单词 | heliopause |
例句 | That place, called the heliopause, is one definition of the outer boundary of the Empire of the Sun. Cosmos 1980-01-01T00:00:00Z In 2012 and 2019, NASA’s Voyager 1 and 2 spacecraft respectively broke through the heliopause, the boundary at which our sun’s sphere of influence gives way to the interstellar medium. NASA’s Pluto Spacecraft Begins New Mission at the Solar System’s Edge 2022-12-21T05:00:00Z The solar wind would run farther before sputtering to a stop at the heliopause, where the hot, wispy plasma of our heliosphere gives way to the cold, dense plasma of interstellar space. ‘Voyager on steroids.’ Mission would probe mysterious region beyond our Solar System 2022-07-27T04:00:00Z Both probes have, in the past decade, entered “interstellar space” after breaching the heliopause. NASA to shut down Voyager probe systems in an attempt to keep them going through 2030 2022-06-21T04:00:00Z Before the Voyagers' journeys, estimates of the distance to that boundary with interstellar space, known as the heliopause, varied wildly. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z The heliopause is the barrier separating the Sun's solar winds from the interstellar medium, or all of the matter and radiation that exist in the space in-between various solar systems in the galaxy. Humanity's most distant spacecraft is sending back weird signals from beyond our solar system 2022-05-23T04:00:00Z The hope, however, is that the spacecraft will remain operational and funded into the 2040s, when it should have reached the heliopause some 120 AU from Earth. NASA’s Pluto Spacecraft Begins New Mission at the Solar System’s Edge 2022-12-21T05:00:00Z Crossing the heliopause, Voyager 1 should have observed a change in the direction of the magnetic field, as the solar wind’s twisting field gives way to differently oriented interstellar fields. ‘Voyager on steroids.’ Mission would probe mysterious region beyond our Solar System 2022-07-27T04:00:00Z In 2012, Voyager 1 passed the heliopause — the boundary where the Sun’s solar wind ends and the interstellar medium begins. NASA engineers trying to figure out strange readings from aging interstellar spacecraft 2022-05-20T04:00:00Z One early guesstimate located the heliopause as close as Jupiter. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z By traveling beyond the heliopause, Interstellar Probe could more clearly see and study the remote remnants of this ancient explosion. U.S. and Chinese Scientists Propose Bold New Missions beyond the Solar System 2022-01-06T05:00:00Z This stopping boundary, called the heliopause, is still about 1,000 times smaller than the extent of the Oort cloud. Was the Interstellar Object 'Oumuamua a Nitrogen Iceberg? 2021-03-19T04:00:00Z “The great circle in the sky,” as Brandt calls it, may be a region just beyond the heliopause where ions snared in a magnetic field spawn ENAs. ‘Voyager on steroids.’ Mission would probe mysterious region beyond our Solar System 2022-07-27T04:00:00Z Outside the heliopause, the territory remains mostly uncharted. Proposed Interstellar Mission Reaches for the Stars, One Generation at a Time 2019-11-12T05:00:00Z The mission's funding had been extended on the expectation that the spacecraft would cross the heliopause at about 50 AU. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z The boundary between the two regions is known as the heliopause. Voyagers shed light on Solar System's structure 2019-11-04T05:00:00Z Voyager 2’s scientific instruments detected abrupt differences in plasma density and magnetic particles upon crossing the heliopause, the researchers said. NASA probe provides insight on solar system's border with interstellar space 2019-11-04T05:00:00Z Taken together, these data showed the spacecraft had passed beyond a boundary of our sun’s influence known as the heliopause—loosely defined as the point at which interstellar space begins. Voyager 2 Makes an Unexpectedly Clean Break from the Solar System 2019-11-04T05:00:00Z Only two spacecraft have reached that zone and lived to tell the tale: the twin Voyager probes, which launched in 1977 and took more than 35 years to reach the heliopause. Interstellar Probe, a mission concept for NASA, aims to travel 93 billion miles past the sun 2019-07-11T04:00:00Z Almost 20 years passed before one of the Voyagers finally made it to the heliopause. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z The heliopause is the region at which the solar wind’s outward expansion is countered by the influence of incoming interstellar particles. Voyager 2 Spacecraft Enters Interstellar Space 2018-12-10T05:00:00Z The researchers said the heliopause appeared to be much thinner than expected. NASA probe provides insight on solar system's border with interstellar space 2019-11-04T05:00:00Z Voyager 2 isn’t the first spacecraft to pass the heliopause landmark. Voyager 2 becomes second human-made object to cross into interstellar space 2018-12-10T05:00:00Z At that blistering — and admittedly aspirational — pace, it would need little more than a decade to reach the heliopause. Interstellar Probe, a mission concept for NASA, aims to travel 93 billion miles past the sun 2019-07-11T04:00:00Z The tenacity and commitment of that band of brothers and sisters were rewarded on August 25, 2012, when Voyager 1 finally crossed the heliopause. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z It is possible that in coming years, as the sun reaches the peak of its roughly 11-year activity cycle, its outbursts could push the heliopause farther out again, perhaps even beyond Voyager 2. Voyager 2 Spacecraft Enters Interstellar Space 2018-12-10T05:00:00Z It will likely cross a boundary called the heliopause in another several years, exiting the sun’s protective plasma bubble to travel in interstellar space. Voyager at 40: Where Will the NASA Spacecraft Go Next? 2017-09-06T04:00:00Z Voyager detected its first cosmic tsunami back in the 1990’s when the impact of a CME colliding with the heliopause created a blast of radio waves. Voyager 1 is Rocked By a Solar Storm 2014-12-17T05:00:00Z Charged particles flowing from the sun stream out to the edge of the solar system — past the planets, beyond Pluto, through the frozen halo of the Kuiper belt, to a place called the heliopause. Interstellar Probe, a mission concept for NASA, aims to travel 93 billion miles past the sun 2019-07-11T04:00:00Z And the spacecraft added yet another puzzle: it encountered the heliopause at 120 AU from Earth—the same distance marked by its twin six years earlier. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z Now the mission team is confident the spacecraft has joined its predecessor in passing beyond a key boundary called the heliopause and into interstellar space. Voyager 2 Spacecraft Enters Interstellar Space 2018-12-10T05:00:00Z That transition point is known as the heliopause—but it’s not a clean line like an earthly border. Top 10 Space Moments 2013-12-08T01:50:20Z By 2012, the spacecraft was close enough to the heliopause to experience a later tsunami directly, recording a steep increase in the density of the gas it was flying through. Voyager 1 is Rocked By a Solar Storm 2014-12-17T05:00:00Z The catalyst that spurred NASA’s announcement was a paper published in the journal Science, documenting Voyager 1’s successful journey through our solar system’s heliopause. NASA's Voyager 1 Mission Far From Over 2013-09-29T09:44:00Z Voyager 2 arrived when the solar wind was peaking, which, if the models were correct, should have pushed the heliopause farther out than 120 AU. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z These events can affect the heliosphere much like gas pumped into a balloon, causing it to grow—conversely, when their numbers decrease the heliosphere can shrink, changing the location of the heliopause. Voyager 2 Spacecraft Enters Interstellar Space 2018-12-10T05:00:00Z “Fifty years ago,” says Gurnett, “when the idea of the heliopause was first proposed, some people though it was just beyond Jupiter.” Adios, Voyager 1 2013-09-12T20:05:22Z The heliopause—the boundary between the local heliosphere and the interstellar medium beyond—is a boundary not only of particles but of magnetic fields as well. Voyager 1 Returns Surprising Data about an Unexplored Region of Deep Space 2013-06-27T19:15:08.627Z As he notes, at the spacecraft’s current position beyond the heliopause, there currently is something like only one particle per cubic kilometer. NASA's Voyager 1 Mission Far From Over 2013-09-29T09:44:00Z The Voyagers' data show little field variation at large scales but many small-scale fluctuations around the heliopause, caused by the heliosphere's influence on the interstellar medium. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z The problem is, much as with the heliopause, that this may not always be at the same distance from the Sun. Voyager's Exit To The Stars...In 17,000 Years 2013-04-08T16:15:28.010Z The place where the Sun’s particles dominate is known as the heliosphere, but the boundary region between heliosphere and interstellar space—a region known as the heliopause—is a turbulent and complex place. Adios, Voyager 1 2013-09-12T20:05:22Z Why should we expect an advanced intelligence to be couch potatoes, content never to push the envelope across their own heliopause? 5 Reasons E.T. Would Already Know We're Here 2013-02-28T11:34:59Z Thirty years ago, the idea was that the heliopause might lie just beyond the orbit of Jupiter, says Gurnett. NASA's Voyager 1 Mission Far From Over 2013-09-29T09:44:00Z “But we did achieve something really amazing. It could have been that we never got to the heliopause, but we did.” Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z Regions of denser interstellar atmosphere, or medium, are expected to drastically shrink the size of the Sun’s bubble, bringing the heliopause in close. Voyager's Exit To The Stars...In 17,000 Years 2013-04-08T16:15:28.010Z For years Voyager 1 has been closing in on the heliopause—the outer edge of the heliosphere—where the solar wind meets the interstellar medium. Despite Tantalizing Hints, Voyager 1 Has Not Crossed into the Interstellar Medium 2012-12-05T15:16:18.543Z For about a month in July and August, the solar wind came to a dead stop—the threshold known as the heliopause. Voyager 1 Reaches Solar System's Edge 2012-12-05T14:35:00Z By one previous estimate, the heliopause could be just ahead of humankind’s most well-traveled emissary, or it could lie as many as four billion kilometers beyond—about seven years’ travel time. NASA's Voyager 1 Spacecraft May Not Be Near Edge of Solar System After All 2012-09-05T20:45:10.243Z Two years ago the mission's engineers turned off the heater for the cosmic-ray detector, which had been crucial in determining the heliopause transit. Record-Breaking Voyager Spacecraft Begin to Power Down 2022-06-16T04:00:00Z But if the heliopause, and Voyager 1′s present location just within it, is not the edge of the solar system, where does the solar system actually end? Voyager's Exit To The Stars...In 17,000 Years 2013-04-08T16:15:28.010Z Still, no one knows how much farther Voyager 1 may have to travel before it breaches the heliopause and enters the interstellar medium. Despite Tantalizing Hints, Voyager 1 Has Not Crossed into the Interstellar Medium 2012-12-05T15:16:18.543Z By now, scientists expected Voyager 1 to have reached the heliopause – the boundary between the solar system and the rest of space. Voyager: a binary love story 2012-09-05T19:45:06.073Z Decker and his colleagues conclude from the plasma measurements “that Voyager 1 is not at present close to the heliopause, at least in the form that it has been envisioned up to now.” NASA's Voyager 1 Spacecraft May Not Be Near Edge of Solar System After All 2012-09-05T20:45:10.243Z Detecting and characterizing this threshold — called the heliopause — would be the ultimate bonus for a probe that logged its 35th year in space on 5 September. Voyager’s long goodbye 2012-09-05T17:20:30.527Z It is anticipated, however, that the craft will cross the boundary within the next few months or years, reaching the heliopause roughly 10 years after crossing the Termination Shock, which it did in 2004. Voyager 1 turns 35: A story of interstellar travel, romance and a Golden Record 2012-09-04T17:14:39Z The edge of the heliosphere, where it collides with interstellar gas and dust, is called the heliopause, and marks the outer limit of the solar system. Our Sun Moves More Slowly Than Thought 2012-05-11T14:45:00.217Z The heliopause was expected to be a rather sharp boundary between the sun’s domain and interstellar space. Voyager 1 May Have Reached The Heliopause 2011-06-21T00:45:00.277Z At some unknown point they'll cross the heliopause, defined as the final limit of the Solar System. To boldly go 2011-06-10T07:12:59Z It is at this boundary - the heliopause - where the Voyagers find themselves today, and where the Sun's magnetic field lines are snapping and reconnecting to produce the structures reported by scientists. Voyagers ride 'magnetic bubbles' 2011-06-09T22:11:24Z Voyager 1 is racing on towards the heliopause at 17km/s. Voyager near Solar System's edge 2010-12-14T04:43:17Z The boundary between the two is the "official" edge of the Solar System - the heliopause. Voyager near Solar System's edge 2010-12-14T04:43:17Z And it should be close to the heliopause, where the plasma flowing outward from the sun no longer holds back the interstellar winds. Voyager 1 May Have Reached The Heliopause 2011-06-21T00:45:00.277Z |
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