A First: Planet Found With Gravitational Microlensing

The first discovery of a planet around another star using gravitational microlensing was announced yesterday by two research teams: Microlensing Observations in Astrophysics (MOA) and Optical Gravitational Lensing Experiment (OGLE).


(From Planetary Microlensing OGLE
At left, unmagnified; at right, magnified by a factor of about 7)

The newly discovered planet is 17,000 light years away, in the Sagittarius. The planet, which orbits a red dwarf, is probably one-and-a half times bigger than Jupiter. Dr. Bohdan Paczynski of Princeton University first proposed using gravitational microlensing to detect dark matter in 1986. In 1991, Paczynski and his student, Shude Mao, proposed using microlensing to detect extrasolar planets. Earlier claims have been made, but they had too few observations of apparent planetary brightness variations.

SF readers may recall the artificial gravity lens used in Larry Niven's 1973 novel Protector; this one you could focus however you wanted. For more information, see the technical paper at Planetary Microlensing OGLE. See also the original article Cosmic magnifying glass. Read more at the Optical Gravitational Lensing Experiment homepage.

Scroll down for more stories in the same category. (Story submitted 4/16/2004)

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 ")

Moving Whole Planets, Revisited
There was a lot of work done on this idea over the years.

Autonomous 'Fiberbots' Weave Large Structures
'It extrudes material like a spider.' - Charles Sheffield, 1979.

How Do You Put An Asteroid Into Earth Orbit? Carefully!
'...she would have to be coaxed by another series of pats into a circular orbit.' - Robert Heinlein, 1939.

PD Aerospace Space Plane By 2023
'The sleek, tapered space shuttle lay immobile upon the private landing field...' - Frederic Arnold Kummer, Jr., 1940.

 

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

SWEEPER Robot Peter Piper Picking Peppers
'... little machines, that went from plant to plant, apparently on caterpillar tracks, cutting off the ripe fruit.'

Oil from Algae - Can It Be Done?
'We dump everything that's waste into the tanks, pump the oil off the top.'

Moving Whole Planets, Revisited
There was a lot of work done on this idea over the years.

Disney Keeps Backups Of Star Wars Franchise Actors
'She is a personality-construct, a congeries of software agents...'

Farming In Space Starts With Mycorrhiza
'The inner leaves were beginning to curl faster than the outer leaves.'

Jaguar I-Pace Audible Vehicle Alert System For EVs
'Of course not a vehicle moved by means of internal explosions of a derivative of rock oil...'

Autonomous 'Fiberbots' Weave Large Structures
'It extrudes material like a spider.'

Birds Aren't Real - Wake Up, California! (With Bird Watching Guide)
'When he had first built them, they had been crude indeed, flying mechanisms with little more than a reflex-response unit.'

Self-Healing Material Pulls Carbon Out Of The Air
'... could seal the punctures.'

IRL Glasses Block Screens, Limit Vision To Real Life
'If you couldn't see the ads, how would you know what was fashionable?'

Testing The Single-Person Spacecraft
'...the lower part of the suit was simply a rigid cylinder.'

Shapeshifting Materials Transform By Light
'Its lines wavered, flowed, and then painfully reformed.'

Fully Automated Farm Iron Ox Hydroponics
'Had these machines in some incredible fashion been provided with brains?'

BrainNet Social Network Of Brains
'I used my implant to tell MILLIE what we wanted and she took care of it'

Phil Nuyttnn's City Under The Sea
'Under the lower roof there was no water, but a clear and luminous atmosphere...'

IONITY Opens First 10 Fast-Charging Stations
'Recharge the batteries... in almost every town and village...'

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.