Astronomy 103. The Moon

 La tercera clase de Astronomía. 

Si en la clase anterior hablamos sobre el sol; en esta clase hablaremos sobre nuestro satélite: La Luna

Aquí os dejo un vídeo muy sencillo de como hacer una luna para decorar nuestra habitación 

https://www.youtube.com/watch?v=s8OQj_7LbVk

Para ello necesitaremos:

- cartón o cartulina

- cuter (aunque en clase ya recibirán el dibujo recortado)

- compás

- pintura blanca y negra 

-  pincel o brocha para pintar 

- esponja

Welcome back, students to our third class of Astronomy in this year. If last class was about the Sun:our Star; today we will be talking about our Satellite: The Moon

https://www.youtube.com/watch?v=JM21GBJecx0

https://www.youtube.com/watch?v=qWsvEXzoKdE

Astronomy 103: The Moon

1) The Moon is a dusty ball of rock, measuring 3,476km in diameter – that’s roughly a quarter of the size of Earth.

2) Its surface is home to mountains, huge craters and flat planes called ‘seas’ made of hardened lava.

3) The Moon is Earth’s only natural satellite – a celestial body that orbits a planet. Its orbit around our planet is shaped like a slightly squashed circle known as an ellipse.

4) It takes 27.3 days for the Moon to travel all the way around the Earth and complete its orbit.

5) Although the Moon shines bright in the night sky, it doesn’t produce its own light. We see the Moon because it reflects light from the Sun.

6) Ever noticed how the Moon appears to change shape each night? That’s because as the Moon orbits the Earth, the Sun lights up different parts of its surface – so it’s just our view of the Moon that’s changing, not the Moon itself

7) As the Moon travels, it rotates on its own axis, just like our planet. It takes roughly the same amount of time for the Moon to make a full rotation as it does for it to complete its orbit. This means we only ever see around 60% of the Moon’s surface from Earth! The part that faces Earth is known as the ‘near side’ and the other, the ‘far side’.

8) The temperature on the Moon varies from super hot to super cold! When the Sun hits its surface, temperatures can reach a scorching 127°C. But when the Sun ‘goes down’, temperatures can plummet to around -153°C.

9) Like Earth, the Moon has gravity (the force that pulls things towards the ground). But the Moon’s gravity is weaker, only one sixth of the Earth’s gravity, in fact. That means you’d weigh much less if you were to stand on the Moon!

10) Scientists aren’t entirely sure how the Moon formed. A popular theory is that a Mars-sized rock, named Theia, crashed into Earth around 4.5 billion years ago. The debris from the collision clumped together to make what is now… Our Moon!