Space questions for kids

Questions about the Moon, stars, planets and the night sky.

Why does the moon change shape?
Why do stars twinkle?
Why is space dark?
Why do astronauts float?
Why does the moon shine?
Why is the Sun hot?
Why do rockets need so much power?
Why does Saturn have rings?
Why do comets have tails?
Why do telescopes help us see far away?
Why do planets orbit the Sun?
Why do meteors glow?
Why is Mars red?
What is gravity?
How do rockets steer in space?
Why do planets look different colours?
What are stars made of?
How do astronauts breathe in space?
Why do spacesuits look so bulky?
What is a satellite?
How do satellites stay in space?
Which planet is closest to the Sun?
Could people live on the Moon one day?
What is a galaxy?
Why does Earth spin?
How long does it take to get to the Moon?
What is an asteroid?
Why do stars look small?
How do astronauts sleep in space?
What is the Milky Way?
Why do we have day and night?
How do space probes explore planets?
Could there be life on other planets?
What is a black hole?
Why does the Sun look yellow?
How do planets get their names?
What is a space station?
Why do astronauts train underwater?
How do astronauts train for space?
What is moon dust?
Why does Mars have dust storms?
How do rockets come back to Earth?
Could humans visit another star?
Why is Venus hotter than Mercury?
Why does Jupiter have a giant red storm?
Why does the Moon have so many craters?
Why do astronaut helmets have shiny gold visors?
Why do rockets launch straight up first?
Why are some stars blue and some stars red?
Why do astronauts need exercise machines in space?
Why does Uranus spin on its side?
Why is Pluto called a dwarf planet?
Why does the Sun sometimes throw out giant bursts?
Why cannot astronauts cry like we do on Earth?
Why does the Moon sometimes look enormous?
Why do stars eventually die?
Why do planets spin at different speeds?
Why do astronauts grow taller in space?
Why do planets have moons?
Why does sunlight take time to reach Earth?
Why do shooting stars vanish so quickly?
Why is space almost completely empty?
Why do astronauts wear white spacesuits?
Why do black holes bend light?
Why are galaxies always moving?
Why do we always see the same side of the Moon?
Why does the universe keep getting bigger?
Why does the Moon sometimes seem to disappear?
How do astronauts eat without crumbs floating everywhere?
Why do stars seem to sparkle?
How do scientists discover new planets?
Why does Neptune have such wild winds?
Why do eclipses not happen every month?
How do rockets escape Earth's gravity?
How do stars change as they get older?
Why do planets stay round?
How do observatories choose where to look?
Why does the Moon have dark patches?
Why do astronauts practise emergencies again and again?
How do spacecraft send pictures back to Earth?
Why do planets not crash into each other?
Why does space look black?
How do scientists listen to space?
Why does time move differently near black holes?
How do scientists know what stars are made of?
Why do astronauts feel weightless?
How do planets form from dust?
Why do some stars explode?
How do we know there are planets we cannot see?
Why does space have no up or down?
How do space telescopes see invisible light?
Why do moons sometimes have oceans under ice?
How do scientists look back in time with telescopes?
Why do galaxies crash without stars hitting each other?
How do rockets survive the heat of re-entry?
Why do astronauts need special suits?
How do scientists measure things in space?
Why is there something instead of nothing?
How do scientists know the universe is expanding?
Why does time move forward?
How did the first stars form?
Why is Earth the only planet we know with life?
How do scientists search for alien life?
Why is the universe so dark if it has so many stars?
How old is the light from distant galaxies?
Why do black holes hide what is inside them?
How could humans live on another planet?
Why do planets need the right distance from a star?
How do scientists know Earth is billions of years old?
Why do space missions take so long?
How could we protect Earth from asteroids?
Why do stars make the ingredients for life?
How do scientists think the Moon formed?
Why do we keep exploring space?
How far can humans see into the universe?
Why might there be planets like Earth somewhere else?
How do scientists study things they cannot touch?
Why do astronauts see flashes with their eyes closed?
How do telescopes use mirrors to see faint galaxies?
Why do asteroids have strange lumpy shapes?
How can a spacecraft use a planet to speed up?
Why do comets sometimes break apart?
How do scientists weigh a planet without scales?
Why do some moons have volcanoes?
How do radio telescopes hear space?
Why do spacecraft use heat shields?
How can tiny satellites do real space science?
Why do spacecraft carry gyroscopes?
How do rovers drive on Mars without drivers nearby?
Why do launch windows matter?
How do scientists find planets by watching stars wobble?
Why does the Sun have spots?
How do solar sails move without fuel?
Why do astronauts' faces look puffy in space?
How can one telescope see invisible light?
Why do meteor showers happen at the same time each year?
How do spacecraft unfold giant solar panels?
Why is Mars covered in rusty dust?
How do astronauts sleep without a bed?
Why do rockets drop parts as they fly?
How do scientists know a moon has an ocean under ice?
Why do space probes spin?
How can a shadow help measure a crater?
Why does a lunar eclipse turn the Moon red?
Why do sunspots look dark on the bright Sun?
Why does the Sun's surface look covered in tiny cells?
Why does the Sun grow giant glowing loops?
Why can one day on Mercury last longer than its year?
Why can sunsets on Mars look blue?
Why did Mars grow a volcano far taller than Mount Everest?
Why does Jupiter have colourful stripes around it?
Why is there a giant hexagon at Saturn's north pole?
Why does Enceladus spray water into space?
Why is Europa covered in long cracks?
How do scientists know Titan has lakes?
Why are Uranus's rings so difficult to see?
Why do dark storms appear and disappear on Neptune?
Why do some moons orbit their planets backwards?
Why are some asteroids more like piles of rubble than solid rocks?
Why do comets sometimes break into several pieces?
How do scientists find meteorites in Antarctica?
Why do bright rays stretch away from some Moon craters?
How do hollow lava tunnels form on the Moon?
Why is Moon dust so sharp and clingy?
Why do astronauts hook their feet under bars in space?
How do spacesuits stop astronauts from overheating?
Why are spacecraft launch windows sometimes only minutes long?
How can a planet speed up a spacecraft without using rocket fuel?
Why do ion engines push so gently for so long?
How do spacecraft know which way they are pointing?
How can Earth hear a spacecraft billions of kilometres away?
Why are some radio telescopes shaped like enormous bowls?
How can several telescopes act like one giant telescope?
How do astronomers weigh stars they cannot touch?
How can a tiny planet make a huge star wobble?
Why do pulsars flash like cosmic lighthouses?
Why are neutron stars so unbelievably dense?
How can a galaxy bend the light from another galaxy?
Why do some spiral galaxies have a bright bar through the middle?
How can galaxies collide without most stars crashing into each other?
Why do some star clusters look like giant glowing balls?
How do astronomers map something they cannot see?
How do shepherd moons help shape a planet's rings?
Why is ancient light still travelling through the whole universe?
Why do some asteroids travel beside a planet without hitting it?
How can a spacecraft stay near the same place between moving worlds?
How can ice survive in craters on scorching Mercury?
How can it rain on Titan when the rain is not water?
Why can spinning too fast pull a small asteroid apart?
Why is space completely silent?
Why does the Sun look yellow if it is actually white?
How much bigger is the Sun than the Earth?
Why don't stars in a galaxy crash into each other?
What is a light-year and why do we use it?
Why does the space station circle Earth every 90 minutes?
Why is there no weather on the Moon?
Why do some planets have rings and others don't?
How do scientists know what stars are made of without visiting them?
Why is Mercury so hard to spot from Earth?
Why does Mercury swing between boiling hot and freezing cold?
Why did astronauts drop a hammer and a feather on the Moon?
Why do some comets come back to visit us again and again?
How do scientists decide what to name new planets and moons?
Why are scientists trying to bring rocks back from Mars?
Why do astronauts stay isolated before flying to space?
Why is the Moon slowly drifting away from Earth?
Why would Saturn actually float if you could find a big enough bathtub?
Why do most rockets launch towards the east?
What happens to old satellites once they stop working?
Why is the sun so hot?

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