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MCQ Practice

Technological Knowledge MCQs

Which NASA mission is designed to travel closer to the Sun than any previous spacecraft?

  • A. Voyager 1
  • B. Parker Solar Probe
  • C. Cassini
  • D. New Horizons
Explanation:
The Parker Solar Probe approaches the Sun’s corona more closely than any prior mission.

Which planet in our solar system has an orbital period shorter than its rotational period (a day longer than its year)?

  • A. Mercury
  • B. Venus
  • C. Mars
  • D. Jupiter
Explanation:
Venus rotates very slowly (a Venusian day is about 243 Earth days) compared to its 225-day orbit around the Sun.

Which star is the closest known star to the Sun?

  • A. Proxima Centauri
  • B. Sirius
  • C. Alpha Centauri A
  • D. Barnard's Star
Explanation:
Proxima Centauri, part of the Alpha Centauri system, is the Sun's nearest stellar neighbor at about 4.24 light-years.

What cosmic phenomenon is the cosmic microwave background (CMB) associated with?

  • A. Solar flares
  • B. Big Bang
  • C. Black holes
  • D. Dark energy
Explanation:
The CMB is the leftover radiation from the early hot universe, supporting the Big Bang theory.

In what year did the Vera C. Rubin Observatory, with its 8.4-meter telescope, see first light?

  • A. 2023
  • B. 2024
  • C. 2025
  • D. 2026
Explanation:
It saw first light in the summer of 2025 after over a decade of construction.

Approximately how much data does the Vera C. Rubin Observatory collect each night?

  • A. 20 gigabytes
  • B. 200 gigabytes
  • C. 20 terabytes
  • D. 200 terabytes
Explanation:
The Rubin Observatory’s 3.2-gigapixel camera captures about 20 TB of data per night.

The Vera C. Rubin Observatory's primary mission is to survey the sky for studies of:

  • A. Solar system planets
  • B. Dark matter and dark energy
  • C. Nearby satellites
  • D. Intergalactic propulsion
Explanation:
Rubin Observatory's wide-field survey is focused on mapping dark matter and dark energy through cosmic structure.

New research suggests the Milky Way and Andromeda galaxies will:

  • A. Merge in exactly 4 billion years
  • B. Have only about a 50% chance of colliding
  • C. Never interact due to cosmic expansion
  • D. Collide in 10 million years
Explanation:
Accounting for additional gravitational influences, there's roughly a 50-50 chance they will collide in the future.

The exoplanet candidate discovered orbiting Alpha Centauri A is notable because its mass is similar to that of which planet in our Solar System?

  • A. Earth
  • B. Jupiter
  • C. Saturn
  • D. Uranus
Explanation:
Observations suggest an Alpha Centauri A exoplanet with a mass similar to Saturn, likely a gas giant.

Which nearby star system had four rocky exoplanets confirmed around it by 2025?

  • A. Barnard's Star
  • B. Proxima Centauri
  • C. Sirius
  • D. Vega
Explanation:
Four small rocky planets were confirmed around Barnard's Star (though none are in the habitable zone).