Earth & Space Science

Use this for “A 50 kg student weighs 490 N on Earth. What would she weigh on the moon?”

Use this for “Mars is 1.5 times as far from the sun as Earth. How long is its year?”

Use this for “Why do the sun and moon look about the same size?” and “How many Earths wide is Jupiter?”

Use this for “Why does the moon look like a crescent some nights and a full circle on others?”

Use this for “Why don’t we see an eclipse every month?” and “Which eclipse happens at full moon?”