Selected MCQ

Current Question
What unique findings did the Perseverance rover detect in Mars' Jezero Crater in 2025?
  • A. Liquid water lakes
  • B. Leopard-like spots on rocks, hinting at past life
  • C. Active volcanic vents
  • D. Earth-like atmosphere samples
Correct Answer: B
Explanation:
It found reddish "leopard spots" on rocks that may be linked to ancient microbial activity.
Related Question 1
Which Mars rover first identified definitive evidence of past water on Mars?
  • A. Spirit
  • B. Opportunity
  • C. Curiosity
  • D. Sojourner
Correct Answer: B
Explanation:
Opportunity found strong evidence (hematite spheres) of ancient water on Mars.
Related Question 2
What method do astronomers use when they detect exoplanets by observing a star's light dimming at regular intervals?
  • A. Radial velocity method
  • B. Transit method
  • C. Direct imaging
  • D. Astrometry
Correct Answer: B
Explanation:
The transit method identifies exoplanets by periodic dips in a star's brightness as a planet crosses its face.