Explanation

• The Iran nuclear agreement, officially called the Joint Comprehensive Plan of Action (JCPOA), was concluded on 14 July 2015.
• It involved Iran and the P5+1 countries: China, France, Russia, the United Kingdom, the United States, and Germany.
• The agreement aimed to limit Iran’s nuclear activities in exchange for sanctions relief.

Last verified on 30-10-2026

Explanation

• The United States conducted the world’s first nuclear test, code-named Trinity, on 16 July 1945.
• The test took place in the Jornada del Muerto desert in New Mexico, USA.
• The experiment was part of the Manhattan Project, a secret American-led programme to develop atomic weapons during World War II.

Additional information:

• Soviet Union: 1949
• United Kingdom: 1952
• China: 1964

Last verified on 22-10-2026

Explanation

• India conducted its first nuclear test on May 18, 1974
• Codename: Smiling Buddha (or Pokhran-I).
• Location: Pokhran, Rajasthan, India.
• Type: Plutonium fission device.
• Smiling Buddha, other name Pokhran-I 
• Number of tests 1

Last updated by NA on 24-April-2026

Explanation

• Chandrayaan-3 is India's lunar mission.
• It was successfully landed on the Moon on 23 August 2023.
• It was launched on 14 July 2023
• It was launched from Satish Dhawan Space Centre, Sriharikota, Andhra Pradesh.
• India became the first country to achieve a soft landing near the Moon's south pole.
• Space Agency: Indian Space Research Organisation (ISRO)
• Lander & Rover: Vikram (Lander) and Pragyan (Rover)
• "Chandrayaan" is a Sanskrit word meaning "Mooncraft."

Last verified on 12-07-2026

Explanation

• The first artificial satellite in the world was Sputnik 1
• Launch Date: October 4, 1957
• Country: Soviet Union (USSR)
• Size: 58 centimeters (22.8 inches) in diameter
• Weight: 83.6 kilograms (183.9 pounds)
• Mission Life: Transmitted radio beeps for 3 weeks before batteries died; burned up in the atmosphere on January 4, 1958.

Last updated 07-09-2026 by NA