What is Voyager 1 and why is it important?

Voyager 1 is a NASA spacecraft launched in 1977 to study the outer planets, including Jupiter and Saturn. It is currently the most distant human-made object in space and is traveling through interstellar space. Voyager 1 provides valuable scientific data about the heliosphere and interstellar conditions.

What is a radioisotope thermoelectric generator (RTG)?

A radioisotope thermoelectric generator (RTG) is a device that generates electricity using heat released from the natural radioactive decay of plutonium. Voyager spacecraft use RTGs to produce power in deep space where solar energy is insufficient.

What is hantavirus and how does it spread?

Hantavirus is a family of rodent-borne viruses that can cause severe illness in humans. It spreads through contact with urine, saliva, or feces of infected rodents, by touching contaminated surfaces, or by inhaling virus particles in the air. Human-to-human transmission is rare.

What is Hantavirus Pulmonary Syndrome (HPS)?

Hantavirus Pulmonary Syndrome (HPS) is a severe respiratory disease caused by New World hantaviruses. It begins with flu-like symptoms and can progress to severe breathing difficulty. The fatality rate can reach nearly one-third of infected individuals.

What does wave-particle duality mean?

Wave-particle duality is a fundamental principle of quantum mechanics stating that light and matter exhibit both wave-like and particle-like properties. Experiments such as the double-slit experiment confirm this dual behavior.

Antimatter consists of particles that have the same mass as ordinary matter but opposite electric charge. When matter and antimatter meet, they annihilate each other and release energy. The positron is the antimatter counterpart of the electron.

What causes the Eta Aquarid meteor shower?

The Eta Aquarid meteor shower is caused by debris left behind by Halley's Comet. As Earth passes through this debris stream, particles burn up in the atmosphere, creating bright streaks known as shooting stars.

Is the Eta Aquarid meteor shower visible in India?

Yes, although it is more prominently visible in the southern hemisphere, observers in India can see the Eta Aquarid meteor shower in the early morning hours under clear skies.

What is the Naval Anti-Ship Missile Short Range (NASM-SR)?

NASM-SR is an indigenously developed short-range anti-ship missile by DRDO and the Indian Navy. It is designed for helicopter launch and features man-in-loop capability, waterline hit precision, a solid propulsion booster, and a radio altimeter for sea-skimming operations.

What is the 'man-in-loop' feature in missiles?

The man-in-loop feature allows real-time human control or intervention during missile flight through a high-bandwidth two-way data link, enabling greater targeting accuracy and flexibility.

Daily UPSC Prelims MCQs - Science & Tech. - 13th May 2026

Devesh
4 days ago
1 min read

Test your UPSC CSE 2026 preparation with today’s Science & Technology (Every wednesday) Quiz — covering Voyager 1, hantavirus, wave-particle duality, Eta Aquarid meteor shower, Naval Anti-Ship Missile Short Range (NASM-SR) and more.

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