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ASSA Symposium - Durban 2008

 
       
     
     
 
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10 September 2008 @ 8:00pm

JOHANNESBURG PLANETARIUM!!


 

Regular Meetings
Monthly meetings are usually held on the second Wednesday of every month (except December) at the Old Republic Observatory in Johannesburg, and when the meeting takes place at the Johannesburg Planetarium

 

 

for directions to the planetarium click here

 

 
       
     
     
 
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Johannesburg, ZA

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Lost & Found - Wedding Ring at ATM Class - Posted - 28 August 2008
John Scott of Parktown Boys High found a wedding ring under a table in the room of the Saturday ATM grinding class. He first asked the students . . . . but no one was courageous enough to come forward and own up. The ring was uncovered on the floor,  August 20th in a workshop cleanup. Anyone's finger who's feeling naked and wants to regain their dignity I possess that golden opportunity to retain such bliss.
Regards
Julian Shellard 

Special talk on the Herschel Siblings - Andrew Burns - Posted - 31 July 2008
“The Herschel Siblings” - John's father, uncle and aunts and how events in the family history may have moulded the polymath John we know in South Africa. read more...
 

Total Solar Eclipse of 2008 August 01 - Posted - 05 July 2008

On Friday, 2008 August 01, a total eclipse of the Sun is visible from within a narrow corridor that traverses half the Earth. The path of the Moon's umbral shadow begins in Canada and extends across northern Greenland, the Arctic, central Russia, Mongolia, and China. A partial eclipse is seen within the much broader path of the Moon's penumbral shadow, which includes northeastern North America, most of Europe and Asia.

2008 Total Solar Eclipse Global Map 

Milky Way with the Spitzer Space Telescope - Posted - 16 June 2008
Milky way Picture 235918main_GL_MG_Poster-516.jpg
More than 800,000 frames from NASA's Spitzer Space Telescope were stitched together to create this infrared portrait of dust and stars radiating in the inner Milky Way.
As inhabitants of a flat galactic disk, Earth and its solar system have an edge-on view of their host galaxy, like looking at a glass dish from its edge. From our perspective, most of the galaxy is condensed into a blurry narrow band of light that stretches completely around the sky, also known as the galactic plane.
In this mosaic the galactic plane is broken up into five components: the far-left side of the plane (top image); the area just left of the galactic center (second to top); galactic center (middle); the area to the right of galactic center (second to bottom); and the far-right side of the plane (bottom). From Earth, the top two panels are visible to the northern hemisphere, and the bottom two images to the southern hemisphere. Together, these panels represent more than 50 percent of our entire Milky Way galaxy.

 

Ghostly Rings - 29 May 2008

This image shows a ghostly ring extending seven light-years across around the corpse of a massive star. The collapsed star, called a magnetar, is located at the exact center of this image. NASA's Spitzer Space Telescope imaged the mysterious ring around magnetar SGR 1900+14 in infrared light. The magnetar itself is not visible in this image, as it has not been detected at infrared wavelengths (it has been seen in X-ray light).

Magnetars are formed when a giant star ends its life in a supernova explosion, leaving behind a super dense neutron star with an incredibly strong magnetic field. The ring seen by Spitzer could not have formed during the original explosion, as any material as close to the star as the ring would have been disrupted by the supernova shock wave. Scientists suspect that the ring my actually be the edges of a bubble that was hollowed out by an explosive burst from the magnetar in 1998. The very bright region near the center of the image is a cluster of young stars, which may be illuminating the inner edge of the bubble, making it look like a ring in projection.

This composite image was taken using all three of Spitzer's science instruments. The blue color represents 3.6-micron infrared light taken by the infrared array camera, green is 16-micron light from the infrared spectograph, and red is 24-micron radiation from the multiband imaging photometer.

(Image credit: NASA/JPL-Caltech)

 

Stephen Hawking Meets Nelson Mandela - Posted - 15 May 2008
The world’s most famous scientist, Professor Stephen Hawking, today met with former President Nelson Mandela for the first time.

Professor Hawking is in South Africa to launch the Next Einstein initiative, to discover and nurture maths and science talent all over Africa. The initiative builds on the success of the African Institute for Mathematical Sciences, AIMS, a pan-African centre for postgraduate training and research, based in Muizenberg, Cape Town. AIMS has so far graduated 160 young scientists from 30 African countries and an additional 53 students, including 20 women, are currently completing the programme. read more ...

 
       
     
     
 
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28 August 2008

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The South African Agency for Science and Technology Advancement (SAASTA) actively promote the public understanding of science and technology in South Africa. Apart from providing the use of facilities at the old Observatory to the Society, they have been the lead non-commercial sponsor for ScopeX (our annual Telescope and Astronomy exposition) since 2003.  The image of the 26-inch telescope's dome that appears on our web page banner was taken by Chris Curry. Logo artwork by Rodney Hyman.