On the other hand, according to Einstein's theory of general relativity, pulsar's behavior under an external gravitational field should not be different from that of any other body within that field, be it a feather or a star.
The team's result is 10 times more precise that the previous best test of gravity, making the evidence for Einstein's Strong Equivalence Principle that much stronger. In 1971, Apollo 15 astronaut David Scott dropped a feather and a hammer simultaneously; the two hit the gray lunar dirt at the same time.
However, it is hard to determine whether the equivalence principle applies in every situations-when the objects which are used are supremely heavy or giant, just like This wiggle room has given some expectations to supports of many other gravity theories, although these kinds of folks remain in the minority.
However, while GR has passed most of these tests, some researchers hypothesize that there are certain situations where alternative theories of gravity could be at play. The new study has nevertheless proved that the principle is true for all cases.
The system in question, known as PSR J0337+1715, is located 4,200 light-years from Earth, in the direction of the constellation Taurus.
Djokovic slams Wimbledon crowd after being booed
Edmund thinks playing the Australian in the warm-up competition will make for great preparation for this afternoon's clash. He also insisted he was unsure whether the ball actually bounced twice on the disputed call in the fourth set.
In the three-star system, the neutron star is in a 1.6-day orbit with one white dwarf, and the second white dwarf orbits this pair with a period of 327 days. White dwarfs are small, dense stars comparable in size to the Earth, but with a mass closer to the Sun. When talking about outer space, we are referring to the 'Strong Equivalence Principle'.
"We can account for every single pulse of the neutron star in PSR J0337+1715 since we began our observations", said team leader Dr. Anne Archibald, from the University of Amsterdam and the Netherlands Institute for Radio Astronomy. "And we can tell its location to within a few hundred meters. That is a really precise track of where the neutron star has been and where it is going".
By tracking the inner pair of stars through the course of several orbits of the outer white dwarf, scientists could measure whether the pulsar and inner white dwarf were affected differently by the gravity of the outer white dwarf. This distortion would cause the pulsar radiation to arrive at a slightly different time than expected.
Yet the researchers did not find out or detect any kind of distortion.
"If there is a difference, it is no more than 3 parts in a million", co-author Nina Gusinskaia, a doctoral student at the University of Amsterdam, said in the same statement. The extreme nature of the observed system has resulted in an even narrower range of theory possibilities than ever before.
"We still don't know if general relativity is correct, but now we know that the right gravitational theory must look even more similar to general relativity that we previously thought".
Researchers were wondering whether the same principles can apply to larger scales of the Universe, like a whole galaxy, and now they have the answer: it does!
A Starbucks employee has been fired after the barista mocked a customer who stuttered while ordering a drink in Philadelphia . Starbucks said Thursday that was not the ideal response, and that it has since apologized to the person directly.
Goalkeeper Danijel Subasic went into extra time with an apparent right leg injury he picked up in the 89thminute. Ivan Rakitic scored the victor from the spot as Russian goalkeeper Igor Akinfeev dived the opposite direction.
Leo Murray, an environmental campaigner behind the balloon stunt, said the protest was meant to play on Trump's psychology. After his comments, Trump attacked Khan, saying he was the one who was "ignorant" and challenging him to an IQ test.
LaVar Ball firmly thinks his son will be the flawless sidekick to the newest Los Angeles Laker , LeBron James . In 59 games last season, Love averaged 17.6 points per game, as well as 9.3 rebounds and 1.7 assists.
He added: "I know too many talented writers that don't always have an outlet or means to get their work seen". The grime artist is now out in Ibiza holding down his #Merky festival at the island's huge Ibiza Rocks venue.
Stephanie Shae Thomas of Trussville tells WVTM-TV in an interview she is a longtime drug addict with bipolar disorder. Store workers paged the woman over a public address system several times but there was no response, he said.
Allen and Young were both called for technical fouls after almost fighting each other in the first half of the exhibition game. He got close to defend the former Oklahoma Sooners star, before Young deployed a ball fake.
Donald Trump is virtually a Fox News contributor, so frequent are his interviews with the Murdoch family's news channel. Several prominent media figures were also quick to point out Shine's checkered history in the public eye.
To be fair to Stroman he didn't try to make any excuses after the loss, while remaining positive despite the disastrous outing. I could give you a long-winded explanation on why this is awesome, but we may as well let the man explain it himself.
But as the group ventured deeper into the vast cave complex that Saturday afternoon, the sky opened up and it began to rain. Earlier efforts to pump out water from the cave have been set back every time there has been a heavy downpour.
But getting the Conservative government to agree with itself after nearly 12 hours of talks at Chequers may be the easy part. As well as potentially hard talks ahead with Brussels, Mrs May also faces the task of winning over Eurosceptic backbenchers.
Croatia end Russia's World Cup dream on penalties
As the more technically able side, it was Croatia who unsurprisingly dominated possession in the opening half hour of the contest. Certainly, every time the ball got into the final third, the whole stadium was willing it to nestle in Danijel Subasic's goal .
Stephen Curry, wife welcome baby boy Canon
Canon is the latest addition to the NBA's cutest family and he couldn't have arrived at a more opportune date. Ayesha and Steph have two daughters: Riley , who is 5-years-old, and 2-year-old Ryan Carson.
Formula One: Hartley unhurt after high speed crash
On top of that, the team faces a fix job to ensure Hartley's auto is ready for qualifying, which starts at 2pm local time. Hartley responded to the question by team engineer when asked if he is okay, saying, "Yep, suspension failure".
Trump Zeros in on Supreme Court Pick
Other judges that have been widely considered to be finalist include Brett Kavanaugh , Raymond Kethledge and Amy Coney Barrett . But, there are plenty of pro-life advocates who see this as a misguided attempt for Democrats and pro-choice Republicans.
Defending champ Garbine Muguruza bundled out at Wimbledon
At Wimbledon, chaos is continuing to wreak havoc through the first two rounds, as remaining top seeds are dropping like flies. Van Uytvanck produced the performance of her career to defeat the third seed 5-7 6-2 6-1 on No.2 Court on Thursday.