 |
Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
|
 |
Speciation Driven By Cosmic Cycles?
Scientists at UC Berkeley found that biodiversity in the fossil record seems to wax and wane according to a 62 million year cycle. Now, University of Kansas researchers theorize that the Earth's travels through the galactic plane may be the cause.
Our Sun moves closer and further from the center of our galaxy, as well as up and down through the galactic plane. The timing? A cycle of about 64 million years - very close.
Adrian Melott and his colleague Mikhail Medvedev, both KU researchers, speculate that as the Milky Way hurdles towards the Virgo Cluster, it generates a so-called bow shock in front of it that is similar to the shock wave created by a supersonic jet.
“Our solar system has a shock wave around it, and it produces a good quantity of the cosmic rays that hit the Earth. Why shouldn’t the galaxy have a shock wave, too?” Melott said.
The galactic bow shock is only present on the north side of the Milky Way’s galactic plane, because that is the side facing the Virgo Cluster as it moves through space, and it would cause superheated gas and cosmic rays to stream behind it, the researchers say. Normally, our galaxy’s magnetic field shields our solar system from this “galactic wind.” But every 64 million years, the solar system’s cyclical travels take it above the galactic plane.
“When we emerge out of the disk, we have less protection, so we become exposed to many more cosmic rays,” Melott told SPACE.com.
Science fiction fans are gloating, though, because this kind of big picture thinking is right up their alley. In Poul Anderson's classic 1954 novel Brain Wave, everyone on Earth suddenly gains a hundred IQ points. Even animals acquire human-like intelligence. The explanation?
"...we're pretty well agreed here at the Institute that Dr. Corinth's theory is the right one. This postulates a force-field of partly electromagnetic character, generated by gyromagnetic action within atomic nuclei near the center of the galaxy. It radiates outward in a cone which, by the time it has reached our section of space, is many lightyears across. Its effect has been to inhibit certain electromagnetic and electrochemical processes, among with the functioning of certain types of neurones is prominent. We suppose that the Solar System, in tis orbit around the galactic center, entered this force-field many millions of years ago - hardly later than the Cretaceous. Doubtless many species of that time died out. However, life as a whole survived - adapted nervous systems compensated for the inhibiting force by becoming that much more efficient...
The general effect of the world's coming out of the inhibitor field was, of course, a sudden zooming of intelligence in every life form possessing a brain. Suddenly the damping force to which every living organism was adjusted, was gone."
If you like big-picture astrophysics with a science-fictional twist, see
Read more at Space.com.
Scroll down for more stories in the same category. (Story submitted 4/24/2007)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 1 )
Related News Stories -
("
Space Tech
")
Japan's LignoSat Space Wood Satellite And Dan Simmons' Treeship
'The Consul remembered his first glimpse of the kilometer-long treeship...' - Dan Simmons, 1989.
Is It Time For Lunar Farside Telescopes?
'Mount Ambarzumian Observatory, on Farside.' - Poul Anderson, 1958.
Spaceflight Vertigo Solved By NASA Releasing The Kraken
"I threw up in my helmet."
Lunar Pogo Stick - Retro Technovelgy From 1968
'Lucky touched the leap knob...' - Isaac Asimov, 1954.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
|
 |
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
ESTHER Tennis Robot V. Fact (1934) And Fiction (1952)
'THE red tennis robot scooted desperately across the court...'
Japan's LignoSat Space Wood Satellite And Dan Simmons' Treeship
'The Consul remembered his first glimpse of the kilometer-long treeship...'
Skyline Robotics Instantiates Heinlein's 'Window Willie' Skyscraper Robot
'Do you know what window washing used to cost by the hour?'
Drone Bombings In Moscow Foreseen 100 Years Ago
'Once the target is confirmed, it uses an IR laser to send a coded signal back to the parent, clearing it to attack.'
I Didn't Know You Can Already Buy Flesh Putty
'I filled your bullet hole with flesh putty and the lattice.'
'A Sign in Space' Gives Practice In Decoding ET Messages
'... it will be easy to form an alphabet which shall enable us to converse with the inhabitants of the moon.'
Melting Permafrost Endangers Infrastructure
'From the tower's huge octagonal base radiate wide silvery strips...'
EELS Exobiology Extant Life Surveyor For Enceladus
'It was about five feet long... a black bullet head and red camera eyes.'
Lazy Lawyer's Trust In ChatGPT Misplaced
'The Law Society has strict rules on the use of pseudo-intelligent software...'
Paradromics Implant FDA 'Breakthrough Device'
'I used my implant to tell MILLIE what we wanted...'
Mice, At Least, Can Sober Up Quickly
'Then draw some aldodote-vitamin pills from the medic.'
Is It Time For Lunar Farside Telescopes?
'Mount Ambarzumian Observatory, on Farside.'
Spaceflight Vertigo Solved By NASA Releasing The Kraken
"I threw up in my helmet."
TM-62 Loitering Ground Landmine
Runaway movie comes to life!
Helpful Robots In Science Fiction
'If you douse me again... I'm donating you to a city college.'
Lunar Pogo Stick - Retro Technovelgy From 1968
'Lucky touched the leap knob...'
More SF in the News Stories
More Beyond Technovelgy science news stories
|
 |