Australian spot on in Jupiter discovery
I’ve got a tiny scar just beside my left eye, the result of a careless act involving me as a five-year-old jumping around near the front door of my house, stumbling and hitting the side of my head on the door’s lock.
The scar though is nothing compared to the one that now graces the planet Jupiter. In fact, the damn thing is so big it is actually the size of Earth.
Looking like a big black dot (pictured above at the top), it was discovered this week, I am proud to say, by a man from ‘Down Under’, 44-year-old amateur astronomer Anthony Wesley, who then contacted scientists at NASA’s Jet Propulsion Laboratory.
In his Observation Report, Wesley first caught sight of the intriguing spot through his big-ass telescope just before 1am, just as he was about to pull the plug on the night’s planet-gazing to watch a bit of cricket and golf.
He initially thought it was just a “normal dark polar storm”. “However as it rotated further into view, and the conditions improved I suddenly realised that it wasn’t just dark, it was black in all channels, meaning it was truly a black spot,” he wrote.
“My next thought was that it must be either a dark moon (like Callisto) or a moon shadow, but it was in the wrong place and the wrong size.
“Also, I’d noticed it was moving too slow to be a moon or shadow. As far as I could see it was rotating in sync with a nearby white oval storm that I was very familiar with – this could only mean that the back feature was at the cloud level and not a projected shadow from a moon. I started to get excited.
“It took another 15 minutes to really believe that I was seeing something new – I’d imaged that exact region only two days earlier and checking back to that image showed no sign of any anomalous black spot.
Anthony Wesley and his 14.5 inch telescope.
Glen Orton, from NASA’s Jet Propulsion Laboratory, told New Scientist, that the spot was most likely the result of a comet or asteroid crashing into the giant gas planet.
NASA collected its own images after being notified by Wesley using its Infrared Telescope Facility in Hawaii.
“Our first image showed a really bright object right where that black scar was, and immediately we knew this was an impact,” Orton said. “There’s no natural phenomenon that creates a black spot and bright particles like that.”
The discovery came 15 years to the day would you believe after the comet Shoemaker-Levey 9 was seen slamming into Jupiter.
Wesley told The Sydney Morning Herald that we humans should feel fortunate our big Jovian brother was protecting us from receiving our own batterings from object from outer space.
“If anything like that had hit the Earth it would have been curtains for us, so we can feel very happy that Jupiter is doing its vacuum-cleaner job and hoovering up all these large pieces before they come for us.”
SOURCES:
Observation Report
New Scientist
The Sydney Morning Herald





