True or False Questions About Space

Planets, stars and the strange physics of the universe — some of these facts sound made up, and some are.

Play this topic7 questions · ~1 min

Guess first, then tap a statement to see the answer.

  1. Mars has two natural moons.
    True

    Mars has two irregularly shaped moons named Phobos and Deimos.

  2. Venus rotates on its axis in the opposite direction to most planets.
    True

    Venus has retrograde rotation, so the Sun would appear to rise in the west and set in the east.

  3. The asteroid belt lies between the orbits of Mars and Jupiter.
    True

    Most known asteroids in the Solar System orbit there.

  4. All asteroids in the Solar System are found only in the main asteroid belt.
    Lie

    There are near-Earth asteroids, Trojans and other asteroid populations beyond the main belt.

  5. The James Webb Space Telescope observes mainly in infrared light.
    True

    Infrared observations allow JWST to study cold objects and extremely distant galaxies.

  6. Apollo 13 successfully landed on the Moon.
    Lie

    After an oxygen tank explosion, the landing was canceled and the crew safely returned to Earth.

  7. Olympus Mons is located on Venus.
    Lie

    Olympus Mons is on Mars. Venus has volcanoes too, but not this one.

  8. Europa's surface is completely covered by liquid water.
    Lie

    Europa's surface is mostly ice. The liquid ocean lies underneath.

  9. Halley's Comet returns to the inner Solar System every year.
    Lie

    Halley's Comet returns roughly every 75-76 years.

  10. The solar wind consists of charged particles streaming from the Sun.
    True

    The solar wind interacts with planetary magnetic fields and can produce auroras.

  11. Saturn V remains the most powerful rocket to successfully send humans to the Moon.
    True

    Saturn V launched every crewed Apollo mission to the Moon.

  12. Venus has more known moons than Jupiter.
    Lie

    Venus has no natural moons, while Jupiter has many.

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