اخبار نجومی انگلیسی هفت آسمان

عناوین یادداشت‌ها

  • Super-Size Me: Black Hole Bigger Than Previously Thought شنبه 23 خرداد‌ماه سال 1388 17:19
    Using a new computer model , astronomers have determined that the black hole in the center of the M87 galaxy is at least twice as big as previously thought. Weighing in at 6.4 billion times the Sun ’s mass, it is the most massive black hole yet measured, and this new model suggest that the accepted black hole masses...
  • Astronomers Find New Way to Measure Cosmic Distances شنبه 23 خرداد‌ماه سال 1388 17:17
    Using a rare type of giant Cepheid variable stars as cosmic milemarkers, astronomers have found a way to measure distances to objects three times farther away in space than previously possible. Classical Cepheids are stars that pulse in brightness and have long been used as reference points for measuring distances in...
  • Podcast: Large Scale Structures in the Universe شنبه 23 خرداد‌ماه سال 1388 17:13
    We’re thinking big. We’re going to consider the biggest things in the Universe. If you could pull way back, and examine regions of space billions of light-years across, what would you see? How is the Universe arranged at the largest scale? And more importantly… why? Click here to download the episode. Or subscribe to:...
  • Podcast: Questions Show: Hidden Fusion, the Speed of Neutrinos a شنبه 23 خرداد‌ماه سال 1388 17:12
    Are new stars dark until their photons reach the surface? How fast do neutrinos travel? And what’s the story with Hawking Radiation ? If you’ve got a question for the Astronomy Cast team, please email it in to info@astronomycast.com and we’ll try to tackle it for a future show. Please include your location and a way...
  • Podcast: Questions Show: An Unlocked Moon, Energy into Black Hol شنبه 23 خرداد‌ماه سال 1388 17:11
    What would happen if the Moon wasn’t tidally locked to the Earth ? What happens to all that mass and energy disappearing into a black hole ? And how can we explain the space station’s crazy orbit? If you’ve got a question for the Astronomy Cast team, please email it in to info@astronomycast.com and we’ll try to tackle...
  • No Nature VS. Nurture for Stars شنبه 23 خرداد‌ماه سال 1388 17:10
    Stars don’t seem to mind where they grow up. Either in a nice quiet neighborhood or in the hellish environment near a supermassive black hole , astronomers were surprised to find the same proportions of low- and high-mass young stars in different types of star forming regions. Using the Very Large Telescope ,...
  • What If There Is Only One Universe? شنبه 23 خرداد‌ماه سال 1388 17:09
    When it comes to universes, perhaps one is enough after all. Many theories in physics and cosmology require the existence of alternate, or parallel, universes. But Dr. Lee Smolin of the Perimeter Institute for Theoretical Physics in Waterloo, Canada , explains the flaws of theories that suggest our universe is just...
  • NASA Science News for June 9, 2009 شنبه 23 خرداد‌ماه سال 1388 17:07
    There's an email going around claiming that Mars will look as big as a full Moon on August 27th. Could this possibly be true? Find out in today's story from Science@NASA: http://science.nasa.gov/headlines/y2009/09jun_marshoax.htm?list1035898
  • NASA Science News for June 3, 2009 شنبه 23 خرداد‌ماه سال 1388 17:06
    Researchers are about to subject a fake astronaut complete with blood cells and simulated human tissue to an artificial solar flare . How the unlucky volunteer emerges from the radiation storm will reveal for the first time how much of a threat severe solar flares pose to astronauts en route to the Moon and Mars. FULL...
  • NASA Science News for May 29, 2009 چهارشنبه 13 خرداد‌ماه سال 1388 19:12
    An international panel of experts has issued a new prediction for the solar cycle which takes into account the surprisingly deep solar minimum of 2008-2009. Read today's story to find out when they think solar maximum will return. FULL STORY at...
  • Spaceships on the Move چهارشنبه 13 خرداد‌ماه سال 1388 19:09
    ! Atlantis hitches a ride on a 747 back to KSC. Credit: NASA TV Atlantis has begun her journey back home to the Kennedy Space Center, hitching a ride on the Shuttle Carrier Aircraft, a modified Boeing 747. The flight took off at about 11:05 EDT on Monday morning from Edwards Air Force Base, and the duo will fly to...
  • The Truth About NASA’s UFO Videos چهارشنبه 13 خرداد‌ماه سال 1388 19:07
    Image from the STS-80 shuttle mission. Taken from: AboveTopSecret Perusing You Tube , there are lots of UFO videos, which are usually grainy, shaky videos showing nothing that can be proved definitively. But there are a couple of videos that are different — and have generated a lot of interest — because they were...
  • Capture the Universe with Phil Plait چهارشنبه 13 خرداد‌ماه سال 1388 19:06
    So, you think you’re a great astrophotographer? Then this is for you: the Bad Astronomer announced today he is hosting an astrophotography contest, sponsored by Discover Magazine and Celestron Telescopes . Phil himself will be the judge, so all you need to do is figure out what images he really likes and then get...
  • Have Astronomers Discovered A New Type of Supernova? چهارشنبه 13 خرداد‌ماه سال 1388 19:05
    The sudden appearance of the transient "mystery object" SCP 06F6 in Hubble's field of view. The lower image quadrant represents a zoomed in view. A team of astronomers at the University of Warwick think they’ve finally explained what caused the bizarre transient object SCP 06F6. By comparing the optical...
  • Carnival of Space #105 چهارشنبه 13 خرداد‌ماه سال 1388 19:02
    Carnival 105. Credit: Ian O'Neill This week’s Carnival of Space is hosted by Ian O’Neill over at Discovery Space. Yes, Ian is at the Space Disco — if you’re confused, read this. Click here to read the Carnival of Space #105 And if you’re interested in looking back, here’s an archive t o all the past carnivals of...
  • A Top-Secret Explosion in M82 چهارشنبه 13 خرداد‌ماه سال 1388 19:01
    M82. The VLA image (top left) clearly shows the supernova (SN 2008iz). Credit: MPIfR Supernovae are extremely luminous explosions of stars and cause bursts of radiation that often outshine an entire galaxy . So, when a supernova exploded last year in a nearby galaxy, why didn’t we see it? Was this an undercover...
  • Mars Rover Has a New Name چهارشنبه 13 خرداد‌ماه سال 1388 18:57
    Artist concept of MSL. Credit: JPL The Mars Science Laboratory rover, scheduled for launch in 2011, now has a new name, thanks to a sixth-grade student from Kansas. Twelve-year-old Clara Ma submitted the winning entry, “Curiosity” in the name-the-rover contest for schoolchildren, sponsored by NASA. “We have been eager...
  • Distant black hole poses for a close-up چهارشنبه 13 خرداد‌ماه سال 1388 18:56
    1H0707-495 Astronomers have probed closer than ever to a supermassive black hole lying deep at the core of a distant active galaxy that was once thought to be shrouded in dust — which will greatly advance the look captured in this NASA file image from the mid-1990s. Using new data from ESA’s X-ray Multi- Mirror...
  • Where In The Universe #56 چهارشنبه 13 خرداد‌ماه سال 1388 18:55
    It’s Wednesday (already?!) so that means its time for another “Where In The Universe ” challenge to test your visual knowledge of the cosmos. This week’s image was submitted by UT reader Rob Bowman, and Rob is hoping to stump everyone this week. Try to guess/name where in the Universe this image is from, and give...
  • UT Briefs: Shuttle Lands, Re-living Phoenix چهارشنبه 13 خرداد‌ماه سال 1388 18:52
    Atlantis touches down in California. Credit: NASA Space Shuttle Lands Space shuttle Atlantis landed safely in California on Sunday morning after “dynamic and unpredictable” weather kept the orbiter from returning to Florida. Atlantis touched down on runway 22 of Edwards Air Force Base at 11:39 am EDT (1539 GMT)...
  • Bolden Nominated as NASA Administrator; Shuttle Landing Delayed چهارشنبه 13 خرداد‌ماه سال 1388 18:51
    Obama and a White House Aide met with Charles Bolden on May 19. Official White House photo by Pete Souza . About the same time space shuttle Atlantis’ landing was waved off today due to continued rainy weather in Florida , the White House announced that former shuttle commander Charles Bolden Jr. will be nominated as...
  • Opportunity Reveals Long-time Water, Winds at Victoria چهارشنبه 13 خرداد‌ماه سال 1388 18:49
    A sizable collaboration of researchers has unveiled an enormous set of data from NASA’s Opportunity rover today — data that testify to the rover’s lucky longevity, and paint a picture of climate events that have shaped Victoria Crater, shown in this NASA/JPL-Caltech image. The climate history is vast and compelling,...
  • New, Deep Image of Virgo Cluster Reveals Galaxy Cut Short in its پنج‌شنبه 31 اردیبهشت‌ماه سال 1388 18:07
    Astronomers have peered deep inside the Virgo cluster, and measured the size of one of its most famous members — Messier 87 — with surprising results. The giant elliptical galaxy isn’t quite as giant as previously believed. This deep image of the Virgo Cluster , obtained by Chris Mihos of Case Western Reserve...
  • A Cold and Wet History on Early Mars? پنج‌شنبه 31 اردیبهشت‌ماه سال 1388 18:06
    Even if an early Mars never got above freezing, the brine on its surface could have stayed liquid and supported life, a new study says. Lead author Alberto G. Fairen, of NASA Ames Research Center in Moffett Field, California, and his colleagues have analyzed the behavior of Martian chemical concentrations found at...
  • Where In The Universe #55 پنج‌شنبه 31 اردیبهشت‌ماه سال 1388 18:05
    Are you ready for another Where In The Universe Challenge? Take a look and see if you can name where in the Universe this image is from. Give yourself extra points if you can name the spacecraft responsible for the image. As usual, we’ll provide the image today, but won’t reveal the answer until tomorrow. This gives...
  • IYA Live Telescope Today: Jupiter and Neptune Conjunction - M19 پنج‌شنبه 31 اردیبهشت‌ماه سال 1388 18:04
    Hey, hey! We’re baaaack… Due to some technical difficulties, our eye on the southern sky has been down for a short time, but I’m happy to report that we’re back up and running again. If you missed our broadcast yesterday and today, have no fear. We recorded the Jupiter and Neptune conjunction for you and captured...
  • Herschel Phones Home — Literally پنج‌شنبه 31 اردیبهشت‌ماه سال 1388 18:02
    ESA's 35-metre deep-space ground station at New Norcia, Australia. Credit: ESA For the first time in spaceflight history, a satellite has used mobile phone technology to radio back to Earth . The Herschel spacecraft – which launched on May 14, called home two days later using the same technology used in GSM mobile...
  • Cosmologists Improve on Standard Candles Measurement پنج‌شنبه 31 اردیبهشت‌ماه سال 1388 18:01
    The warm colors in this diagram stand for strong correlations of the brightness ratios between two wavelengths and a Type Ia supernova's absolute magnitude . Credit: Nearby Supernova Factory Cosmologists have found a new and quicker technique that establishes the intrinsic brightness of Type Ia supernovae more...
  • Poetry in Space: Final Pilgrims to the Hubble Space Telescope پنج‌شنبه 31 اردیبهشت‌ماه سال 1388 17:59
    As today’s final spacewalk of the Hubble Servicing Mission begins, it seems very fitting to share a poem written by my friend Stuart Atkinson. Stuart is a poet, a blogger, a member of Unmanned Spaceflight.com (which means he is a Photoshopper extraordinaire!) and a passionate promoter of space exploration . Stuart has...
  • 3 new stories for 2009/05/19 پنج‌شنبه 31 اردیبهشت‌ماه سال 1388 17:57
    Wave clouds . Credit: Andrew Heymsfield A team of atmospheric chemists has moved closer to what’s considered the “holy grail” of climate change science: the first-ever direct detections of biological particles within ice clouds. Ice in Clouds Experiment - Layer Clouds (ICE-L) team mounted a mass spectrometer onto a...