By Guest Space Cadet
By Bible Speaks
Space the Frontier Beyond Our Imagination!
What of the Future?
The Hubble telescope promises greater revelations for the immediate future. One astronomer wrote: “With the Hubble Space Telescope, we’ll see the shapes of many galaxies around the vicinity of quasars [quasi-stellar radio sources, the most luminous objects in the universe].” As to understanding the origin of galaxies, Richard Ellis of the University of Cambridge, England, says: “We’re about to enter a very exciting time.”
Human curiosity will continue to spur the search for knowledge of the universe, its beginnings, and its purpose. Such knowledge should awaken in our hearts reverence for the Creator of the vast universe, Jehovah God, who said: “Raise your eyes high up and see. Who has created these things? It is the One who is bringing forth the army of them even by number, all of whom he calls even by name. Due to the abundance of dynamic energy, he also being vigorous in power, not one of them is missing.”—Isaiah 40:26; Psalm 147:4.
Let me attempt to blow your mind: “Now” travels at the speed of light.
When the light turns green, I don't concern myself with the fact that the light actually turned green a nanosecond earlier than I saw it. As far as the distances we're used to, “now” might just as well be universal.
On interstellar distances, you might expect that the lag start mattering. Except it really doesn't. Maybe Sirius isn't there anymore. Maybe it went supernova five years ago, and the shockwave is riding towards us as you read, and it will hit us in another three years. There's no way we'd know. We look up and see the old faithful Sirius sitting right where it's always been. And we can measure its gravitational influence on us and neighboring stars. There is no knowing it's actually gone, and that's because it actually isn't. To someone in the neighborhood of Sirius, the star is no more, but, to us, it still exist. “Existence” travels at the speed of light.
If the sun was spirited away by a species of prankster kardashev 3 aliens, it would keep “being there” for 8 minutes as far as we'd be concerned.
And those 10 billion light years away stars we see through our telescopes, they are there. Because we can see them.
- Julien Boyer
via .ORGWorld News
By Ann O'Maly
Artwork: Gaia is making the definitive map of our Milky Way Galaxy
Europe’s Gaia space telescope has been used to clock the expansion rate of the Universe and - once again - it has produced some head-scratching.
The reason? The speed is faster than what one would expect from measurements of the cosmos shortly after the Big Bang.
Some other telescopes have found this same problem, too.
But Gaia’s contribution is particularly significant because the precision of its observations is unprecedented.
“It certainly ups the ante,” says Adam Riess from the Space Telescope Science Institute (STScI) and the Johns Hopkins University, both in Baltimore, Maryland, US.
The inability to lock down a value for the expansion rate has far-reaching consequences - not least in how we gauge the cosmic timescale.
If the Gaia speedometer is correct, it would mean having to reduce the estimated 13.88-billion-year age of the Universe by perhaps a few hundred million years.
Read more: http://www.bbc.co.uk/news/science-environment-37438458
By Guest Nicole
‘This is our first opportunity to really take a close-up look at the king of our solar system,’ says a leading investigator
An artist's conception of Juno - who has three Lego "passengers" on board - approaching Jupiter's swirling gaseous clouds Nasa/JPL-Caltech
Juno, the spacecraft on a mission to Jupiter, orbited closer to the giant planet than any man-made object before it, in a record-breaking approach on Saturday.
The Nasa creation, which was launched five years ago, made the close approach to Jupiter by soaring around 2,600 miles above the planet.
As it cruised by at a speed of 130,000 mph, Juno was expected to capture astonishing images and plenty of scientific data, say mission controllers at Nasa.
The probe was said to have reached its closest point at 1.51pm – following the spacecraft’s dizzying flight path which involved escaping Earth’s orbit and moving into Jupiter’s.
Scott Bolton, a principle investigator at the Southwest Research Institute in San Antonio in Texas, said Juno would have its whole suite of nine instruments activated as it soars above Jupiter’s swirling cloud tops. The instruments had previously been switched off so as to survive the entry into the planet’s dangerous radiation belts.
"This is the first time we will be close to Jupiter since we entered orbit on 4 July. Back then we turned all our instruments off to focus on the rocket burn to get Juno into orbit around Jupiter," said Dr Bolton.
"Since then, we have checked Juno from stem to stern and back again. We still have more testing to do, but we are confident that everything is working great, so for this upcoming flyby Juno’s eyes and ears, our science instruments, will all be open.
"This is our first opportunity to really take a close-up look at the king of our solar system and begin to figure out how he works."
Nasa space agents have said they hope to release some of the first detailed pictures of Jupiter's north and south poles. It could take some days for the images to be downloaded on Earth.
Scientists are also anticipating a wealth of data about Jupiter's composition, gravity, magnetic field, and the source of its 384 mph winds.
A British team from the University of Leicester are playing a key role in the mission by focusing on the planet’s magnetic field, its auroras and atmosphere.
There are also some "passengers" onboard the spacecraft, which is powered by three enormous solar panels. These are titanium-built Lego figures of 17th century astronomer Galileo Galilei, the Roman goddess Juno and her husband the Roman god Jupiter.
Scientists celebrate in Mission Control at NASA’s Jet Propulsion Laboratory as the solar-powered Juno spacecraft goes into orbit around Jupiter (AP
It took five years to complete the 1.8 billion-mile journey from Earth, including a trek through circuit-frazzling radiation that requires its flight computer to be armoured in a titanium vault weighing almost 400 lb.
At the end of its 20-month mission, Juno will self-destruct by plunging into Jupiter’s dense atmosphere.
The craft is part of Nasa’s New Frontiers programme of robotic space missions which last year saw the New Horizons craft obtain close-up views of dwarf planet Pluto.
By Guest Nicole