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Keyword: arecibo

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  • Arecibo radar returns with asteroid phaethon images

    12/23/2017 8:15:02 AM PST · by BenLurkin · 13 replies
    phys.org ^ | December 22, 2017
    After several months of downtime after Hurricane Maria blew through, the Arecibo Observatory Planetary Radar has returned to normal operation, providing the highest-resolution images to date of near-Earth asteroid 3200 Phaethon during its Dec. 16 flyby of Earth. The radar images, which are subtle at the available resolution, reveal the asteroid is spheroidal in shape and has a large concavity at least several hundred meters in extent near the leading edge, and a conspicuous dark, circular feature near one of the poles. Arecibo's radar images of Phaethon have resolutions as fine as about 250 feet (75 meters) per pixel.
  • Three-mile-wide Asteroid 3200 Phaethon to skim Earth just before Christmas Read more:

    11/24/2017 6:01:48 AM PST · by BenLurkin · 24 replies
    A gigantic space rock called 3200 Phaethon is due to brush ‘quite close’ to our planet on December 17, Russian astronomers have revealed. This huge asteroid is thought to cause the beautiful Geminids meteor shower which will take place between December 13 and 14, causing hundreds of bright meteors to illuminate the night sky as they burn up in Earth’s atmosphere. But NASA has also described it as a ‘potentially hazardous asteroid whose path misses Earth’s orbit by only 2 million miles‘ – which is tiny in galactic terms. It’s about half the size of Chicxulub, the rock which wiped...
  • Researchers Probe Origin of Superpowerful Radio Blasts from Space

    01/10/2018 4:21:23 PM PST · by BenLurkin · 38 replies
    Space.com ^ | January 10, 2018 01:00pm ET | Charles Q. Choi, Contributor |
    New work probes the extraterrestrial source of incredibly powerful explosions of radio waves, investigating why that spot is the only known location to repeatedly burst with these blasts.  These repeating bursts may come from a dense stellar core called a neutron star near an extraordinarily powerful magnetic field, such as one near a massive black hole, the study finds. Fast radio bursts, or FRBs, are intense pulses of radio waves lasting just milliseconds that can give off more energy in a fraction of a second than the sun does in hours, days or weeks. FRBs were discovered only in 2007,...
  • Haunted Again: Skull-Faced 'Halloween Asteroid' Returns in 2018

    12/21/2017 12:52:16 PM PST · by BenLurkin · 4 replies
    Space.com ^ | December 21, 2017 06:52am ET | Mike Wall, Senior Writer |
    Astronomers will soon get another look at the big, ghoulishly weird space rock that buzzed Earth on Halloween three years ago. The roughly 2,100-foot-wide (640 meters) Halloween asteroid 2015 TB145 gave Earth a close shave on Oct. 31, 2015, coming within just 300,000 miles (480,000 kilometers) of our planet. (For perspective, the moon orbits at an average distance of about 239,000 miles, or 384,600 km.) A Halloween flyby was quite appropriate, it turned out: Observations made at the time by a variety of instruments revealed that 2015 TB145 looks like an enormous skull, at least from some angles. ... The asteroid may...
  • Hurricane Maria Damages Parts of Puerto Rico's Arecibo Observatory

    09/23/2017 12:51:52 PM PDT · by LibWhacker · 19 replies
    space.com ^ | 9/22/17 | Hanneke Weitering
    Puerto Rico's iconic Arecibo Observatory has sustained some significant damage from Hurricane Maria, officials reported today (Sept. 22). The storm hit the island as a Category 4 hurricane Wednesday (Sept. 20) and left widespread destruction in its wake. Without power, phones or internet service, the Arecibo Observatory has been offline since the storm hit. The Arecibo Observatory houses the world's second-largest radio telescope. While the overall structure of the telescope is still standing, it sustained some pretty serious damage from Hurricane Maria, according to an update from the Universities Space Research Organization (USRA), which helps to operate the Arecibo Observatory. One telescope operator at Arecibo managed...
  • Arecibo Observatory Remains Offline After Being Buffeted by Hurricane Maria

    09/21/2017 3:15:08 PM PDT · by BenLurkin · 10 replies
    Space.com ^ | September 21, 2017 03:34pm ET | Hanneke Weitering, |
    While the facility has been closed all week for the hurricane, a handful of staff members had remained inside the observatory, waiting for the storm to pass. "Most cell towers and all landlines are down," Aya Collins, a spokeswoman for the National Science Foundation (NSF), told Space.com in an email. With no power, phones or internet, the people of Puerto Rico have very limited means of communication with the outside world. "We haven't received any official communications from the Arecibo Observatory," Collins said. ... USRA update noted that "one observatory staff member located in the town of Arecibo contacted via...
  • Arecibo Observatory, Puerto Rico’s famous telescope, is battered by Hurricane Maria

    09/21/2017 1:41:54 PM PDT · by LibWhacker · 26 replies
    Washington Post ^ | 9/21/17 | Sarah Kaplan
    The National Science Foundation has not heard from staff at the iconic Arecibo Observatory in Puerto Rico since Hurricane Maria roared over the island. A spokeswoman for NSF, which owns the observatory, said the agency hadn't received any official communications from Arecibo since 8 a.m. Wednesday — before the eye of the storm passed over the telescope. Two of the groups that helps manage the observatory, SRI International and the Universities Space Research Association, also hadn't heard from their staff on site. One observatory staff member who weathered the storm in the town of Arecibo contacted the association via shortwave...
  • World's largest radio telescope takes shape, to decode cosmic message

    07/04/2016 9:19:55 AM PDT · by BenLurkin · 25 replies
    Xinhua ^ | | 2016-07-03 21:27:40
    Installation was completed on the world's largest radio telescope on Sunday morning as the last of 4,450 panels was fitted into the center of the big dish. ... In the first two or three years after its completion, the telescope will undergo further adjustment, and during that period Chinese scientists will use it for early-stage research. After that, it will be open to scientists worldwide, said Peng Bo, director of the NAO Radio Astronomy Technology Laboratory. Scientists can also carry out remote control and observation in other cities such as Beijing, more than 2,000 kilometers from the telescope site, said...
  • The mystery signal from a galaxy far away:Brief pulse from deep in outer space baffles astronomers

    01/27/2015 3:32:02 AM PST · by Las Vegas Dave · 30 replies
    dailymail.co.uk ^ | Tuesday, Jan 27th 2015 | Mark Prigg
    Is it a message from far beyond out own galaxy? A brief mysterious pulse detected by Arecibo telescope has baffled boffins. The discovery of a split-second burst of radio waves by scientists using the Arecibo radio telescope in Puerto Rico raises major new questions over what caused it. The finding by an international team of astronomers, published July 10 in The Astrophysical Journal, marks the first time that a so-called 'fast radio burst' has been detected using an instrument other than the Parkes radio telescope in Australia.
  • Historic Space Images From The Arecibo Observatory

    11/01/2013 2:51:24 PM PDT · by SunkenCiv · 7 replies
    Popular Science ^ | November 01, 2013 | Francie Diep
    Happy 50th birthday to the telescope that brought us the first map of Venus, revealed ice on Mercury, and more. When Cornell University built the Arecibo Observatory in Puerto Rico -- near the equator, so it could observe the planets without needing to move its 1,000-foot-wide reflector -- people hadn't even set foot on the moon yet. They wouldn't for another six years. Since its construction, Arecibo has contributed to generations of astronomy. Researchers first set its radar and radio instruments to discover basics, such as the speed of Mercury and Venus' rotations and the surface features of the moon...
  • Asteroid Cruises Past Earth ... With a Partner!

    07/14/2008 5:17:36 PM PDT · by SunkenCiv · 25 replies · 117+ views
    LiveScience ^ | July 13, 2008 | Robert Roy Britt
    A good-sized asteroid sailing past our planet right now turns out to be two giant rocks doing a celestial jig. The setup, catalogued as 2008 BT18, was thought to be nearly a half-mile wide after its discovery by MIT's LINEAR search program in January. Nothing else was known about it. Now seen as two objects orbiting each other, the pair will be closest to Earth on July 14, at about 1.4 million miles (2 million kilometers) away. That's nearly six times as far from us as the moon... Radar observations from the Arecibo Observatory in Puerto Rico on July 6...
  • Getting the intergalactic message across is easier said than done

    11/27/2004 6:25:11 AM PST · by Momaw Nadon · 72 replies · 1,451+ views
    COPLEY NEWS SERVICE ^ | Saturday, November 27, 2004 | Scott LaFee
    Scientists recently decoded the first confirmed alien transmission from outer space. It said: "Please send 5x10 (to the 50th power) atoms of hydrogen to each of the five star systems listed below. Then, add your system to the top of the list and delete the system at the bottom. Transmit copies of this message to 100 different solar systems. If you follow these instructions, you are guaranteed that within 0.25 degrees of a galactic rotation you will receive in return sufficient hydrogen stores to power your own civilization until the universe reaches inevitable maximum entropy. This really works!" OK, it's...
  • Radio search for ET draws a blank

    03/28/2004 8:38:01 AM PST · by Momaw Nadon · 65 replies · 934+ views
    BBC News Online ^ | Thursday, March 25, 2004 | By Dr David Whitehouse
    Astronomers have completed their most sensitive search yet for radio signals from intelligent life in space. They believe the best way to find ET is to look for a radio signal. Such signals can travel vast distances. The Arecibo radio telescope in Puerto Rico, supported by Jodrell Bank, searched over a period of 10 years. The scientists looked at 800 nearby stars with no evidence of a signal from ET. They say they have learned a lot, and plan another search next year. From the ashes The last star scrutinised by Project Phoenix - the most powerful search for intelligent...
  • Astronomy Picture of the Day

    08/16/2002 9:17:07 PM PDT · by sleavelessinseattle · 37 replies · 516+ views
    NASA ^ | 8/17/02 | K. Zwintz, H. Tirado and A. Gomez
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 August 17 Asteroid 2002 NY40 Credit: K. Zwintz (Univ. Viena), H. Tirado and A. Gomez (CTIO, NOAO) Explanation: Asteroid 2002 NY40 will fly by planet Earth early in the morning August 18 Universal Time (late in the evening August 17 Eastern Daylight Time). Approaching to within about 530,000 kilometers or 1.3 times the Earth-Moon distance 2002 NY40 will definitely not be close enough to pose any danger...