Did you know that outer space, what we call the universe, is absolutely silent as there is no atmosphere for sound to travel through! And it isn’t possible to walk on planets like Neptune, Jupiter, or Saturn as they don’t have a solid surface like we do on Earth. They’re made up mostly of different gases like hydrogen and helium. And they spin more rapidly than Earth – while the Earth spins on its center once every 24 hours, Saturn spins once every 10 hours.
And there are more stars in outer space than there are grains of sand on Earth. It is believed that there are between 200-400 billion stars just in the Milky Way, which is our spiral shaped galaxy in the sky that contains the sun and all the stars, and of which Earth’s solar system is a very, very small part. It is believed that there are about 100 billion galaxies like the Milky Way, which means there could be around 100 billion Earth-like planets in our galaxy alone!
And did you know that the Sun is about one million times larger than the size of the Earth, which means 1 million Earths could fit inside the sun and it takes the light from the Sun about 8 minutes to reach Earth.
The moon, on the other hand, doesn’t have any light of its own. The light from the sun’s rays bounce off of the moon and reach the Earth in 1.25 seconds. This is how we get moonlight. The first person to walk on the moon was Neil Armstrong in 1969. You can still see traces of his footprints on the moon’s surface. This is because there’s no wind on the moon, and so the footprints are still mostly intact 52 years later!
The moon and the sun are the reason the ocean has waves and tides that switch from high tide to low tide. The gravitational pull from the moon and the sun keep changing.
And have you ever heard of Mount Everest? If so, I bet you think it is the highest mountain ever. While it is the highest mountain on Earth, the highest mountain known to man is on an asteroid called Vesta and is over 13 miles high or 72178 feet high: which is three times as big as Mount Everest.
So now you know more about outer space. What was your favorite fact? Thanks for exploring with me. See ya next time when we travel … Around The World.