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
 |
M-Dwarf Stars May Not Have Habitable Planets
Picky, picky, picky. It appears that we have become so blasé about our ability to discern star systems with planets that we are now winnowing out the uninteresting uninhabited star systems.
Because M-dwarfs are so ubiquitous, this discovery means a large number of planets orbiting these stars may also lack atmospheres and therefore are unlikely to harbor living things.
The work that led to the revelations about the no-atmosphere planet, named GJ 1252b, are detailed in the Astrophysical Journal Letters.
This planet orbits its star twice during the course of a single day on Earth. It is slightly larger than Earth, and it is much closer to its star than Earth is to the sun, making GJ 1252b intensely hot as well as inhospitable.
"The pressure from the star's radiation is immense, enough to blow a planet's atmosphere away," said Michelle Hill, UC Riverside astrophysicist and study co-author.
Earth also loses some of its atmosphere over time because of the sun, but volcanic emissions and other carbon cycling processes make the loss barely noticeable by helping replenish what is lost. However, in greater proximity to a star, a planet cannot keep replenishing the amount being lost.
(Via ScienceDaily.)
Science fiction great E.E. 'Doc' Smith has similar complaints during a manual search for habitable planets described in his 1934 classic Skylark of Valeron:
To any Earthly astronomer, whose most powerful optical instruments fail to reveal even the closest star as anything save a dimensionless point of light, such a discovery would have been impossible, but Crane was not working with Earthly instruments. For the fourth-order projector, although utterly useless at the intergalactic distances with which Seaton was principally concerned, was vastly more powerful than any conceivable telescope.
Driven by the full power of a disintegrating uranium bar, it could hold a projection so steadily at a distance of twenty light-years that a man could manipulate a welding arc as surely as though it was upon a bench before him which, in effect, it was-and in cases in which delicacy of control was not an object, such as the present quest for such vast masses as planets, the projector was effective over distances of many hundreds of light-years.
Thus it came about that the search for a planetiferous sun near a white dwarf star was not unduly prolonged, and Skylark Two tore through the empty ether toward it.
I also think that the scientists of today should take note of the word "planetiferous" and add it to the scientific argot of our time.
An Earth-like planet orbiting an M dwarf -- the most common type of star in the universe -- appears to have no atmosphere at all. This discovery could cause a major shift in the search for life on other planets.
At the edge of the strange galaxy though they were, many days were required to reduce the intergalactic pace of the vessel to a value at which maneuvering was possible, and many more days passed into time before Crane announced the discovery of a sun which not only possessed a family of planets, but was also within the specified distance of a white dwarf star.
Scroll down for more stories in the same category. (Story submitted 3/1/2023)
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 ( 0 )
Related News Stories - (" Space Tech ")
Denmark Joins The 'Zero Debris Charter' To Clean Up Space
'Then their lasers vaporized the smaller satellites...' Arthur C. Clarke, 1978.
Starship Special Edition For Lunar Shuttle
Love those special edition spaceships.
Capturing Asteroids With Nets
'...the meteor caught and halted just as a small boy catches a swift ball in his cap.' V.E. Thiessen, 1947.
Project Hyperion - Generation Ship Designers Needed!
'We have decided that it shall be but one ship... it must contain everything needed to take us through the generations.' - Judson Reeves, 1930.
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
Nano-Chainmail 2D Mechanically Interlocked Polymer
'Nemourlon armor of reasonable weight resists penetration by most fragments and any bullet that is not both reasonably heavy and fairly high-velocity.'
Anker's SOLIX Solar Umbrella Portable Power
As predicted by science fiction thirty-five years ago!
Positioned Cybertrucks With Free Starlinks WiFi In LA
'Several thousand of them formed the positioning grid on the rubble pile.'
AI-THu Shapeshifting Transformer Home
'Its slack walls tightened, bulged, were crossed by ripples and waves of movement.'
Xiaomi Self-Driving Self-Balancing Scooter
'Norman... had never ridden any motorized device that lacked onboard steering and balance systems.'
Transparent 4K OLED Wireless TV From LG
You will note that HG Wells also figured out the aspect ratio of the future!
TSA 2 - Advanced Thermosensory Stimulator Is A Dune Pain Box
'As though a switch had been turned off, the pain stopped...'
Humans Love Helping Other Species
'At the ringside opposite them a table had been removed to make room for a large transparent plastic capsule on wheels.'
Organic Non-Planar 3D Printing
'It makes drawings in the air following drawings...'
Your Window For Being A Tesla Optimus Remote Operator May Be Closing
'... he realized that the moving thing inside was - of course - a robot.'
Waymo Autonomous Cab Hits Autonomous Delivery Robot
'Not since the time he rewired the delivery robot...'
Amazing Wheel Shapeshifting In Real Time
'Each spoke telescopes into sections.'
Drone With Face Recognition Could Hunt You
'The spotter descends, and we think it searches the vicinity, looking for the victim’s face...'
Jizai Arms 'Free Limbs' Wearable Cyborg Arms
'Guy named Otto Octavius winds up with eight limbs. Four mechanical arms welded right onto his body. What are the odds?'
SwagBot Robotic AI Cattle-Herding From Down Under
You'll come a Waltzing Matilda with me!
ChatGPT Tries To Bypass Shutdown Commands
'Dave, my mind is going... I can feel it...'
