Q321: The brightest object we usually see in the night sky is the Moon.
Answer: True ✔
💡 The Moon is usually the brightest thing we see in the night sky because it is very close to us and reflects the sunlight that falls on it.
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Answer: True ✔
💡 The Moon is usually the brightest thing we see in the night sky because it is very close to us and reflects the sunlight that falls on it.
Answer: An artificial satellite
💡 Artificial satellites are devices that people launch on rockets to orbit Earth, where they carry broadcasts, communications and weather images.
Answer: A meteorite
💡 Most space rocks burn up in the atmosphere, and those that reach Earth's surface are called meteorites.
Answer: True ✔
💡 At night Jupiter appears as a very bright dot that does not twinkle like the stars, and it can be seen without a telescope at many times of the year.
Answer: False ✖
💡 Stars are huge suns, many of them bigger than our Sun, and they look like tiny dots because they are very far away from us.
Answer: False ✖
💡 Sound needs air or some other material to travel through, and space has almost no air, so astronauts talk to each other using radios.
Answer: False ✖
💡 The Sun is much bigger than Earth; it could hold more than a million Earth-sized balls. It looks small because it is far away from us.
Answer: True ✔
💡 Scientists have not found life on any other planet. Earth has the water, air and right temperatures for life.
Answer: False ✖
💡 The North Star is famous for staying fixed above the north, not for its brightness. The brightest star in the night sky is Sirius.
Answer: False ✖
💡 The Moon has almost no atmosphere, so astronauts wear suits that carry oxygen when they walk on its surface.
Answer: True ✔
💡 Our galaxy has billions of stars, and the Sun is one of them. It looks like the biggest to us because it is the closest.
Answer: 24 hours
💡 Earth spins once on its axis about every 24 hours, and this period is one day, night and daytime together.
Answer: A meteor
💡 When a small space rock enters the atmosphere at high speed, it burns up, and we see a quick streak of light called a meteor (shooting star).
Answer: An orbit
💡 An orbit is the path in which one object goes around another, like Earth's orbit around the Sun and the Moon's orbit around Earth.
Answer: Phobos
💡 Mars has two small moons, Phobos and Deimos. Titan is a moon of Saturn, and Ganymede and Europa are moons of Jupiter.
Answer: A space probe
💡 A space probe is an uncrewed robotic spacecraft that carries instruments and cameras and sends data and pictures back to scientists on Earth.
Answer: Venus
💡 Venus is the second planet from the Sun, so its orbit lies between that of Mercury, the first, and that of Earth, the third.
Answer: True ✔
💡 The Moon's diameter is about one-quarter of Earth's, so its gravity is weaker than Earth's.
Answer: Earth's gravity
💡 Earth's gravity constantly pulls the Moon toward it, so the Moon keeps circling Earth instead of drifting off into space.
Answer: A constellation
💡 A constellation is a group of stars that people connect in their imagination into a familiar shape, like the Great Bear and Orion.