In our article “Become a space engineer and build your own ships”from April 28, 2023 we present pro Children’s Daywebsites for downloading, printing and building spacecraft models such as Apollo NASA, Russian Soyuz, Hubble telescopes or James Webas well as the GTM telescope in Puebla, Mexico.
Likewise, this year we present a Celestial sphere and one Moon assemble. Ask an adult to help you use scissors and glue.
Celestial sphere
On webside www.atlasofttheuniverse.comby astronomer Richard Powell, we found a nice one Model of the celestial sphere ready to print, available in three colors: dark blue, light blue and gray for black ink printers. Each model is on three sides.
It is recommended to print on thick paper or cardboard, as it will be difficult to assemble on paper.
The Celeste Sphere represents 88 constellations with their main stars, boundaries between constellations, celestial coordinates (right ascension and declination) and the ecliptic line appears in the dark blue and gray models. This line is the plane of the Solar System, it is where the Sun, the planets and the Moon move. The ecliptic passes through 13 constellations, zodiacs, of which 12 are traditionally considered.
When finished, you will get a polyhedron with a diameter of 15 cm.
What is a celestial sphere?
The Celestial sphere It is an ideal representation of the sky that helps us organize it and makes it easier to study. It is the sphere that surrounds the Earth and contains the stars that we observe at night, grouped into 88 constellations: 36 in the Northern Hemisphere and 52 in the Southern Hemisphere.
We must never forget that Celestial sphere It is only an ideal representation of the starry sky, because there is no starball around the Earth, the stars are not at the same distance from our planet, and constellation They are figments of human imagination that do not exist in it Universe.
For a month
As for the moon, NASA gives us a nice model to build birthday 50 (2019) on the arrival of human beings in our natural satellite (1969).
If you only want Moonyou won’t have to print in color if you want too astronautprint in color.
On page 1 the moon is divided into two hemispheres, northern (upper) and southern (lower), on page 2 there are two circles, they are the bases for each hemisphere, the one in the text is for the northern hemisphere and the one in the trace astronaut It is for the southern hemisphere.
Each segment of each hemisphere is glued to the tab of the basic circles. The letter “A” indicates where to join the two hemispheres with adhesive tape.
If you want to place astronautis inserted into the white line in which you must make a cut, located at the North Pole.
Belt with legend Apollo 50 It is a ring-shaped base for the placement of the moon.
Moon phase
The interestingness of the model Moon is that it will help us to know the phases of the moon or why we always see the same side of the moon. It will help you in your classes to see this topic.
They are like that Moon and with the northern hemisphere up, look at the side with the seas (dark areas), it is the side we always see.
Reach out to the moon and choose the window you will be Solyou will Tierra.
When you turn on your feet, you always see the same side of the moon. This is because the Moon makes one revolution around the Earth in 28 days and at the same time the Moon rotates on its axis and also completes one revolution in 28 days. It always shows us the same page.
This movement is called Synchronous rotation and this is also presented by the major months Jupiter and some exoplanets are exoplanets with eternal day on one side and eternal night on the other.
As the moon revolves around the earth, raise your arm a little and lower it as it rotates, not too much. This is because the Moon’s orbit around the Earth is tilted by 5º.
You’ll notice that as the Moon orbits the Earth, waxing and waning, there are two points in the Moon’s orbit that intersect the Sun-Earth plane. It will take until the Moon’s orbit rotates and brings these two points (nodes) into position for the Moon to cover the Sun, causing Sol Eclipse and 14 days before or after the Moon enters the Earth’s shadow and causes a lunar eclipse. This is why we don’t have Eclipses every month and why Eclipse They come in pairs because the orbit hasn’t changed much in 14 days.
As you may have noticed, when the Moon is on the side of the Sun, we cannot see it (new month), the moon is illuminated on the side that we cannot see, and therefore it is incorrect to call it the dark side, it is better to call it the hidden side. When the Moon is behind the Earth relative to the Sun, we will see it fully illuminated, it is a full moon. For this reason, solar eclipses occur only at new moons and lunar eclipses at full moons. In the phases of the waning or waxing quarter, we see part of the Moon illuminated and part not illuminated.
Happy Children’s Day!
german@astropuebla.org
