Green Comet Machholz - Hopefully, Without Cometeers

In his 1936 classic The Cometeers, science fiction Grandmaster Jack Williamson writes of a sinister green comet:

"Perhaps it's a comet." Still frowning, Bob Star swung back toward the observatory. "It looked like one - it was a short streak of that queer, misty green, instead of the point a star would show..."

Inside the chilly gloom of the observatory, Bob sat down at the telescope. Its mechanisms whirred softly, in swift response to his touch. The great barrel swung to search space with its photoelectric eyes, and the pale beam of the projector flashed across to the concave screen.

...He stepped up the electronic magnification. Vindemiatrix and the fainter stars slipped out of the field. The comet hung alone, and swiftly grew. Its shape was puzzling - a strangely perfect ellipsoid. A greenish football, he thought, kicked at the System out of the night of space - by what?

...Using ray filters and spectroscope, with the full power of the circuits, he strove to pierce that dull green veil, and failed."


(From Comet Machholz (right) moves across toward the Pleiades (left))

As it happens, you have the opportunity to step out your door this coming Friday, and observe a comet described by NASA as "glowing alien green" yourself. Here's how to see Comet Machholz:

Look 2 degrees to the right of the Pleiades. (If you live in the southern hemisphere, look to the left.) The tip of your pinkie finger, held at arms length is about 1 degree wide, so 2 degrees is two pinkies. The cloud resembles a faint and fuzzy star, barely visible to the unaided eye, but easy to see through binoculars.

With a diameter of at least 450,000 kilometers, the coma of this comet is at least three times wider than the planet Jupiter. Named after its discoverer, amateur Don Machholz, astronomers have been watching it since last August. This week is its closest approach - about 52 million kilometers. The cometary body itself is small; its two tails (the ion tail points up; the dust tail points down in the picture below) are what give it size.


(From Comet Machholz ion tail points up and dust tail points down)

The comet glows green because its coma contains cyanogen and diatomic carbon, both of which glow green when illuminated by sunlight.

And the peculiar ellipsoid shape seen in the novel? Twelve million miles long, it was a ship; its green surface was an impenetrable force barrier. Its masters were beings of light and mist. You'll need to read the novel to see what it contained, but here's a hint; the paths of the bodies in our solar system are ellipsoidal.

Thanks to Winchell Chung for the story suggestion. Get the latest updates on comet Machholz at Space.com.

Scroll down for more stories in the same category. (Story submitted 1/6/2005)

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 - (" Spacecraft ")

Laser-Powered Spacecraft To Explore The Solar System
'Whoever launched it fired a laser cannon... for about forty-five years, so the intruder would have a beam to travel on...'- Niven/Pournelle, 1974.

SKYLON Space Plane Gets Boost
'They were more airplane than spaceship...'- Robert Heinlein, 1951.

Europe's Cheops To Look For Habitable Planets
'I was near enough it now to set my automatic astronomical instruments to searching it for a habitable planet.'- Edmond Hamilton, 1936.

SpaceX Dragon First Private Craft To Dock With ISS
'Why, the ship wasn't a proper deep-space craft at all.'- Robert Heinlein, 1941.

 

Google
  Web TechNovelgy.com   

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.

 

 

 

 

 

Current News

Hackers Can Take Control Of Cars From Anywhere In The World
'The car faltered as the external command came to brake...'

Armed Drone Opens Fire
'Each a television eye and a sonic stunner...'

Robotic Exoskeleton Releases Man From Wheelchair
'This man was standing on two corrugated-soled titanium footplates...'

Oh, Just Let Robots Run Airports
I'd like a friendly robot to help me at airports.

How Smart Should AI's Be Allowed To Get?
'Every AI ever built has an electromagnetic shotgun wired to its forehead'

NASA Misses $5Trillion Funding Boost
'This must be a golden planet—this little asteroid.'

Kuwait Creates Mandatory DNA Database For Citizens
And who has the largest DNA database on its citizens?

Please, Please Let There Be Regenerated Teeth
'Toothbud transplants...'

Google AI 'Deep Dreams' Kubrick's 2001
'I was only trying to do what I thought best....'

The BLITAB: First Tactile Tablet for Blind People
Absolutely amazing development - now blind people can read the web!

Why, Oh Why, Must We Develop Robots That Run Faster Than I Do?
'The legs are long, curled way up to deliver power, like a cheetah's.'

Golf Robot Putts Out
'The robot solemnly hit a ball against the wall, picked it up and teed it, hit it again, over and again...'

Computer Finds Cancer Doctors Miss
The computer will see you now.

Would Robot Taxis Ease Carbon Emissions?
'He emerged and flagged down a robot taxi...'

Brainwaves As Biometric Identification
'The doors of Mr. Lars, Incorporated, shut, tuned as they were to his own cephalic pattern.'

What-If Machine Concocts Creative Premises
'Books were just a commodity that had to be produced, like jam or bootlaces.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.