Black Hole Discoveries Win 2020 Nobel Prize for Physics

Britain's Roger Penrose, Reinhard Genzel of Germany and US scientist Andrea Ghez won the 2020 Nobel Prize for Physics. (AP)
Britain's Roger Penrose, Reinhard Genzel of Germany and US scientist Andrea Ghez won the 2020 Nobel Prize for Physics. (AP)
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Black Hole Discoveries Win 2020 Nobel Prize for Physics

Britain's Roger Penrose, Reinhard Genzel of Germany and US scientist Andrea Ghez won the 2020 Nobel Prize for Physics. (AP)
Britain's Roger Penrose, Reinhard Genzel of Germany and US scientist Andrea Ghez won the 2020 Nobel Prize for Physics. (AP)

Britain's Roger Penrose, Reinhard Genzel of Germany and US scientist Andrea Ghez won the 2020 Nobel Prize for Physics for their discoveries about one of the most exotic phenomena in the universe, the black hole, the award-giving body said on Tuesday.

Penrose, professor at the University of Oxford, won half the prize for his work using mathematics to prove that black holes are a direct consequence of the general theory of relativity.

Genzel, of the Max Planck Institute and University of California, Berkeley, and Ghez, at the University of California, Los Angeles, shared the other half for discovering that an invisible and extremely heavy object governs the orbits of stars at the center of our galaxy.

Physics is the second of this year's crop of Nobels to be awarded, after three scientists won the medicine prize for their discovery of Hepatitis C on Monday.

Among the Nobel prizes, physics has often dominated the spotlight with past awards going to scientific superstars such as Albert Einstein for fundamental discoveries about the make-up of the universe, including the general theory of relativity.

"The discoveries of this year's Laureates have broken new ground in the study of compact and supermassive objects," David Haviland, chair of the Nobel Committee for Physics, said on awarding the 10 million Swedish crown ($1.1 million) prize.

"But these exotic objects still pose many questions that beg for answers and motivate future research."

Ghez is only the fourth woman to win the physics prize, after Marie Curie in 1903, Maria Goeppert Mayer in 1963 and Donna Strickland in 2018.

The Nobel prizes were created in the will of Swedish dynamite inventor and businessman Alfred Nobel and have been awarded since 1901.

This year's awards occur under the long shadow of the COVID-19 pandemic that has curtailed much of the usual festivities surrounding the prizes and sent the scientific world racing to develop a vaccine and treatment.



Google Warns Staff with US Visas against International Travel

FILE PHOTO: The Google logo is displayed during a press conference in Berlin, Germany, November 11, 2025. REUTERS/Lisi Niesner/File Photo
FILE PHOTO: The Google logo is displayed during a press conference in Berlin, Germany, November 11, 2025. REUTERS/Lisi Niesner/File Photo
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Google Warns Staff with US Visas against International Travel

FILE PHOTO: The Google logo is displayed during a press conference in Berlin, Germany, November 11, 2025. REUTERS/Lisi Niesner/File Photo
FILE PHOTO: The Google logo is displayed during a press conference in Berlin, Germany, November 11, 2025. REUTERS/Lisi Niesner/File Photo

Alphabet's Google has advised some employees on US visas to avoid international travel due to delays at embassies, Business Insider reported on Friday, citing an internal email.

The email, sent by the company's outside counsel BAL Immigration Law on Thursday, warned staff who need a visa ⁠stamp to re-enter the United States not to leave the country because visa processing times have lengthened, the report said.

Google did not immediately respond to a Reuters request for comment.

Some US embassies and consulates face visa ⁠appointment delays of up to 12 months, the memo said, warning that international travel will "risk an extended stay outside the US", according to the report.

The administration of President Donald Trump this month announced increased vetting of applicants for H-1B visas for highly skilled workers, including screening social media accounts.

The H-1B visa program, widely used by the US ⁠technology sector to hire skilled workers from India and China, has been under the spotlight after the Trump administration imposed a $100,000 fee for new applications this year.

In September, Google's parent company Alphabet had strongly advised its employees to avoid international travel and urged H-1B visa holders to remain in the US, according to an email seen by Reuters.


AI Boom Drives Data-Center Dealmaking to Record High, Says Report

AI (Artificial Intelligence) letters and robot hand are placed on computer motherboard in this illustration created on June 23, 2023. REUTERS/Dado Ruvic/Illustration/File Photo
AI (Artificial Intelligence) letters and robot hand are placed on computer motherboard in this illustration created on June 23, 2023. REUTERS/Dado Ruvic/Illustration/File Photo
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AI Boom Drives Data-Center Dealmaking to Record High, Says Report

AI (Artificial Intelligence) letters and robot hand are placed on computer motherboard in this illustration created on June 23, 2023. REUTERS/Dado Ruvic/Illustration/File Photo
AI (Artificial Intelligence) letters and robot hand are placed on computer motherboard in this illustration created on June 23, 2023. REUTERS/Dado Ruvic/Illustration/File Photo

Global data-center dealmaking surged to a record high through November this year, driven by an insatiable demand for ​computing infrastructure to meet the boom in artificial intelligence usage.

Data from S&P Global Market Intelligence showed that there were more than 100 data center transactions during the period, with the total value sitting just under $61 billion.

WHY ‌IT'S IMPORTANT

Interest ‌in data centers ‌has ⁠swelled ​this ‌year as tech giants and AI hyperscalers have planned billions of dollars in spending to scale up infrastructure.

AI-related companies have powered much of the gains in US stocks this year, but concerns over lofty ⁠valuations and debt-fueled spending have also sparked worries ‌over how quickly corporates can ‍turn the investments ‍into profits.

BY THE NUMBERS

Including M&As, asset ‍sales and equity investments, data center investments hit nearly $61 billion through the end of November, already surpassing 2024's record high $60.81 billion.

Since ​2019, data center dealmaking in the US and Canada totaled about $160 billion, ⁠with Asia-Pacific reaching nearly $40 billion and Europe $24.2 billion.

GRAPHIC KEY QUOTE

"High interest comes from financial sponsors, which are attracted by the risk/reward profile of such assets. Private equity firms are eager buyers but are generally reluctant sellers, creating an environment where availability for sale of high-quality data center assets is scarce," said Iuri ‌Struta, TMT analyst at S&P Global Market Intelligence.


YouTube Down for Thousands of US Users, Downdetector Shows

The YouTube app icon on a smartphone in this illustration taken October 27, 2025. REUTERS/Dado Ruvic/Illustration/File Photo
The YouTube app icon on a smartphone in this illustration taken October 27, 2025. REUTERS/Dado Ruvic/Illustration/File Photo
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YouTube Down for Thousands of US Users, Downdetector Shows

The YouTube app icon on a smartphone in this illustration taken October 27, 2025. REUTERS/Dado Ruvic/Illustration/File Photo
The YouTube app icon on a smartphone in this illustration taken October 27, 2025. REUTERS/Dado Ruvic/Illustration/File Photo

Google's YouTube was ​down for thousands of users in the ‌United ‌States ‌on ⁠Friday, ​according to ‌Downdetector.com, Reuters reported.

There were more than 10,800 reports of ⁠issues with ‌the streaming ‍platform ‍as of ‍08:15 a.m. ET, according to Downdetector, ​which tracks outages by ⁠collating status reports from a number of sources.

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Outage ‌reports exceeded 1,300 ‍in ‍Canada as of ‍8:29 a.m. ET; and more than 3,000 in the UK of ​8:30 a.m. ET.

YouTube did not immediately ⁠respond to a Reuters request for comment.

The actual number of affected users may differ from what's shown on Downdetector because these reports are user-submitted.