Friday 26 December 2014

Flapping UFO's



UFOS: UNEXPLAINED FLAPPING OBJECTS
In SkyNews (January 2015)
On August 5, 2010, I was out with my telescope observing the night sky from my drive- way in southern Hamilton, Ontario, when I looked up toward the zenith and saw a triangular formation of three bright “orbs” of light moving incredibly fast toward the northern sky. By this time, I had already been observing the night sky for two years and quickly realized the lights were moving too fast and were larger in size and appearance than a satellite. They were also switching positions smoothly and swiftly. My next thought was a meteorite breakup, but there was no trail and no change in luminosity, and these objects persisted at a constant brightness for about 20 seconds before disappearing behind a tree. I could not come up with a plausible explanation.

About eight months later, while walking into The Hamilton Spectator building to attend a meeting of the Hamilton amateur astronomers, I briefly witnessed a similar event in the low eastern sky and still had no explanation. My answer finally came in June 2011. While outside on my driveway observing, I noticed five strange objects moving down the eastern sky. Luckily, I had binoculars with me this time. To my amazement—and embarrassment— I discovered that the strange “ufos” I had told numerous friends and fellow astronomers about were, in fact, Canada geese illuminated just enough by city lights from below to give the geese a strange, almost otherworldly glow, which made it very difficult to see any detail with the unaided eye. I could not hear them flying, and because they were moving about one another in formation, flapping their wings and flying at a fair speed, they gave an eerie appearance that had haunted me for almost a year.

Since then, I have seen Canada geese at night on numerous occasions. however, once I look through my binoculars, I laugh at myself and return to observing. if you witness what at first appears to be a strange triangular formation of alien craft, grab your binoculars, because I would wager that it’s some Canada geese happily on their way. and you can blame light pollution for the interruption.

Kevin Salwach
Hamilton, Ontario

(Het self al saans oor Bloemfontein hierdie wit voĆ«ls - soos bosluisvoĆ«ls gelyk - met my verkyker gesien.  Wonder of hulle die stadsligte vir navigasie gebruik? - Hannes Pieterse)


Tuesday 18 November 2014

Rosetta Images Show Philae Lander Bouncing Across Comet

Click to enlarge image

When the European Space Agency's Philae lander descended to the surface of Comet 67P/Churyumov-Gerasimenko last week, the Rosetta spacecraft's OSIRIS camera was watching from almost 10 miles above. Now a poignant series of images tracks Philae's double rebound — with a parting shot that shows the lander in mid-bounce.
After bouncing twice, Philae settled onto the comet's shadowed surface and operated for almost 57 hours before its batteries ran out. The lander's current location doesn't show up on the OSIRIS imagery released Monday, but the Rosetta mission's managers are confident that it will eventually be spotted. 


Source: NBC News

Saturday 15 November 2014

Our lander’s asleep

With its batteries depleted and not enough sunlight available to recharge, Philae has fallen into 'idle mode' -- a possibly long silence. In this mode, all instruments and most systems on board are shut down.
"Prior to falling silent, the lander was able to transmit all science data gathered during the First Science Sequence," says DLR's Stephan Ulamec, Lander manager, who was in the main control room at ESOC tonight.

Read more

Tuesday 4 November 2014

Tuesday 28 October 2014

"Discover!" and "ConCards"

Click on image to enlarge!


Updates for our popular introductory star charts are now available for free download from the ASSA website.
The short "Discover!" workbook is perfect for getting to know the southern constellations. (Tip: Use the workbook in conjuction with the "Southern Star Wheel" for a complete solution.)
To delve deeper into the constellations, and to explore their deep-sky treasures, get your copy of the updated "ConCards".

Sunday 12 October 2014

Rosetta mission - Philae’s descent and science on the surface



The European Space Agency’s Rosetta mission will deploy its lander, Philae, to the surface of Comet 67P/Churyumov–Gerasimenko on 12 November.

Philae’s landing site, currently known as Site J, is located on the smaller of the comet’s two ‘lobes’, with a backup site on the larger lobe. The sites were selected just six weeks after Rosetta arrived at the comet on 6 August, following its 10-year journey through the Solar System

In that time, the Rosetta mission has been conducting an unprecedented scientific analysis of the comet, a remnant of the Solar System’s 4.6 billion-year history. The latest results from Rosetta will be presented on the occasion of the landing, during dedicated press briefings.

The main focus to date has been to survey 67P/Churyumov–Gerasimenko in order to prepare for the first ever attempt to soft-land on a comet.

Read more...

Blood Moon Photos: Total Lunar Eclipse Pictures from April 15, 2014


    After the Blood Moon comes the Pumpkin Sun

    Click to enlarge!
    On October 7, 2014 [Manila time], active regions on the sun gave it the appearance of a jack-o'-lantern. This image is a blend of 171 and 193 angstrom light as captured by the NASA-Solar Dynamics Observatory. NASA/GSFC/SDO

     Source: GMANews

    It looks like the Moon isn't the only heavenly body giving the skies a creepy feel this month.

    After last Wednesday's "Blood Moon" comes the "Pumpkin Sun" as captured by the US National Aeronautics and Space Administration last Wednesday, October 8.

    Last Wednesday, the moon took on a blood-colored appearance during a total lunar eclipse.

    "Active regions on the sun combined to look something like a jack-o-lantern’s face on Oct. 8, 2014. The active regions appear brighter because those are areas that emit more light and energy – markers of an intense and complex set of magnetic fields hovering in the sun’s atmosphere, the corona," NASA's Goodard Space Flight Center said.

    The Bermuda Triangle of Space: The High-Energy South Atlantic Anomaly Threatens Satellites

    Click to enlarge!
    Source: DefenceNews

    Much fanfare accompanied the Sept. 25, 2010, launch of the Air Force’s Space Based Space Surveillance satellite. The $833 million craft was finally going up to do its job: monitor orbiting items from space itself, free of the time constraints and atmospheric interference that hamper its earthbound counterpart, the Space Fence. Its 30-centimeter telescope, mounted on a two-axis gimbal, would help keep tabs on satellites as far away as geosynchronous orbit as well as thousands of bits of space junk closer in. The builders said SBSS would be on the job within 60 days, and forecast a working life of at least 5½ years.

    Shortly after launch, the satellite passed over the South Atlantic, and things went awry. The satellite was hit by radiation that sent the sensors reeling and knocked out an electronics board payload. Suddenly, the expensive, specially-designed satellite could no longer do what it was built for.

    Read more...

    Saturday 27 September 2014

    Rosetta: Date fixed for historic comet landing attempt

    Philae is about the size of a washing machine.
    It will use harpoons and screws to try to hold itself down

    The date has been fixed for Europe's daring attempt to land on a comet: Wednesday 12 November.
    It will see the Rosetta satellite, which is currently orbiting the huge "ice mountain" known as 67P, drop a small robot from a height of 20km.

    If all goes well, the lander will free-fall towards the comet, making contact with the surface somewhere in a 1km-wide zone at roughly 15:35 GMT.

    The European Space Agency (Esa) says the challenges ahead are immense.

    Imagine pushing a washing machine out the back of an airliner at twice cruising altitude and expecting it to hit Regent's Park in London - all while the ground is moving underneath.

    Although not really analogous for many reasons, this scenario does give a sense of the difficulties involved.

    The chances of failure are high.

    Friday 19 September 2014

    Astronomy Photographer of the Year 2014 - in pictures

    Click to enlarge

    The Royal Observatory Greenwich has announced the winners of this year’s international astronomy photography competition. The observatory’s annual free exhibition, which opened on Thursday, showcases these dazzling images of the sky, ranging from within our solar system to far into deep space. British photographer James Woodend beat over a thousand amateur and professional photographers to win the top prize.

    Inkspot - The only Dark Nebula with it's own wine?


    Is it Barnard 86 with it's own wine label or Inkspot 2010 Vin Noir with it's own dark nebula?

    - Give that man an Inkspot! From Herschel with love!

    Monday 15 September 2014

    Space in Images - 2014 - 09 - Philae’s primary landing site





    Philae’s primary landing site will target Site J, the centre of which
    is indicated by the cross in this OSIRIS narrow-angle image.

    Site
    J is located on the head of Comet 67P/Churyumov–Gerasimenko and is
    close to the candidate site B, the large depression to the right of the
    image.

    Site J offers the minimum risk to the lander in comparison
    to the other candidate sites, and is also scientifically interesting,
    with signs of activity nearby. At Site J, the majority of slopes are
    less than 30Āŗ relative to the local vertical, reducing the chances of
    Philae toppling over during touchdown. Site J also appears to have
    relatively few boulders and receives sufficient daily illumination to
    recharge Philae and continue science operations on the surface beyond
    the initial battery-powered phase.



    Full story: 'J' marks the spot for Rosetta's lander