Why is Earth bigger than Mars?

When compared to our planet Mars is very tiny, possessing around ten per cent of Earth’s total mass
How does the Sun work?

How does the Sun work? – video

A celestial wonder, the Sun is a massive star that formed from a massive gravitational collapse when space dust and gas from a nebula collided, forming into an orb that is 100 times bigger and weighs over 300,000 times that of planet Earth

How do spacesuits keep astronauts alive?

It’s probably best to think of a spacesuit not as an item of clothing – like a jumper you’d put on when it’s cold or a pair of wellies to keep your feet dry – but as a habitat or a small personal spaceship astronauts wear

What is a supermoon?

What causes the Moon to occasionally appear bigger and brighter than usual

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