomatoes' and the famous Nun Bun."

You ever thought about what a real science channel would look like? Something to counter fakers and disinformation? Maybe it can happen.

An anonymous reeader writes "The other day the Fox Network showed an ill-researched program about how the moon landings were hoaxed. Nasa has responded on their front page, here. Since the community here appreciates science, here is a page originally linked to on the NASA site about refuting the illogical arguments of non-believers: badastronomy.com."