WASHINGTON/CAMBRIDGE, Mass.: Scientists for the first time have detected gravitational waves, ripples in space and time hypothesized by Albert Einstein a century ago, in a landmark discovery announced on Thursday that opens a new window for studying the cosmos.
The researchers said they identified gravitational waves coming from two distant black holes — extraordinarily dense objects whose existence also was foreseen by Einstein — that orbited one another, spiraled inward and smashed together at high speed to form a single, larger black hole.
The waves were unleashed by the collision of the black holes, one of them 29 times the mass of the sun and the other 36 times the solar mass, located 1.3 billion light years from Earth, the researchers said.
“Ladies and gentlemen, we have detected gravitational waves. We did it,” said California Institute of Technology physicist David Reitze, triggering applause at a packed news conference in Washington.
“It’s been a very long road, but this is just the beginning,” Louisiana State University physicist Gabriela Gonzalez told the news conference, hailing the discovery as opening a new era in astronomy.
The scientific milestone was achieved using a pair of giant laser detectors in the United States, located in Louisiana and Washington state, capping a decades-long quest to find these waves.
“The colliding black holes that produced these gravitational waves created a violent storm in the fabric of space and time, a storm in which time speeded up, and slowed down, and speeded up again, a storm in which the shape of space was bent in this way and that way,” Caltech physicist Kip Thorne said.
The scientists first detected the waves last Sept. 14.
The two instruments, working in unison, are called the Laser Interferometer Gravitational-Wave Observatory (LIGO). They detected remarkably small vibrations from the gravitational waves as they passed through the Earth. The scientists converted the wave signal into audio waves and listened to the sounds of the black holes merging.
At the news conference, they played an audio recording of this: a low rumbling pierced by chirps.
“We’re actually hearing them go thump in the night,” Massachusetts Institute of Technology physicist Matthew Evans said. “There’s a very visceral connection to this observation.”
“We are really witnessing the opening of a new tool for doing astronomy,” MIT astrophysicist Nergis Mavalvala said in an interview. “We have turned on a new sense. We have been able to see and now we will be able to hear as well.”
While opening a door to new ways to observe the universe, scientists said gravitational waves should help them gain knowledge about enigmatic objects like black holes and neutron stars. The waves also may provide insight into the mysterious nature of the very early universe.
The scientists said that because gravitational waves are so radically different from electromagnetic waves they expect them to reveal big surprises about the universe.
Einstein’s gravitational waves detected in landmark discovery
Einstein’s gravitational waves detected in landmark discovery
Indian forces kill 30 Maoist rebels, one soldier dead
Another four rebels were killed in a separate clash in the state’s south
NEW DELHI: Indian forces killed at least 30 Maoist rebels Thursday in one of the deadliest jungle clashes since the government ramped up efforts to crush the long-running insurgency.
More than 10,000 people have been killed in the decades-long “Naxalite” rebellion, whose members say they are fighting for the rights of marginalized people in India’s resource-rich central regions.
An Indian paramilitary soldier was also killed in one of two separate skirmishes that broke out in central Chhattisgarh state, both of which carried on through the day, according to police.
Bastar Inspector General of Police Sundarraj Pattilingam told AFP that the soldier had been killed during a skirmish that broke out in Bijapur district, where 26 guerrillas had also been killed.
Another four rebels were killed in a separate clash in the state’s south.
Searches at both battle sites saw security forces recovering caches of arms and ammunition from both areas.
“The (Narendra) Modi government is moving forward with a ruthless approach against Naxalites and is adopting a zero tolerance policy against those Naxalites who are not surrendering,” interior minister Amit Shah wrote on social media platform X.
The rebels, known as Naxalites after the district where their armed campaign began in 1967, were inspired by the Chinese revolutionary leader Mao Zedong.
Shah has repeatedly vowed that India’s government would crush the remnants of the rebellion by the end of March next year.
A crackdown by security forces killed around 287 rebels last year, an overwhelming majority of them in Chhattisgarh, according to government data.
More than 80 Maoists had already been killed so far this year, according to a tally on Sunday by the Press Trust of India news agency.
The Maoists demand land, jobs and a share of the region’s immense natural resources for local residents.
They made inroads in a number of remote communities across India’s east and south, and the movement gained in strength and numbers until the early 2000s.
New Delhi then deployed tens of thousands of troops in a stretch of territory known as the “Red Corridor.”
The conflict has also seen scores of deadly attacks on government forces. A roadside bomb killed at least nine Indian troops in January.
Indian forces killed at least 30 Maoist rebels Thursday in one of the deadliest jungle clashes since the government ramped up efforts to crush the long-running insurgency. (AFP/File)
Putin must stop ‘unnecessary demands’ that prolong war, Zelensky tells EU
- “Sanctions must remain in place until Russia starts withdrawing from our land,” he said
BRUSSELS: Ukraine President Volodymyr Zelensky said Moscow must stop making “unnecessary demands” that extend the war, calling for sanctions on Russia to remain in place until it begins pulling out of Ukrainian territory.
“Putin must stop making unnecessary demands that only prolong the war and must start fulfilling what he promises the world,” he told EU leaders by video call, according to an official transcript.
“Sanctions must remain in place until Russia starts withdrawing from our land and fully compensates for the damage caused by its aggression.”
UK PM Starmer: We must be ready to react quickly if Ukraine peace deal struck
- “(Our) plans are focusing on keeping the sky safe, the sea safe and the border safe and secure in Ukraine,” Starmer said
LONDON: British Prime Minister Keir Starmer said on Thursday it was important Britain and its allies were able to react immediately should there be a peace deal struck between Russia and Ukraine.
His comments, made during a visit to a nuclear submarine facility, come on the day military chiefs from dozens of countries meet in Britain to discuss planning for a possible peacekeeping force in Ukraine.
“(Our) plans are focusing on keeping the sky safe, the sea safe and the border safe and secure in Ukraine, and working with the Ukrainians,” Starmer told reporters.
“We’re working at pace because we don’t know if there’ll be a deal. I certainly hope there will be, but if there’s a deal, it’s really important that we’re able to react straight away.”
Georgetown University scholar has been detained by immigration officials, prompting legal fight
- Badar Khan Suri, a postdoctoral scholar at Georgetown University, was accused of “spreading Hamas propaganda and promoting antisemitism on social media”
- The deportation effort comes amid legal fights over cases involving a Columbia University international affairs graduate student and a doctor from Lebanon
VIRGINIA: A Georgetown University researcher has been detained by immigration officials, prompting another high-profile legal fight over deportation proceedings against foreign-born visa holders who live in the US
Badar Khan Suri, a postdoctoral scholar at Georgetown University, was accused of “spreading Hamas propaganda and promoting antisemitism on social media” and determined to be deportable by the Secretary of State’s office, Homeland Security Assistant Secretary Tricia McLaughlin said late Wednesday on X, formerly known as Twitter.
The deportation effort comes amid legal fights over cases involving a Columbia University international affairs graduate student and a doctor from Lebanon.
Politico, which first reported on Suri’s case, said that masked agents arrested him outside his home in Arlington, Virginia, on Monday night and told him his visa had been revoked, citing a legal filing by his lawyer.
His lawyer didn’t immediately respond to an messages seeking further comment Thursday. An online court docket shows that an urgent motion seeking to halt the deportation proceedings was filed Tuesday against the Trump administration.
A Georgetown University webpage identifies Suri as a postdoctoral fellow at Alwaleed Bin Talal Center for Muslim-Christian Understanding at the university. The university said his areas of interest include religion, violence and peace processes in the Middle East and South Asia. The bio said that he earned a doctorate in India while studying efforts to introduce democracy to Afghanistan and Iraq, and he has traveled extensively in conflict zones in several countries.
The university said in a statement Thursday that Suri is an Indian national who was “duly granted a visa to enter the United States to continue his doctoral research on peacebuilding in Iraq and Afghanistan.”
“We are not aware of him engaging in any illegal activity, and we have not received a reason for his detention,” the school said. “We support our community members’ rights to free and open inquiry, deliberation and debate, even if the underlying ideas may be difficult, controversial or objectionable. We expect the legal system to adjudicate this case fairly.”
The US Customs and Immigration Enforcement detainee locator website lists Suri as being in the custody of immigration officials at the Alexandria Staging Facility in Louisiana.
Separately, Columbia University student activist Mahmoud Khalil, a legal US resident with no criminal record, was detained earlier this month over his participation in pro-Palestinian demonstrations and is fighting deportation efforts in federal court. And Dr. Rasha Alawieh, a kidney transplant specialist who previously worked and lived in Rhode Island, was deported over the weekend despite having a US visa.
Ukraine, US teams ready to meet in Saudi Arabia in ‘coming days’: Zelensky
Kyiv, Ukraine: Officials from Ukraine and the United States could meet in Saudi Arabia in the coming days for a second round of peace talks, Ukrainian President Volodymyr Zelensky said Wednesday.
“Ukrainian and American teams are ready to meet in Saudi Arabia in the coming days to continue coordinating steps toward peace,” Zelensky wrote on X.
