The focus of the science and technology handwritten newspaper is to highlight the little knowledge of science and technology, which can serve the purpose of popularizing common sense to everyone.

Example:

Artificial earth satellite, referred to as "artificial satellite". A spacecraft that is launched to a high altitude by a launch vehicle and orbits the earth along a certain orbit. The satellites have various shapes, including spherical, polyhedral, cylindrical, tower-shaped, as well as dumbbells, crowns, butterflies and rocs. Artificial earth satellites of the same shape are widely used and come in many types;

There are space "messenger" communication satellites, space "remote sensors", earth resource satellites, space "weather stations" meteorological satellites, space "guide" navigation satellites, Space "Jianmou" reconnaissance satellite, space "Broadcaster" broadcast satellite, space "Surveyor" earth survey satellite, space "Claireye" astronomical satellite, etc.;

Constitute a huge "satellite family" to build earth satellites It has the ability to conduct all-round observations of the earth. Its biggest feature is its commanding position and large field of view. A satellite orbiting above the equator can cover an area of ??163 million square kilometers of the earth's surface, which is larger than that of an 8,000-meter high-altitude reconnaissance aircraft. The area of ????Xia Gai is more than 5,600 times larger.

Therefore, it has advantages that cannot be matched by other means for completing tasks such as communication, reconnaissance, and navigation.