Explanation

Nuclear energy constitutes approximately 9% to 10% of total global electricity generation. 

Nuclear is the world's second-largest source of low-carbon electricity

Nuclear energy helps reduce dependence on fossil fuels.

Explanation

“Cautiously optimistic” indicates a positive outlook while being aware of potential risks.

It reflects hopefulness for economic improvement.

Explanation

Explanation

Oracle Corporation was co-founded in 1977.

Oracle was co-founded by Larry Ellison, Bob Miner, and Ed Oates

Larry Ellison: Served as CEO until 2014 and is currently the Executive Chairman and CTO.

Explanation

Gaganyaan is an Indian crewed orbital spacecraft

The first crewed mission was originally planned to be launched on ISRO's HLVM3 rocket in December 2021.

As of November 2024, it is expected to be launched no earlier than 2027

Explanation

Ray Tomlinson, an American programmer, invented email 

When: 1971.

Where: Working for Bolt, Beranek and Newman (BBN) on the ARPANET.

Explanation

Argentina,  Chile, and Colombia are all sovereign countries located on the continent of South America.

 Bulgaria is located in Southeastern Europe on the Balkan Peninsula. 

Explanation

The Egyptian civilization developed along the Nile River in northeastern Africa,

It is one of the world's oldest civilizations, flourishing around 3100 BCE.

Explanation

50-year-old Shooter Sajid Akram along with 24-year-old Shooter Naveed Arkam,

Vsited Philipines on an Indian passport before the Bondi Beach attack

Additional Information

On 14 December 2025, an Islamic State (IS)-inspired terrorist attack occurred at Bondi Beach in Sydney, Australia,

Ahmed Al-Ahmed (43): A Syrian-born Muslim fruit-shop owner hailed as a "hero."

Explanation

Luminosity is the total amount of energy a star emits per second.

It depends on the star’s size and temperature.

Brightness is how bright the star appears from Earth, which can vary with distance.

Magnitude is a scale to measure stellar brightness.