Latest MCQs on Universe for Competitive Exams

271. Which planet has the fastest winds in the solar system?
A) Neptune
B) Jupiter
C) Uranus
D) Saturn
Correct Answer: A) Neptune
Explanation: Neptune’s winds can reach speeds of over 2,000 km/h.

272. What is the name of the first spacecraft to orbit an asteroid?
A) NEAR Shoemaker
B) Hayabusa
C) OSIRIS-REx
D) Dawn
Correct Answer: A) NEAR Shoemaker
Explanation: NEAR Shoemaker orbited asteroid Eros in 2000.

273. Which planet is known for its “diamond rain” phenomenon?
A) Uranus
B) Neptune
C) Jupiter
D) Saturn
Correct Answer: A) Uranus
Explanation: Uranus is believed to have diamond rain deep in its atmosphere.

274. What is the name of the first spacecraft to orbit Jupiter?
A) Galileo
B) Voyager 1
C) Pioneer 10
D) Cassini
Correct Answer: A) Galileo
Explanation: Galileo orbited Jupiter from 1995 to 2003.

275. Which planet has the most extreme seasons due to its axial tilt?
A) Uranus
B) Neptune
C) Saturn
D) Mars
Correct Answer: A) Uranus
Explanation: Uranus’s tilt causes extreme seasonal changes.

276. What is the name of the first spacecraft to orbit Pluto?
A) New Horizons
B) Voyager 2
C) Pioneer 10
D) None
Correct Answer: D) None
Explanation: No spacecraft has orbited Pluto; New Horizons performed a flyby.

277. Which planet has the highest albedo (reflectivity) in the solar system?
A) Venus
B) Earth
C) Jupiter
D) Saturn
Correct Answer: A) Venus
Explanation: Venus reflects about 70% of the sunlight that hits it due to its thick cloud cover.

278. What is the name of the first spacecraft to land on a comet?
A) Philae
B) Hayabusa
C) Stardust
D) Deep Impact
Correct Answer: A) Philae
Explanation: Philae landed on comet 67P/Churyumov–Gerasimenko in 2014.

279. Which planet has the largest core relative to its size?
A) Mercury
B) Earth
C) Mars
D) Venus
Correct Answer: A) Mercury
Explanation: Mercury’s core makes up a large portion of its volume.

280. What is the name of the first spacecraft to orbit the Sun at a distance closer than Mercury?
A) Parker Solar Probe
B) Helios 1
C) Ulysses
D) Solar and Heliospheric Observatory
Correct Answer: A) Parker Solar Probe
Explanation: Parker Solar Probe is the closest spacecraft to the Sun.