“To have good data, we need good satellites.” This itself tells us the importance of satellites. Space world is an interesting phenomenon to learn, grasp, understand and maybe worked on in the future. There are weather satellites, communications satellites, reconnaissance satellites, astronomy satellites and many other kinds that help us gather information related, increase our knowledge and make us more vigilant with the space world.
A satellite is an object that orbits another object. In space, satellites may be made by man, or they may be natural. The moon is a natural satellite that orbits the Earth. All the planets in our solar system have natural satellites except planets like Mercury and Venus.
Man-made satellites are machines made by people. These machines are launched into space and orbit Earth or another body in space. Man-made satellites are sent into space to gather information. Most are launched into space by rockets. Man-made satellites have several main uses like investigation related to science, observation of planets including weather forecasting, navigations including the Global Positioning
System (GPS), communications, etc.
Follow the below image to learn about the parts of a satellite. Commonly these are the components used.
Antennas & Transponders: are used to receive and transmit signals from and to Earth.
Thrusters: are used to position the satellites into the orbit.
Body: Contains operational heart of a satellite. that command & control every aspect.
Power Source/Solar Panels: most satellites use solar power as the main energy source to power itself. It converts sunlight into energy.
Small Square shaped cardboard box and cardboard rectangles
Popsicle Stick and Toothpicks
Transparent Plastic Cup
Scissor and Glue
Take a small cardboard square-shaped box
Cut out one side of this box
Leaving the opposite side of the box that we cut, make small holes in the center of both the sides
Slide a popsicle stick through the holes made on the two sides
Wrap the box with aluminum foil
Take a transparent plastic cup, cut it in half, and insert a colored chart paper in it, such that it surrounds the interior of the cup
Insert the cup in the side of the box that you had cut initially. Make sure the closed side of the cup faces outside. It will act as the antenna of your satellite
Cut cardboard rectangles which will act as flaps for the antenna
Wrap the flaps with the aluminum foil as well, making the act as the solar panels and stick them on the popsicle sticks
Take toothpicks and insert them at the top corner of the satellite
Bonus related activity - https://www.scprolab.com/activities-1/UNDERSTANDING-ROCKET-LAUNCH
The first man-made also called as an artificial satellite, Sputnik 1, was launched in 1957
Modern satellites are much more complicated
Most satellites are designed to be as strong and light as possible
Basic modeling of a Satellite:
A platform called a bus contains all systems, including the batteries, computer and thrusters
Attached to the bus are antennas, solar arrays and payload instruments such as cameras, telescopes and communications equipment
Satellites have to power themselves. This is usually done by using large solar arrays (wings) covered with light-sensitive solar cells
Man-made satellites have several main uses like investigation related to science, observation of planets including weather forecasting, navigations including the Global Positioning System (GPS), communications, etc.