Latest MCQs on Universe for Competitive Exams

231. Which planet is known for its “shepherd moons” that help maintain its rings?
A) Saturn
B) Jupiter
C) Uranus
D) Neptune
Correct Answer: A) Saturn
Explanation: Saturn’s shepherd moons help keep its rings in place.

232. What is the name of the first spacecraft to orbit Mercury?
A) Messenger
B) Mariner 10
C) BepiColombo
D) Pioneer 11
Correct Answer: A) Messenger
Explanation: Messenger orbited Mercury from 2011 to 2015.

233. Which planet has the most similar length of day to Earth?
A) Mars
B) Venus
C) Mercury
D) Jupiter
Correct Answer: A) Mars
Explanation: A day on Mars is about 24 hours and 37 minutes.

234. What is the name of the first spacecraft to land on Venus and transmit data?
A) Venera 7
B) Mariner 2
C) Luna 9
D) Surveyor 1
Correct Answer: A) Venera 7
Explanation: Venera 7 was the first to land and send data from Venus.

235. Which planet has the most circular orbit?
A) Venus
B) Earth
C) Mars
D) Jupiter
Correct Answer: A) Venus
Explanation: Venus has the least eccentric (most circular) orbit.

236. What is the name of the first spacecraft to orbit the Moon?
A) Luna 10
B) Apollo 8
C) Surveyor 1
D) Ranger 7
Correct Answer: A) Luna 10
Explanation: Luna 10 was the first satellite to orbit the Moon in 1966.

237. Which planet is known for its bright white clouds of sulfuric acid?
A) Venus
B) Earth
C) Mars
D) Jupiter
Correct Answer: A) Venus
Explanation: Venus’s clouds are composed mainly of sulfuric acid.

238. What is the name of the first spacecraft to land on Mars and transmit data back to Earth?
A) Viking 1
B) Pathfinder
C) Curiosity
D) Opportunity
Correct Answer: A) Viking 1
Explanation: Viking 1 was the first to land and send data from Mars.

239. 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.

240. 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.