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
Filipinos celebrate Christmas on a budget amid soaring costs
- Filipinos are choosing modest Christmas gifts, scaling down year-end festivities
- Millions look to content creators for tips on how to spend less for Christmas dinner
MANILA: As the predominantly Catholic Philippines celebrates one of its most important annual holidays on Thursday, many Filipinos have been forced to rethink their traditional Christmas celebrations amid soaring prices.
This year, street food vendor Gemma Gracia is among those who will keep her business open during the holidays.
“As a vendor, I’ve felt the prices go up since I also still buy at the market for our needs and for our selling needs,” she told Arab News.
But as celebrating Christmas was important for her family, the 39-year-old has allocated 1,000 Philippine pesos ($17) for a family meal out at Jollibee, the Philippines’ biggest fast-food chain restaurant.
“When you don’t have food to share on the table on this holiday, it’s a sad day. That’s why we make sure that we always have something on the table each year,” she said.
For many Filipinos, the time-honored traditions of Noche Buena, or Christmas Eve, is the most awaited part of this holiday season, when dinner tables across the country are filled with a hearty selection of traditional dishes.
Noche Buena, which is Spanish for “the good night,” is the dinner that follows the last evening mass of the season, known as misa de gallo or simbang gabi.
In the Philippines, such festive staples include meaty Filipino-style spaghetti and hamonado, the local version of a Christmas ham that usually serves as the centerpiece of Christmas dinner tables.
But the pinch from rising prices has affected Filipino shoppers in recent years, forcing them to adjust according to their budget.
Although the country’s central bank said inflation had eased to 1.5 percent in November, many say the statistics do not reflect on-the-ground realities, where people reel from rising retail prices, shrinking portions and diminishing purchasing power of the peso.
Allan Manansala, a 48-year-old construction worker in Manila, told Arab News that he is expecting to spend 5,000 pesos for his family of five in 2025, nearly a third of his monthly wage and about a fifth higher than what he spent in previous years.
“I might have to skip giving my children gifts this year because of the costs,” he said.
To get around the high costs, Manansala is skipping the Noche Buena festivities altogether and has instead decided to splurge on New Year’s Eve dinner, which is also a significant occasion in the Philippines.
Others, like Allan Melenio, look for different ways to save up.
“Our relative owns a meat shop, so we’re able to save on that since the prices are quite low,” he told Arab News. “But everywhere else, a piece of meat can cost so much.”
While the economy has forced Filipinos to make smarter choices and get creative, content creators are among those offering ideas to address consumers’ woes, teaching people how to stretch their meager budgets for the holidays.
One such tip came from Ninong Ry, a food content creator who challenged himself to prepare an eight-dish Noche Buena dinner with a budget of 1,500 pesos. Posted about two weeks before Christmas, his one-hour YouTube video has since garnered more than 1.4 million views.
The video was also a response to comments from Philippine Trade Secretary Cristina Aldeguer-Roque, who suggested last month that 500 pesos was enough for a family of four to host a modest Christmas Eve dinner, sparking anger among Filipinos who said she was out of touch with reality.
Jelmark Toqueb, who works as a plumber in Manila, said that the 500-peso budget was unrealistic.
“It is clearly not enough. (Five hundred pesos) is not even enough for you to cook spaghetti with meat. Maybe just the noodles and the sauce,” he told Arab News.
For 32-year-old Toqueb and his wife, who works as a public school teacher, the holiday season remains a cherished occasion to spend quality time with the family. As their Christmas tradition involves gift-giving, he chose more modest presents this year to circumvent the high costs.
“The prices now are different even from last year, (when they were) already high,” Toqueb said. “Even if the gift is simple, it’s fine. It’s the thought that counts.”
