Free Republic 1st Qtr 2021 Fundraising Target: $88,000 Receipts & Pledges to-date: $34,332
39%  
Woo hoo!! And the first 39% is in!! Thank you all very much!! God bless.

Keyword: asteroids

Brevity: Headers | « Text »
  • A sign of doom? Six asteroids make ‘close approach’ to Earth on Biden’s inauguration day

    01/20/2021 12:58:54 PM PST · by Roman_War_Criminal · 24 replies
    ss ^ | 1/20/21 | SS
    Joe Biden’s reign as US president is due to get off to a rocky start – a barrage of asteroids are set to make “close approaches” to our planet as the Democrat takes the oath of office on Wednesday. NASA has identified six asteroids that will blaze past Earth on inauguration day. The space agency labelled the plethora of space rocks as Near Earth Objects (NEOs), meaning they warrant close scrutiny. “NEOs are comets and asteroids that have been nudged by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth’s neighbourhood,” NASA’s Jet Propulsion...
  • An Asteroid Made a Record Close Pass of Earth on Friday 13, And We Didn't See It Coming [250 MILES!]

    11/18/2020 8:50:29 AM PST · by Red Badger · 35 replies
    https://www.sciencealert.com ^ | DAVID DICKINSON, UNIVERSE TODAY, 18 NOVEMBER 2020
    Wow. A low-flying space rock set a record last Friday (appropriately, the 13th), when 2020 VT4 passed just under 400 kilometers (250 miles) over the Southern Pacific. The asteroid was spotted by the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey at the Mauna Loa Observatory in Hawaii in the early morning hours of Saturday, November 14, just 15 hours after approach. This is not uncommon for fast-movers, especially asteroids that are coming at the Earth from our sunward blind-spot, like 2020 VT4. Newly-discovered asteroid A10sHcN approached Earth yesterday, passing only a few hundred miles above the South Pacific Ocean. This...
  • An Asteroid Trailing After Mars Could Actually Be The Stolen Twin of Our Moon

    11/04/2020 9:13:00 AM PST · by Red Badger · 17 replies
    https://www.sciencealert.com ^ | 4 NOVEMBER 2020 | PETER DOCKRILL
    The South Pole of the Moon. (NASA GSFC Scientific Visualisation Studio) =========================================================================== A distant asteroid trailing in the gravitational wake of Mars has been observed in greater detail than ever before, and the close-up reveals a surprising resemblance – one that raises some interesting questions about the object's ancient origins. The asteroid in question, called (101429) 1998 VF31, is part of a group of trojan asteroids sharing the orbit of Mars. Trojans are celestial bodies that fall into gravitationally balanced regions of space in the vicinity of other planets, located 60 degrees in front of and behind the planet. Most...
  • Cometary Activity Spotted on Distant Centaur

    10/29/2020 5:34:55 PM PDT · by BenLurkin · 23 replies
    Sci-News ^ | 10/29/2020
    Centaurs are minor planets thought to have originated in the outer region of our Solar System known as the Kuiper Belt. Active centaurs enigmatically display prominent comet-like features such as comae or tails even though they orbit in the gas giant region where it is too cold for water to readily sublimate. Only 18 active centaurs have been identified since 1927 and, consequently, the underlying activity mechanisms are still poorly understood. 2014 OG392 orbits between 10 and 15 AU (astronomical units) where its equilibrium temperature would be around minus 213 degrees Celsius (minus 351 degrees Fahrenheit). Chandler and colleagues initially...
  • A Rare Hybrid of a Comet And an Asteroid Is Showing Off Its Cometary Traits

    11/02/2020 11:11:00 AM PST · by Red Badger · 4 replies
    www.sciencealert.com ^ | 1 NOVEMBER 2020 | DAVID NIELD
    This image highlights the bright coma of C/2014 OG392 (PANSTARRS). (Northern Arizona University ======================================================================= Centaurs are rare celestial objects that can combine some of the different features of asteroids and comets. They're basically rocky in nature, like asteroids, but can also throw out clouds of dust and gas as their exteriors vaporize, like comets. When centaurs emit these gases, they're considered active. We've only ever found 18 chemically active centaurs in the last century or so, but now a new one has been added to the list – and it might be able to tell us more about how these...
  • Asteroid Apophis Could Still Hit Earth in 2068, New Measurements Suggest

    10/28/2020 6:09:01 AM PDT · by MtnClimber · 50 replies
    Gizmodo ^ | 27 Oct, 2020 | George Dvorsky
    Only a small handful of objects are known to pose a serious threat to Earth, and the gigantic asteroid Apophis is one of them. Scientists are now re-evaluating its potential to strike our planet in 48 years, owing to improved observations of the problematic asteroid. Observations made earlier this year from the Subaru Telescope in Hawai’i are providing astronomers with a better sense of how the Yarkovsky effect is influencing the orbital path of asteroid 99942 Apophis. This effect is like a built-in propulsion system for asteroids, in which trace amounts of leaking radiation can alter an object’s momentum in...
  • Metal Asteroid Hurtling Through Space Could Wipe Out...U.S. Debt!

    08/31/2019 9:57:10 AM PDT · by infool7 · 84 replies
    Bill Whittle Now ^ | 8/31/2019 | Bill Whittle
    A metal asteroid worth $10,000 quadrillion, hurtling through space, makes construction of a massive orbital space station substantially cheaper. At least one company is already pitching a plan for a Von Braun Gateway Station housing some 1,500 people in orbit. The resources on the single asteroid, 16 Psyche, is not only enough to build the station, but to wipe out the U.S. national debt thousands of times over.
  • Study offers more complete view of massive asteroid Psyche

    10/26/2020 8:20:19 PM PDT · by BenLurkin · 18 replies
    Phys.org ^ | October 26, 2020 | Southwest Research Institute
    The study, which was published today in The Planetary Science Journal and presented at the virtual meeting of the American Astronomical Society's Division for Planetary Sciences, paints a clearer view of the asteroid than was previously available. At about 140 miles in diameter, Psyche is one of the most massive objects in the main asteroid belt orbiting between Mars and Jupiter. Previous observations indicate that Psyche is a dense, largely metallic object thought to be the leftover core of a planet that failed in formation. Becker observed the asteroid at two specific points in its rotation to view both sides...
  • NASA's OSIRIS-REx spacecraft collects significant amount of asteroid

    10/24/2020 2:32:37 AM PDT · by zeestephen · 29 replies
    Science Daily ^ | 23 October 2020
    Two days after touching down on asteroid Bennu, NASA's OSIRIS-REx mission team received on Thursday, Oct. 22, images that confirm the spacecraft has collected more than enough material to meet one of its main mission requirements -- acquiring at least 2 ounces (60 grams) of the asteroid's surface material.
  • Strange Election “Coincidences”: 1 Blue Moon, 2 Asteroids And 3 Simultaneous Lightning Strikes

    10/23/2020 12:51:19 PM PDT · by Roman_War_Criminal · 15 replies
    eotad ^ | 10/22/20 | Michael Snyder
    This has already been one of the most bizarre presidential election seasons in U.S. history, and it gets stranger with each passing day. So it seems appropriate that nature is getting into the act as well. Some very unusual natural events are happening, and many are speculating that some or all of them may have some sort of deeper meaning. For example, there will be a “blue moon” on the Saturday before the election, and of course Halloween just also happens to fall on that particular Saturday. The following comes from the Jerusalem Post… The events of 2020 have been...
  • Astronomy Picture of the Day - Tagging Bennu

    10/22/2020 3:54:10 PM PDT · by MtnClimber · 12 replies
    APOD.NASA.gov ^ | 22 Oct, 2020 | Image Credit: OSIRIS-REx, University of Arizona, NASA, Goddard Scientific Visualization Studio
    Make sure to go to the link and click on the hotlink highlighted as "Touch-And-Go (TAG) sampling event" for a video of the touchdown. A photo sequence is also shown in the last hotlink in the Explanation or by clicking on the image at the link. Explanation: On October 20, after a careful approach to the boulder-strewn surface, the OSIRIS-REx spacecraft's arm reached out and touched asteroid Bennu. Dubbed a Touch-And-Go (TAG) sampling event, the 30 centimeter wide sampling head (TAGSAM) appears to crush some of the rocks in this snapshot. The close-up scene was recorded by the spacecraft's SamCam...
  • Here It Is: The Spectacular Footage of NASA Touching Down on an Asteroid

    10/22/2020 8:35:11 AM PDT · by Red Badger · 26 replies
    www.sciencealert.com ^ | 22 OCTOBER 2020 | MICHELLE STARR
    Want a little reminder of how amazingly clever we humans can be? Yesterday, from a distance of more than 320 million kilometres (200 million miles) away, NASA scientists piloted a spacecraft to gently touch down on a spinning asteroid, collecting a sample of surface rubble to bring back home to Earth. At 6:08 PM EDT, the signal from spacecraft OSIRIS-REx reached Earth to let us know that it had successfully touched down at the Nightingale collection site on asteroid Bennu, within a metre (three feet) of its target, and safely bounced back up again after just 6 seconds of contact....
  • A NASA Spacecraft Is About to Land on an Asteroid And Grab a Sample.

    10/20/2020 10:13:42 AM PDT · by Red Badger · 38 replies
    www.sciencealert.com ^ | 20 OCTOBER 2020 | ELIZABETH CANTWELL, THE CONVERSATION
    Imagine parallel parking a 15-passenger van into just two to three parking spaces surrounded by two-story boulders. On October 20, a University of Arizona-led NASA mission 16 years in the making will attempt the astronomical equivalent more than 200 million miles (320 million kilometres) away. A NASA mission called OSIRIS-REx will soon attempt to touch the surface of an asteroid and collect loose rubble. OSIRIS-REx is the United States' first asteroid sample return mission, aiming to collect and carry a pristine, unaltered sample from an asteroid back to Earth for scientific study. The spacecraft will attempt to touch the surface...
  • October Meteor Showers

    10/05/2020 8:12:17 AM PDT · by Pete from Shawnee Mission · 24 replies
    "Meteor Shower Tonight" ^ | October 1, 2020 | Staff
    "There are 11 meteor showers peaking in October every year. Here the brief description of these awesome space events that will light up the autumn sky of October. Keep your eyes to the sky and enjoy!"
  • Astronomy Picture of the Day - Descending Toward Asteroid Bennu

    10/12/2020 4:42:47 PM PDT · by MtnClimber · 28 replies
    APOD.NASA.gov ^ | 12 Oct, 2020 | Video Credit: NASA, OSIRIS-REx, NASA's Scientific Visualization Studio; Data: NASA, U. Arizona, CSA,
    Explanation: What would it be like to land on an asteroid? Although no human has yet done it, NASA's robotic OSIRIS-REx spacecraft is scheduled to attempt to touch the surface of asteroid 101955 Bennu next week. The goal is to collect a sample from the nearby minor planet for return to Earth for a detailed analysis in 2023. The featured video shows what it looks like to descend toward the 500-meter diamond-shaped asteroid, based on a digital map of Bennu's rocky surface constructed from image and surface data taken by OSIRIS-REx over the past 1.5 years. The video begins by...
  • OSIRIS-REx readies for sample collection, observes strange activity at asteroid Bennu

    10/01/2020 5:58:00 PM PDT · by amorphous · 7 replies
    NASA Spaceflight.Com ^ | 29 September 2020 | Chris Gebhardt
    OSIRIS-REx — an international sample-return mission led by NASA and joined by science team members from Canada, France, Germany, the United Kingdom, and Italy, and with an instrument provided through the Canadian Space Agency — is less than one month away from performing a Touch-And-Go sample collection maneuver to return portions of asteroid Bennu to Earth. Meanwhile, science teams have observed regular material shedding activity from the near Earth object — an unexpected find that allows scientists to better understand the dynamic little worlds littered throughout the inner solar system.
  • RV-size asteroid to get closer to Earth than the moon

    09/22/2020 6:54:35 PM PDT · by BenLurkin · 46 replies
    live Science ^ | 09/22/2020 | Laura Geggel
    Scientists have yet to pin down the asteroid's exact size, but it's not that large, likely between 14 feet and 32 feet (4.4 and 9.9 meters) long, according to CNEOS. This potentially RV-size asteroid was discovered only last week, on Sept. 18, by the Mount Lemmon Survey in Arizona, and announced the next day by the Minor Planet Center, a NASA-funded group that monitors minor planets, comets and natural satellites. (It's not unusual to find unknown asteroids; in September alone, the Minor Planet Center has announced the discovery of 244 near-Earth objects.) Passing by Earth will actually be a life-changing...
  • Astronomy Picture of the Day - Gravel Ejected from Asteroid Bennu

    09/16/2020 5:54:43 PM PDT · by MtnClimber · 15 replies
    APOD.NASA.gov ^ | 16 Sep, 2020 | Image Credit: NASA's GSFC, U. Arizona, OSIRIS-REx Lockheed Martin
    Explanation: Why does asteroid Bennu eject gravel into space? No one is sure. The discovery, occurring during several episodes by NASA's visiting OSIRIS-REx spacecraft, was unexpected. Leading ejection hypotheses include impacts by Sun-orbiting meteoroids, sudden thermal fractures of internal structures, and the sudden release of a water vapor jet. The featured two-image composite shows an ejection event that occurred in early 2019, with sun-reflecting ejecta seen on the right. Data and simulations show that large gravel typically falls right back to the rotating 500-meter asteroid, while smaller rocks skip around the surface, and the smallest rocks completely escape the low...
  • Where no spacecraft has gone before: A close encounter with binary asteroids

    09/11/2020 10:33:45 PM PDT · by BenLurkin · 12 replies
    phys.org ^ | September 10, 2020
    CU Boulder and Lockheed Martin will lead a new space mission to capture the first-ever closeup look at a mysterious class of solar system objects: binary asteroids. In 2022, the Janus team will launch two identical spacecraft that will travel millions of miles to individually fly close to two pair of binary asteroids. Their observations could open up a new window into how these diverse bodies evolve and even burst apart over time, said Daniel Scheeres, the principle investigator for Janus. The mission, which will cost less than $55 million under NASA's SIMPLEx program, may also help to usher in...
  • Near-miss Asteroid 2020 QL2 as big as football pitch to fly past Earth on Monday

    09/11/2020 10:20:58 PM PDT · by BenLurkin · 10 replies
    birminghammail.co.uk ^ | 05:30, 12 SEP 2020 | Dvid Bentley
    Among recent 'near-Earth objects' it's one of the biggest but won't be as terrifying close as the rock that flew past less than 2,000 miles from us in August An asteroid the size of a football pitch is to whizz past planet Earth on Monday, September 14. The giant chunk of rock, named Asteroid 2020 QL2, is up to 120 metres in diameter. It's among the 'near Earth objects' being documented and observed by astronomers. NASA's Centre for Near-Earth Object Studies (CNEOS) says QL2 will fly past at a speed of nearly 24,000 mph and come within a distance of...