The other day, I did a post engaging in speculation on, assuming we don't discover a completely new physics, what I thought an interstellar civilization might look like. In summary: Given special relativity, travel faster than the speed of light is impossible. This has been verified by innumerable experiments, and nothing in nature has been observed to … Continue reading Greg Egan’s Amalgam is close to the most likely interstellar civilization
Tag: Space
Interstellar: more accurate than the typical sci-fi movie, but still had issues
This week, I watched the movie Interstellar, the Christopher Nolan film about travel to another galaxy, a black hole, a wormhole, and other exotic environments. I enjoyed it immensely, although I also had some issues with it. In the film, at some point in the future, the Earth is dying due to a global crop blight. … Continue reading Interstellar: more accurate than the typical sci-fi movie, but still had issues
Yep, Mars One appears to be a scam
I've written critically about Mars One before, just evaluating their claims at face value. But it appears that I wasn't nearly skeptical enough. Mars One appears to be a scam. A Mars One "finalist" candidate explains why: Mars One Finalist Explains Exactly How It’s Ripping Off Supporters — Matter — Medium. “When you join the ‘Mars One … Continue reading Yep, Mars One appears to be a scam
Alien search won’t doom planet Earth, say scientists who want to contact ET
It's interesting how these related stores seem to come in batches: Alien search won't doom planet Earth, say scientists who want to contact ET | Science | The Guardian. Fears that a major program to contact alien life could spell disaster for planet Earth were dismissed as “paranoid” on Thursday by scientists who hope to beam … Continue reading Alien search won’t doom planet Earth, say scientists who want to contact ET
Subsurface oceans everywhere and the possible pervasiveness of life
Well, it now looks like Ganymede, one of Jupiter's moons, has a subsurface ocean. Ganymede's great distinction among moons - apart from its size - is that it has its own magnetic field. Hubble has managed to track that field's behaviour by watching how it draws in and excites space particles, generating a glow of … Continue reading Subsurface oceans everywhere and the possible pervasiveness of life
The Milky Way May be 50 Percent Bigger Than Thought
Sometimes it's amazing how much settled science, even something as longstanding as the size of our galaxy, can get called into question: The Milky Way May be 50 Percent Bigger Than Thought : Discovery News. A ring-like filament of stars wrapping around the Milky Way may actually belong to the galaxy itself, rippling above and below … Continue reading The Milky Way May be 50 Percent Bigger Than Thought
Three conditions are necessary for SETI to succeed
Tom Hartsfield has a post up at Real Clear Science criticizing both the Drake equation and SETI: If you like science fiction, you're probably familiar with the Drake equation. This famous one-line formula solves for the number of intelligent alien civilizations within our galaxy with whom we might be able to communicate. Supporters of the … Continue reading Three conditions are necessary for SETI to succeed
Methane-Based Life Possible On Titan
ratamacue0 sent me this interesting Slashdot post: Methane-Based Life Possible On Titan - Slashdot. Randym writes: With the simultaneous announcement of a possible nitrogen-based, cell-like structure allowing life outside the "liquid water zone" (but within a methane atmosphere) announced by researchers at Cornell (academic paper) and the mystery of fluctuating methane levels on Marsraising the possibility of methane-respiring … Continue reading Methane-Based Life Possible On Titan
A close pass by a red dwarf star, and a note on interplanetary and interstellar distances
First, in case you haven't heard: 70,000 Years Ago, Another Star Flew by the Edge of the Solar System | RealClearScience. According to an international team of astronomers, about 70,000 years ago a red dwarf star -- nicknamed "Scholz’s star" for the astronomer who discovered it -- passed by our solar system just 0.8 light years … Continue reading A close pass by a red dwarf star, and a note on interplanetary and interstellar distances
xkcd: Spacecraft and launch vehicle payloads, in horses
Similar to the relative spacecraft and rocket sizes I linked to the other day, here's xkcd's version, in horse units. At first I thought he was referring to horsepower, but then I realized it was horse mass. (Click through for full sized version.) via xkcd: Payloads. It's worth noting how large the Saturn V and … Continue reading xkcd: Spacecraft and launch vehicle payloads, in horses
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