Black Holes
Use attributes for filter ! | |
Google books | books.google.com |
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Originally published | 1996 |
Authors | Heather Couper |
Illustrators | Luciand Corbella |
Date of Reg. | |
Date of Upd. | |
ID | 2403395 |
About Black Holes
Black holes are the most mysterious and misunderstood elements in the universe. Although no one has ever seen a black hole, Black Holes explains and depicts these mystifying objects. . . .
Scientists see early universe in slow-motion for first time
... Researchers observed data from quasars - objects powered by " supermassive" Black Holes at the centre of early galaxies - using them to measure time near the beginning of the universe...
Scientists pick up shock waves from colliding galaxies
...By Pallab GhoshScience correspondentScientists have picked up shock waves from the orbit of supermassive Black Holes at the heart of distant galaxies as they begin to merge...
Astronomers detect largest cosmic explosion ever seen
... All galaxies are thought to have giant Black Holes at their heart...
The countries launching missions to the Moon and beyond in 2023
... China plans to put a telescope called Xuntian into low Earth orbit in December 2023, to map distant stars and Black Holes...
Giant Lovell radio telescope at Jodrell Bank to become space light show
... The Lovell telescope is now involved in studies of cosmic objects, including supermassive Black Holes in other galaxies, which were not even known to exist when Manchester physicist Sir Bernard Lovell designed and built the giant telescope...
Neutron star chaser: Telescope spots dead suns crash
......
Mariupol steelworks evacuees: 'We were losing hope that we would ever get out'
... " But the war had taken its toll on their home city, which they saw the wreckage of as they left: " What we saw were just boxes with massive Black Holes in them...
Scientists claim hairy black holes explain Hawking paradox
... He highlighted that Black Holes behave in a way that puts two fundamental theories at odds with each other...
Neutron star chaser: Telescope spots dead suns crash
Scientists have developed a new telescope to detect the collisions of dead suns known as neutron stars.
The Process is thought to create The Heavy metals in The Universe including gold and platinum.
The Stars are made from a substance that is so heavy that a small teaspoon weighs four billion tonnes.
I went to see this instrument high in The Mountains that allows astronomers to effectively crack open a Neutron Star to see what is inside.
I met Prof Danny Steeghs, of Warwick University, on the volcanic island of La Palma , Spain. The Clouds spread like a white fleecy carpet below us.
The Telescope is on A Mountain peak, home to a dozen instruments of all shapes and sizes, each studying different phenomena. They gleam in the Late Afternoon , straw-coloured sunlight scattered across The Peak like white and silver sculptures.
This latest addition allows scientists to see neutron stars " being smashed together and observe the rich Material that comes out of this explosion, " Danny, who leads The Project , tells me.
It was in this environment In Space where heavy elements like gold and platinum began to be formed billions of years Ago - Material that ended up in stars and planets like ours.
Danny's telescope system is more like artillery than art. As The Twin domes open, they reveal two jet-black batteries of eight cylindrical telescopes bolted together. They look like menacing rocket launchers. Each battery covers every patch of sky above it by rapidly rotating vertically and horizontally.
They are designed to be nimble. The Light from colliding neutron stars is visible in The Night sky for only a couple of Days - it is a race Against Time to pin-point its location.
A Neutron Star is a dead sun that has collapsed under its immense weight, crushing the atoms that once made it shine. They have such strong gravity that they are drawn to each other. Eventually they crash together and merge.
When that happens, it creates a flash of light and a powerful shockwave Ripples across The Universe . It makes everything in The Universe wobble, including, imperceptibly, the atoms inside of us.
The shockwave, called a gravitational wave, distorts space. When it is detected on Earth, Danny's telescope, called the gravitational-wave optical transient observer (GOTO), scrambles into action to find the exact location of The Flash .
All hands on deck, But it was more by luck than design. Now, GOTO has been built in order to systematically search for then.
" When a really good detection comes along, it's all hands on deck to make The Most of it, " Danny tells me with his typical enthusiasm.
" Speed is of The Essence . We Are looking for something very short-lived - There 's not much time before they fade away".
They want to locate flash in the sky within hours, or even minutes of the gravitational wave detection. The researchers take photographs of the sky And Then digitally remove The Stars , planets and galaxies that were There the previous night. Any spec of light that wasn't There before may be the colliding neutron stars.
This normally takes Days and weeks, But now it must be done in Real Time . It's a big task, done using computer software.
" You would think that these explosions are very energetic, very luminous, it should be Easy - But We Are having to search through a hundred million stars for The One object that We Are interested in. We have to do this very rapidly because the object will disappear within Two Days , " explains Danny's colleague, Dr Joe Lyman.
Once the astronomers pinpoint the collision, they turn to larger, more powerful telescopes across The World . These probe the collision in much greater detail, and at different wavelengths.
This process is " telling us about physics at the extreme, " Dr Lyman explains.
Gravitational Waves - Ripples in the fabric of space-time
The mountain peak brings the astronomers a little bit closer to The Stars . With The Telescope they have a new way to peer into the cosmos, says GOTO's instrumentation scientist, Dr Kendall Ackley.
Traditional astronomy was about being lucky, she says. " Now we're not hoping for new discoveries anymore. Instead, we're being told where to find them, and getting to uncover, piece-by-piece what lies Out There in The Universe . "
As The Sun sets, Danny, Joe and Kendall begin setting up GOTO, in the red and amber glow before nightfall. As they begin their search for the violent collisions Far Away , they hope it will forever change our understanding of how The Universe came to be.
Source of news: bbc.com