Showing posts with label exoplanet. Show all posts
Showing posts with label exoplanet. Show all posts

Saturday, 11 August 2018

Touching The Sun, Mission To Alpha Centauri, For Whom The Signals CHIME

This blog was hurriedly assembled to mark the launch of the historic Parker Solar Probe

Delayed lift-off ...

24 hours later 
The probe finally launches  aboard Delta IV Heavy


Today saw the re-scheduled* launch of the Parker Solar Probe, as it now bravely heads for the sun on a one - way mission to gather new information about our mighty star .
It is hoped that a working knowledge of the mysterious 'solar wind' can be gained - not least an understanding of why the temperature four million miles away is approximately 200 times hotter than the surface temperature of  the sun itself (a mere 5700 degrees C).
The mission is a vindication of scientist Eugene Parker, who first proposed the idea of the solar wind many decades ago (in the 1950s), but was refuted - until 1962, when the Mariner 2 craft reported a strong solar wind on its journey to Venus.
The solar wind extends beyond the end of our solar system , and was only recently breached by Voyager 1, which became the first human-built craft to enter interstellar space in 2012...
 The Parker Solar Probe will be the closest ever human - made object to the sun, dwarfing the previous record of approx 28 million miles.
Four million miles may seem like a considerable distance from the heat of the sun, but don't forget that the nearest planet, Mercury, is an average of 35 million miles away , and still gets daytime surface temperatures of 450 degrees celsius...
The Parker Solar Probe will become the fastest moving human built object ever, when it reaches a blistering (literally) 430,000 miles an hour at its fastest and closest approach to Sol in December 2024  , aided by a gravity 'slingshot' from Venus.
Part of its payload is a list of over one million names of people who applied to 'travel' - being superstitious, I thought it smacked of 'solar sacrifice', so my name is only on a boarding pass on the Insight craft...

Artist impression of the Parker Solar Probe                 image: NASA
In Other News...

 A meteorite that dates from a mere 2.5 million years after the ' Big Bang' has potentially changed the understanding of the formation of volcanic rock throughout the galaxy.

NASA has chosen the nine astronauts who will fly the next crewed missions to launch to the I.S.S. beginning next year. It feels like the next logical step, as all eyes look to the stars - well, Mars. Personally, I think it more likely that we are practicing for the eventual mining of asteroids, an untapped market worth an estimated three trillion dollars.; but then, I'm just an old cynic...

Staying with NASA, plans are afoot to send a mission to an exoplanet by way of marking the hundredth anniversary of the Apollo 11 mission, which landed the first humans on the moon.
The exoplanet candidate for this mission is part of the Alpha Centauri system, a mere four light years from here.
Hopefully, by the anniversary date of 2069, the small technical hitches (speed of light travel, deceleration, etc) will have been eradicated. The idea was mooted at a conference by Anthony Freeman of JPL, who then said the plans were " Nebulous" (laughter emoji)

                                                       Andre Renard / Dunlap Institute, CHIME

In other news, a brand new radio telescope in British Columbia, Canada has detected an FRB (180725A ) emanating from some 3 billion light years away.  The amount of energy required to send a radio signal over such a distance is phenomenal; one source equated it with moving a load weighing a million tons - okay, that means it's probably a couple of black holes colliding, or a pulsar, but even so...
What also makes this FRB so unique is that it has a low frequency of 580 mhz, rather than the standard 700 mhz. Exactly what this implies, I'm not sure, but I hope that the aliens using the signal as a carrier beam are friendly...
On this note, I repair to my safe room, and take my medications...
Until next time, I hope all is well in your corner of the multi-verse !


* These things happen - flocks of birds, meteors, Godzilla, that sort of thing

Monday, 6 November 2017

Sunscreen Rains , The Cameras of Mars, Rogue Worlds And Tiny Suns

I love seeing the sand dunes of Mars, frequently pictured by the MRO.

Beautiful 'linear gullies' on Mars      MRO/NASA/JPL


They  have found a giant planet orbiting a tiny sun , 600 light years away, in the obscure constellation of Columba.
What makes it notable is the bizarre scale (a planet the size of Jupiter orbiting a dwarf star so closely that its year only lasts two days)
Technically, the giant world should not exist at all, especially in such close proximity.
I favour the idea that it is a rogue world, somehow captured by the dwarf sun.
Without an observatory in my vicinity, it's guesswork, but there appear to be a few 'rogue' stars in the constellation.

The Hubble telescope just spotted an exoplanet where it rains sunscreen. At 5000 degrees farenheit, the titanium-oxide rain would hardly be protective...




There is a good deal of excitement at the latest object (A/2017 U1) spotted in our universe -mainly because it appears to have come from another solar system

Indications are that the object is red , similar to Kuiper Belt Object MU69
In which case, is mu69 from another sun , too ?
I find it oddly comforting to know that people are determined to identify and archive these things
 ( thanks to Pedro Lacerda for that link I stumbled across )
The other side of this coin is that we didn't see the asteroid coming, so there is no planned 'sortie' , Bennu style, to gather information about its composition / origins.
Researching this piece led me to this thread from Reddit, which re-affirms my faith in humanity as a curious, knowledge - hungry species...

Red asteroids don't exist- at least, in our solar system- so this points towards A/2017 U1 being an icy, KBO-like object. Why, then, didn't it develop a cometary tail as it passed by the sun? It's honestly confusing. Perhaps the billions? of years it flew through interstellar space drove away all its volatiles?
Clearly there's a lot about the surface composition of interstellar asteroids that we don't know!
[–]FaceDeer 9 points  
I'm very happy to have made it to a portion of history where investigating the composition of interstellar asteroids is a thing.

I also learned about the designation which changed from C2017 U1 to A2017 U1 - from a comet to an asteroid, as it did not exhibit a 'tail', outgassing as it passed the sun.
Apparently this unique little red rock will never pass this way again, it came in from the direction of the constellation Lyra, and was heading out towards the Kuiper Belt .


Rearview from Curiosity    NASA/JPL

23 Cameras for the next Mars Mission

In keeping with our current trend for pictures everywhere, the next Mars rover will have 23 cameras - including 3D .
Opportunity rover has a pair of B/W cameras mounted in front to produce stereo images , and another two mounted on the rear of the rover, presumably to monitor bad drivers behind.
The Curiosity rover has 17 cameras. This means that , including the MRO  and Opportunity, there are already 24 cameras on Mars - with another 23 enroute, it won't be long before we have pictures of rovers photographing rovers taking pictures of Mars...

Speaking of rovers armed with cameras,  way back in 1971, the Apollo 17 mission rover had only two cameras and even a compartment for spare film magazines- bulky payloads in the days before Micro sd cards  (although, at least they didn't get so easily lost).
Spare a thought, though, for the nightmare of moon dust in the lens...




Apollo17 Lunar Buggy with ominous ' Secondary life support system'

Please excuse the format problems, I plead ignorance of cut 'n' paste procedure.


G

Saturday, 5 November 2016

Touchdown , Smackdown , Saturn and Giant Wombats

16 sunrises every day on the ISS


It is now 21 years since the discovery of  the first exoplanet , 51Pegasi B, in the constellation of Pegasus.
Following this find , the number of exoplanets has rocketed ( no pun intended) , and now stands at  approximately 3500 
Whilst many exoplanets are woefully unsuitable for Earth comparisons - 51Pegasi B is a 'hot Jupiter', a tidally locked world that orbits its sun every four days with an average surface temperature of 1200°c .
The figure of 3500 exoplanets gives only a tiny fraction of potentially Earth - like worlds - personally, I think we're wasting precious resources looking for our own reflections.
Are we a world of Narcissists ?
Actually...

NASA celebrates 16 years of the ISS in orbit with the release of an amazing selection of  gifs charting the development of the little 'space colony '.
 A recent touchdown of returning crew from the ISS in Kazakhastan  generated some great photos courtesy of  Bill Ingalls




Returning Soyuz capsule    pic NASA/ Bill Ingalls




Saturn pic Cassini   NASA


The mysterious hexagon , which is bigger than Earth at Saturn's north pole has changed color,
shifting from blue to gold...speculation abounds online that the planet is the solar systems mood-ring.
Meanwhile, it is revealed that Saturns moon Titan is littered with steep- walled canyons filled with liquid methane .
Stunning views and fine sailing for anyone brave enough...seriously though, when Cassini reaches the end of its tenure, there is a proposed submarine mission 


Giovanni Cassini's journals.
He discovered four of  Saturn's moons
between 1671-1684

 Meanwhile on Mars...

The dauntless explorer Curiosity is still roving over the rugged martian landscape.
Its latest find is a meteorite ( known as egg-rock) composed of a nickel / iron mixture .
Whilst it's not exactly big news, I include it here as evidence that NASA are scanning images for even such small oddities - although they obviously missed the squirrel , witchy woman and alien -crab -thingy amongst other uncanny similes.
For those who wish to conduct a post -mortem , the wreckage of the ill- fated Schiaparelli has been imaged by the Mars Orbiter.
I hope that someday the wreckage can be displayed alongside Beagle II and remnants of the many other ill- fated expeditions to the ' Red Planet'.
No doubt the Curiosity rover will be first in line to mock its failed predecessors / rivals in an understated , robotic way

Following the revelation that there are huge amounts of galaxies ( at least two trillion ) in the observable universe, it's the brain- melting number -crunch time again.
Apparently dark matter ( the theoretical crazy-glue of the cosmos) is comprised of trillions of axion particles.
Trillions of axions in every cubic centimeter of the universe.
Ponder.
Feel incredibly small.
Then get annoyed at all the ' ifs' and ' possiblies' associated with what is undoubtedly impressive but almost totally conjectural work.
Personally, I was initially impressed, but increasingly angered by the vagueness of the piece ( see above link).
Perhaps.


MEANWHILE, BACK ON EARTH...

A mysterious 'ping' sound emanating from the seabed in the Arctic is being investigated by the Canadian military .
Early reports dismiss industrial exploration and international subterfuge .
Apparently this ping is pretty serious then , or we're involved in a publicity scam for a new X-files movie....

In the last post, I mentioned the discovery of a hybrid cattle / bison species depicted in cave paintings - now we hear of a discovery indicating that Australia was populated 10 000 years earlier than previously thought.
Evidence has emerged with the discovery of bone fragments, weapons and egg shells in the Australian outback.
The media spin tells us that a man made the discovery when he was caught short and decided to answer the call of nature in a rocky shelter .

Other ancient discoveries recently include what may or may not be a dinosaur brain.
Found some 50 miles from London , ( for the politically inclined, there are dinosaur brains in London , in the Palace of Westminster, which are still functioning in a rudimentary fashion) it is currently being studied as a rare anomaly  (soft tissue tends to degenerate quickly , leaving no trace)  by a Paleobiologist - blimey - first I knew of such a profession !

Finally , a tip of the hat to the tireless writers of  Gizmodo , ( particularly the excellent work of Maddie Stone) , the Planetary org , NASA and  also thanks to you for indulging this weird little micro -blog 
Until next time

G Alias Me





Saturday, 30 April 2016

Animal Saboteurs from the Future, Red Dragon on Mars, and Storms in Space

Weasel
Marten

The humbling effect of nature reaches us through this weeks news that the multi-billion dollar Large Hadron Collider was recently taken down and rendered inoperable .
Terrorist action ?
No, apparently a weasel chewed through an electrical cable.
I say apparently , as it is yet to be determined whether the culprit is indeed a weasel, or a marten.
Either way, given the frazzled nature of the poor interlopers remains, it may never be conclusively proven.
It seems that incursions by wildlife are an occupational hazard for particle accelerators like the LHC.
In 2009, a bird dropped a 'piece of baguette' onto an electrical substation above ground, causing a dangerous heat surge in sector 81.

Also, a report dating from way back in 2006 tells of a ' co-ordinated attack' (May 30th entry) by raccoons on the Fermilab accelerator in the USA .

Fermilab, Illinois
It could be argued that the animal kingdom is determined to undermine these experiments - two physicists have actually proposed a theory that the animals are time travelling saboteurs, I kid you not - read this link to TIME magazine !
It's odd how something so bizarre as the ongoing search for theoretical particles renders the most outlandish ideas as somehow - normal .
Anyway, my attempts to further research the unusual animal interventions at Particle Accelerators led to a world of conspiracy, with wayward physicists and exploding magnets.
Then I took a deep breath and stepped back from the abyss...

Footnote
It appears that the creature involved was a beech marten , although whether it was a time- travelling saboteur determined to prevent the Earth from certain apocalypse by misguided physicists remains unknown .
As of 29/04/16 it will be a week until the LHC is back in action.


MEANWHILE, UP IN SPACE...

Space X have announced their intention to land a ' Red Dragon' craft on Mars in 2018, a feat which, if accomplished , will provide a major boost to the idea of colonising space.
Their recent successful launches and recovery of first stage Falcon rockets prove that where there is a will, there is a way - and NASA will be watching closely  (and no doubt with a tinge of jealousy) at the progress of the mission.


FURTHER OUT...
Neptune - roughly the size of Hat-P-11B

A previously unexplained radio signal from space now has an explanation - using complex algorithms, scientists have discovered that the signals from a large, icy exoplanet some 122 light years away were infact triggered by an immense storm estimated to be five hundred times bigger than anything on Earth.
So they now have an answer for strange signals from space - " Oh, that's nothing special -  it's raining on Hat - P - 11B "
So even in deep space, we can talk about the weather...