How white holes (might) be created. Bright galaxy sheds light on early Universe. Astronomers said on Wednesday they had snared light from a bright, ancient galaxy with a super-massive black hole at its core, a finding that would help explain aspects of the young Universe.
The phenomenon is called a quasar, which are very bright but very distant galaxies with a mighty black hole at their heart. Until now, the most distant quasar ever seen sent light 870 million years after the Big Bang, which is believed to have occurred nearly 13.7 billion years ago. This record has now been beaten by European astronomers, who after a five-year probe found a quasar whose light was emitted just 770 million years after the cosmic birth. ULAS J1120+0641 has a "redshift" -- a signature of red light that is a telltale of distance -- of 8.6, meaning that the light took 12.9 billion years to reach us.
"This quasar is a vital probe of the early Universe," said team leader Stephen Warren of the astrophysics group at Imperial College London. Space Solar Power. Stellarium Wiki. Carl Sagan, Stephen Hawking and Arthur C. Clarke - God, The Universe and Everything Else. Most Distant Quasar Found. A team of European astronomers has used ESO's Very Large Telescope and a host of other telescopes to discover and study the most distant quasar found to date.
This brilliant beacon, powered by a black hole with a mass two billion times that of the Sun, is by far the brightest object yet discovered in the early Universe. The results will appear in the 30 June 2011 issue of the journal Nature. "This quasar is a vital probe of the early Universe. It is a very rare object that will help us to understand how supermassive black holes grew a few hundred million years after the Big Bang," says Stephen Warren, the study's team leader. Quasars are very bright, distant galaxies that are believed to be powered by supermassive black holes at their centres. The quasar that has just been found, named ULAS J1120+0641 , is seen as it was only 770 million years after the Big Bang (redshift 7.1, ).
"It took us five years to find this object," explains Bram Venemans, one of the authors of the study.
Espace. Solar flare filmed by Nasa - video. Some black holes may be older than time. Stuart Gary for ABC Science Online Updated Fri 6 May 2011, 5:48pm AEST An intriguing new hypothesis suggests some black holes could have formed before the formation of our universe.
The work by Professor Bernard Carr from Queen Mary University in London and Professor Alan Coley from Canada's Dalhousie University, examines a cosmology in which the universe goes through cycles of birth and death. According to their work published on the pre-press website arXiv.org, some black holes could be remnants of a previous universe that collapsed in a big crunch and was then reborn in the big bang - 13.7 billion years ago. Called primordial black holes, they would be formed in the hyper dense conditions existing in the moments after the big bang. Professor Carr and Professor Coley say if the universe expands and contracts in cycles of big bangs and big crunches, some primordial black holes may survive.
Pushing the boundaries Topics: the-universe, blackholes, mathematics, physics, england, qld, canada. 1153 - Christmas Comet Lovejoy Captured at Paranal. Eso1153 — Photo Release 24 December 2011 The recently discovered Comet Lovejoy has been captured in stunning photos and time-lapse video taken from ESO’s Paranal Observatory in Chile.
The comet graced the southern sky after it had unexpectedly survived a close encounter with the Sun. A new time-lapse video sequence was taken by Gabriel Brammer from ESO less than two days ago on 22 December 2011. Gabriel was finishing his shift as support astronomer at the Paranal Observatory when Comet Lovejoy rose over the horizon just before dawn. In the words of Gabriel Brammer himself: “On the last morning of my shift I tried to try catch it on camera before sunrise. The sequence also features the pencil-thin beam of the VLT’s Laser Guide Star set against the beautiful backdrop of the Milky Way, as astronomers conduct their last observations for the night. Comet Lovejoy has been the talk of the astronomy community over the past few weeks.
Notes More information Links Contacts. Solar Activity and Human Behavior: a link? In response to an earlier post I did about Solar Flares and GPS disruption, someone commented about the affects that solar activity can have on human behavior.
Having read more about it since then, it seems that there are some interesting correlations. Here are some links I found on the subject: Sunspots and Human BehaviorThis article was published in the year 2000, just after the last Solar Maximum: The recent Solar Maximum gives us a wonderful opportunity to observe the Sun in action. Borderland Sciences has been investigating the relationship of the Sun and human behaviour for many years, and we are quite confident that we can predict behaviours based on sunspot fluctuations over very short and long durations within the Solar Cycle of 11 years.
It's interesting, but I want more proof. The Evidence: Historical Events During Sunspot Cycle Heights (1750-2000) A. . [...] Ms. Could Cycles of War or Peace Be Tied to Cycles of the Sun? [...] So do I believe it? Space Shuttle Discovery - 360VR Images. Eta Carinae's 21-Year Outburst: A Cosmic Instant Replay! : Starts With A Bang. “Not explaining science seems to me perverse.
When you’re in love, you want to tell the world.” -Carl Sagan Nothing lasts forever in this Universe, not even the seemingly timeless stars in the sky. At any moment, any one of the brilliant, twinkling points of light from across the galaxy could run out of fuel, ending its life as we know it. It’s happened a number of times before in recorded history, and will no doubt happen again. Image credit: F. In most constellations, astronomers name the brightest star “Alpha,” the second brightest “Beta,” and so on. Well, almost etc. Image credit: © 2003 Torsten Bronger, annotated by me. Where that big red circle lives, with arrows pointing at it, lies what once was the seventh brightest star in the ancient constellation of Argo Navis: Eta (or η) Carinae. The star is still there, mind you, but it’s not nearly as bright as it used to be. Image credit: Celestia, by author / user HeNRyKus.
Image credit: University of Minnesota. Types of solar and lunar eclipses. Eclipses have been the subject of superstition and scientific curiosity throughout history. timeanddate.com explores the different types of eclipses.
The Moon obscures parts of the Sun's disk during this 2006 partial solar eclipse. ©iStockphoto.com/Hans-Walter Untch Types of solar eclipses Solar eclipses only happen at New Moon, when the Moon moves between Earth and Sun and the three celestial bodies form a straight line: Earth - Moon - Sun. A total solar eclipse occurs when the moon completely covers the sun, as seen from Earth. Total solar eclipses explained Partial solar eclipses can be observed when only the lunar penumbra (the partially shaded outer region of the shadow cast by an object) touches the Earth. Partial solar eclipses explained Annular eclipses occur when the Moon appears smaller than the Sun as it passes centrally across the solar disk and a bright ring, or annulus, of sunlight remains visible during the eclipse.
Annular solar eclipses explained Tips on viewing eclipses. Solar Eclipse Page. The next Total Eclipse of the Sun Visible from the USAClick for special web page on the Total Solar Eclipse of 2017 Aug 21 Solar Eclipses: Past and Future The following links give detailed descriptions of all eclipses of the Sun and Moon from 2000 through the current year.
Solar Eclipses: 2011 - 2020 The table below lists every solar eclipse from 2011 through 2020. S WMAP Science Team Awarded 2012 Gruber Cosmology Prize. NASA's WMAP Science Team Awarded 2012 Gruber Cosmology Prize NASA's Wilkinson Microwave Anisotropy Probe, known as WMAP, transformed the science of cosmology by establishing the age, geometry, and contents of the universe to astonishing precision.
On June 20, the Gruber Foundation recognized this accomplishment by awarding its 2012 Cosmology Prize to WMAP principal investigator Charles L. Bennett at Johns Hopkins University in Baltimore and the science team he led. "It is tremendously exciting to be recognized with the Gruber Cosmology Prize," said Bennett. "I have been very fortunate to work with the talented and fine people of the WMAP team, and I am particularly delighted that our entire science team has been honored with this prestigious award.
" Image of Charles Bennett courtesy JHU WMAP was launched June 2001 to make fundamental measurements in cosmology, the study of our universe as a while. This is the second time that Bennett has been honored by the Gruber Foundation. “Dr. Eclipse Web Site. View Sky Calendar for: Current Month View Sky Calendar for Year: | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | The next Total Eclipse of the Sun Visible from the USAClick for special web page on the Total Solar Eclipse of 2017 Aug 21 Eclipses of the Sun Eclipses of the Moon Planetary Transits Across the Sun Solar System Data Generate sky events calendar: SKYCAL: Sky Events Calendar Sky Events Calendars: | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Sky Events Tables: | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Phases of the Moon from 2001 to 2025 (select Time Zone)- [UT] [EST] [CST] [MST] [PST] Phases of the Moon from -1999 to +4000 - Six Millennium Year Catalog of the Phases of the Moon Celestial coordinates for Sun, Moon and planets: Twelve Year Planetary Ephemeris: 1995 - 2006 All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy.
Bad Astronomy. Well now, this is an interesting discovery: astronomers have found what looks like a "super-Earth" – a planet more massive than Earth but still smaller than a gas giant – orbiting a nearby star at the right distance to have liquid water on it! Given that, it might – might – be Earthlike. This is pretty cool news. We’ve found planets like this before, but not very many! And it gets niftier: the planet has at least five siblings, all of which orbit its star closer than it does.
Now let me be clear: this is a planet candidate; it has not yet been confirmed. The star is called HD 40307, and it’s a bit over 40 light years away (pretty close in galactic standards, but I wouldn’t want to walk there). Massive planets tug on their star harder, so they’re easier to find this way. In this case, HD 40307 was originally observed a little while back by HARPS, and three planets were found. We don’t know how big the planet is, unfortunately. That’s exciting because of the prospect for life.
Your Age on Other Worlds. Looking at the numbers above, you'll immediately notice that you are different ages on the different planets. This brings up the question of how we define the time intervals we measure. What is a day? What is a year? The earth is in motion. Actually, several different motions all at once. The top-like rotation of the earth on its axis is how we define the day. The revolution of the earth around the sun is how we define the year. We all learn in grade school that the planets move at differing rates around the sun. Why the huge differences in periods? Kepler briefly worked with the great Danish observational astronomer, Tycho Brahe.
Here you see a planet in a very elliptical orbit. Kepler's third law is the one that interests us the most. Let's just solve for the period by taking the square root of both sides: Note that as the distance of the planet from the sun is increased, the period, or time to make one orbit, will get longer. The Gravity Of The Situation Your Weight On Other Worlds. Mysteries in slow motion: Videos offer a glimpse into an aerial world we never see. By Daily Mail Reporter Updated: 00:27 GMT, 15 January 2012 A series of high-speed animal flight videos are producing an amazing glimpse aerial world most of us have never seen before.
Amateurs videographers, with a bit of luck, can use inexpensive digital cameras to turn blurred images into clear illustrations of animal and insect behaviour. A Dutch programme named Vilegkunstenaars asked videographers and animal lovers around the world to capture nature in flight, digg.com reports. They sent high speed video tools to amateurs and the results that came back were stunning. Scroll down for videos Rough, tough world: A sparrow clings on as a bully barges him out of the way at the feeder before pushing him away with his leg In one year the contest attracted 460 amateurs who between uploaded more than 2,400 slow-motion video clips that were taken on their complimentary cameras. The jury was made up of video experts, philosophers and scientists. Another clip shows a fly doing a somersault.
Especiales de lainformacion.com - Sol - Zoom. 2011 Solar & Lunar Eclipse Skywatching Guide. There will be two total lunar eclipses and four partial solar eclipses in 2011. January 4 Partial Solar Eclipse This partial eclipse will be visible at sunrise in northwestern Europe and northwestern Africa, at midday in northeastern Africa and the Middle East, and at sunset in central Asia. Times of maximum eclipse and magnitudes at major cities: June 1 Partial Solar Eclipse This partial eclipse is visible mainly in the high Arctic. Times of maximum eclipse and magnitude at major cities: June 15 Total Lunar Eclipse This will be an almost central total lunar eclipse. July 1 Partial Solar Eclipse This partial eclipse is visible only in a small area of ocean near Antarctica, south of Africa November 25 Partial Solar Eclipse This partial eclipse will be visible from southern South Africa, Antarctica, and New Zealand. December 10 Total Lunar Eclipse This total eclipse is well placed for observers in eastern Asia, Australia, and northwestern North America.
Source: RASC Observer's Handbook 2011. Scale of the Universe (flash) Types of solar and lunar eclipses. The Holographic Universe. EXOSOLAR. Meteorites delivered gold to Earth. 8 September 2011Last updated at 18:24 By Leila Battison Science reporter A burst of meteorite impacts around 3.9 billion years ago delivered precious metals to Earth Scientists have shown that the Earth's surface became enriched with precious metals by impacting meteorites. The Earth's crust and mantle has considerably more gold than expected from favoured models of planetary formation. A study from the University of Bristol looked at some of the oldest rocks on Earth, demonstrating that gold was delivered by meteorites long after their formation. Their results are published in Nature.
While the Earth was forming, iron sank to the centre of the planet, forming the core. Any precious metals in the planetary mix would have gone with this iron and concentrated in the core, leaving the mantle devoid of elements such as gold, platinum, and osmium. But this is not what we observe. Impact theory Earth formed by a snowball-effect known as accretion 4.55 billion years ago. The Incredible Beauty of the Orion Nebula. Tûranor PlanetSolar: World's Largest Solar Ship Set to Complete Trip Around the World. Mission to Mars meets reality TV. IBM Ad for SAGE, A Massive Cold War Air Defense System (1960)
Science Projects. Zooniverse - Real Science Online. Solar Eclipse Page. Beautiful Photographs of Star Trails Above Australian Outback. Why the universe probably is "flat" E X P E R I E N C E. We Choose the Moon: Pre-launch. Brief Answers to Cosmic Questions. Elcorreo.com. Photos: Multicolored Auroras Sparked by Double Sun Blast. The Scale of the Universe. Planet Hunters. Solar system. Best Free Astronomy Software.
Videos. News on Astronomy & Space. Astromy & Space Magazines. NASA. Astronomy Pearlers. Interactive Space. Astronomia. Escorpión en rojo y azul. - StumbleUpon. Stephen Hawking: 'There is no heaven; it's a fairy story' Planet Gallifrey. 0dechet site de dons d'objets, donner, chercher, récupérer des objets gratuit. Promethean Planet - Interactive Teacher Community, Interactive Whiteboard Lessons and Resources, Online Lesson Plans, Teaching Resources. Current position of the ISS. Sur les épaules de Darwin. Space Nuclear Weapon Test. Averted Imagination.
Your Age on Other Worlds. Eyes on the Solar System: Intro. Exobiology.wikispaces. The Saturn Return Project. Com feature. SETI Astronomers Launch New Campaign to Eavesdrop on E.T. Kino - Stargate Wiki. Concept ships. We Choose the Moon: Pre-launch. Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets, Telescopes. Телескоп Хаббл 22 года на орбите. Hires.jpg (JPEG Image, 4000x3127 pixels) Zoom: un viaje alucinante al Sol. Earth View. NASA discovers portals (but don’t book your ticket yet) Watch online as huge asteroid hurtles past Earth tonight.
The Carl Sagan Portal. The Aurora. Solar System Visualizer. Invisible Universe. NOVA. How To Land On Mars on Devour. NASA TV.