Countdown For Cassini, Plumes on Enceladus, And The Pale Blue Dot

The Countdown for Cassini nears its end - only a few days now to its 'Grand Finale' , following an epic twenty years of exploration in the Saturnian system, and some truly amazing finds-
as well as releasing the furthest ever man- made probe to land on another world (when Huygens landed on Titan), Cassini has also relayed a treasure trove of new knowledge about the mysterious gas giant and its moons - eye opening stuff, like the amazing plumes of water on Enceladus - tantalising and interesting enough to have sparked further exploration
The proposed Enceladus Life Finder- ELF mission is a possible contender in 2020 - the other being LIFE, which is intended to bring samples back to Earth - but we all know how that plays out......

Cassini dived through the water plumes on Enceladus in 2015

Not to be out done (by themselves), NASA simultaneously released the news that the Hubble telescope had seen water plumes on Jupiters moon Europa.
The legacy of Cassini will be covered in its final moments, more thoroughly than I can, so I will restrain myself from further outpourings - but I am proud and humbled to see such wonders in the heavens - proof of what can be achieved when humanity sets aside the petty politics and squabbles that consume so much energy.
The final 'swan-song' dive will furnish us with further science, and for that, I am grateful.

It's forty years for the two Voyager craft in space, and with Voyager1 now travellimg outside our solar system (40,000 yrs until the next star) , it's up to New Horizons to clinch the next rendezvous as it fast approaches the mysterious object MU69 - ok, so fast is relative with MU69 penciled in for a flyby in 2019, but in space terms, that's soon.
It also promises to be the closest flypast yet.

The journey of the Voyagers has blazed a trail, forcing us to upgrade our listening capabilities as they get further away, and let's not forget that the Voyager craft also produced the first images of planets in our solar system that were more than fuzzy blobs - and also the famous image of Earth known as the 'pale blue dot', taken by Voyager One in 1990:

'The Pale Blue Dot' -    Feb 14 1990  NASA/JPL

Tractor Beams and Space Junk

Did you know that we 'Earthlings' are surrounded by a 'bubble' of our own sounds / t.v. / radio transmissions?
Apparently it stretches 200 light years around us, which is pretty big, but on a cosmic scale, is tiny.
And yet no aliens have been in touch.
Perhaps they saw X Factor.

In Other News...
Scientists in the uk have successfully manipulated a physical object  using only sound waves.
Okay, so it's only a tiny bead, but it's a start.
Tractor Beams are real
The Future is now!

I was thinking of this the other day - the bewildering exponential curve of everything.
Is it me or is the curve of science and discoveries going through the (virtual) roof ?
In tihs blog, I tend to focus on a narrow band where my personal interests lie, which is mainly all things related to space travel and exploration.
In that field alone, we've seen some astonishing advances in this year - the first close up images from Pluto and its moons, ongoing examination of Mars by the Curiosity rover, now yielding details of ancient rock strata and riverbeds : we landed an explorer on a comet, whilst maintaining the benign presence of an orbiting mothership. Another explorer, (Cassini), which was tasked with mapping the moons of Saturn is now testing water plumes from Enceladus, Maven has just entered orbit around Mars, joining the Mars Express and Mars Reconnaisance Orbiter and moves are afoot to send initial human missions to Mars as well as further moon exploration  - a mooted joint venture between the ESA and Roscosmos.
'Dawn' is entering a lower orbit for final close passes of planetoid Ceres in December .
And meantime, one of our furthest explorers, New Horizons is heading for rendezvous with KBO 2014MU69
Keppler is searching for exoplanets in the 'habitable zone' of distant stars.
Voyagers one and two are heading into deep space.
It's busy out there...

  It's a busy solar system! No parking at any time...                     pic by Olaf Frohn . 

Then there's the ISS
As well as an endless band of satellites in a ring around us.
And space junk.
Officially known as 'Orbital Debris'.
At the last count 50,000 pieces orbiting planet Earth, ranging from tiny flecks of paint to objects the size of a family car

Speaking of which - did you know that an unknown object will fall to Earth on Friday 13th November ?
Unlucky for some.
Apparently it's hollow space junk, and whilst this is fairly common, this one is being monitored for reasons unknown.
It has even been given a classification : WT1190F (or WTF in popular parlance).
The 'WTF' is accurate really, as they actually don't know what it is - cue spooky music - (theremin)
Theories range from an alien vessel to the Biblical millstone cast into the sea by God, thus fulfilling Revelation 13- ahem.
Anyway, they are pretty sure it will land in the Indian Ocean, approximately 5 km south of Sri Lanka - and woe betide any local fisherman in that triangulation.

            Landing area of WT1190F  (approx 5 km)                      Pic © Bill Gray   Project Pluto