Top 10, 10th Sci,part I,  Space Missions, 10 वी विज्ञान, भाग I, अवकाश मोहीम. 

आपल्या माहिती विज्ञानाची 🎷 या What's App समूहात सामील होण्यासाठी खालील निळ्या लिंकला स्पर्श करा👇

👉 माहिती विज्ञानाची 🎷

       * Structure of PSLV made by ISRO.

Classification of artificial satellite

• Weather satellite: to study and  Predict tomorrow's and future weather conditions. 
• Communication satellite: to communicate between different locations in the world.
• Broadcasting satellite: to telecast television and radio programs in the world.
• Military satellite: connecting information regarding security aspects including International borders.
• Navigational satellite: to locate the place precisely in terms of its latitudes and longitude and with that assist the surface, water, and air transportation.
• Earth observation satellite:
 a. collect information about natural calamities.
• b. To study various aspects of the Earth's surface including forests, oceans, and polar regions.

Orbits of artificial satellites
• Definition:  a regular, repeating path around Earth is called the orbit of a satellite.
• The function of a satellite decides its orbit.
• Orbit can be circular or elliptical.
• Based on the height of the satellite from the surface of the Earth surface satellites are classified as 
• A high-orbit satellite
• B medium Earth satellite
• C low Earth orbit satellites.


*. High Earth orbit satellites(HEO)
• DEFINITION:- Those satellites orbiting at heights equal to or greater than 35780 km about the surface of the earth's surface are called High Earth orbit satellites.
• These satellites are called geostationary or Geosynchronous satellites because they will appear stationary concerning a place on the Earth.
• Use: HEO satellites are used for climatology, telecommunication, transmission of TV and radio programs, Scientific research, etc.

* Medium Earth orbit satellite(MEO)
• Definition: A satellite orbiting at a height between 2000 km and 35780 km about the earth's surface is called a medium Earth orbit satellite.
• The orbital path of such a satellite is normally electrical and passes through the north and the South polar regions.
• Use: These satellites are useful for significant roles in global navigation systems.

* Low Earth Orbit Satellite(LEO)

• Definition a satellite orbiting at a height between 180 km and 2000 km about the Earth's surface is called a Low Earth Orbit Satellite.
• There are over 3000 satellites in LEO.
• Use: Weather satellites and the International Space Station are 
• Low Earth Orbit Satellite
• LEO satellites are used for Earth observation.

* Management of space debris.

• Cause:Due to failed launching, there are many satellites and other parts of launchers, roaming freely in different orbits around Earth.
• There are about 2 crore small and large pieces of satellites and launchers revolving around the earth.
• Harm: this debris certainly poses a threat to the current functional satellites, space shuttles, and space stations.
• This debris is likely to be risky for all the future launching of satellites and space shuttles.

* Rocket
• 'Rocket' a type of firecracker used in Diwali is also a sort of launcher.
• In this rocket, the fuel is ignited using a fuse, and the rocket is projected into the sky.
• The function of the rocket is based on Newton's third law of motion.


* Swayam:
•  A group of students from COEP (College of Engineering, Pune) made a small satellite and sent it to space through ISRO in 2016.
• The name of the satellite is 'Swayam' and its mass is around 1 kg.
• Swayam is orbiting the Earth at a height of 515 km.
• The main objective of the satellite was to provide point-to-point messaging services using a special method.



🎷 The sentence is short but the information is great.

* EDUSAT satellite is used in the educational field among INSAT and GSAT- series.

* All satellites work on solar energy.

* Russia executed the first-ever mission to the moon in the world.

* USA executed the first manned mission to the moon in the world.

* The shortest time taken by a spacecraft to reach the moon, so far, is 8 hours and 36 minutes.

* PSLV satellite launchers are developed by India.

* Chandrayaan-1 discovered the presence of water on the moon.

* The minimum velocity of the spacecraft's escape from the Earth's gravitational force must be 11.2 km/s

* The astronomical object closest to us is the Moon in our galaxy.

* Satellite launch centers:
• Tumba, Thiruvananthapuram
• Shriharikota
• Chandipur, Odisha


* Space research organizations:
• Vikram Sarabhai Space Center, Thiruvananthapuram.
• Satish Dhawan Space Research Centre, Sriharikota
• Space Application Centre, Ahmedabad

* Orbits of satellite

शास्त्रज्ञांच्या मते एका अंदाजानुसार काही वर्षात पृथ्वीभोवती फिरणाऱ्या उपग्रहांची संख्या दहा लाखापर्यंत पोहोचेल. पृथ्वीच्या खालच्या कक्षेत 9 हजाराहून अधिक उपग्रह स्थापित करण्यात आले आहेत त्यापैकी पाच हजाराहून अधिक स्टार लिंग चे आहेत हे एक प्रकारचे तारा मंडळ आहे जे पृथ्वीच्या प्रत्येक कोपऱ्यात इंटरनेट सेवा स्थापित करण्यासाठी स्पेस एक्स तयार करत आहे हे पूर्ण करण्यासाठी हजारो उपग्रह पाठवायचे आहेत. सौजन्य🙏 12 जानेवारी 2024 दिव्य मराठी आवृत्ती छत्रपती संभाजीनगर.

     *वाईट बातमीला पंख असतात.*

            *तर...,*

            *शुभ बातमीला पायच नसतात.*

            *आयुष्यात जिथे पर्याय म्हणुन कुणी नसतं,*

            *तिथे...*

            *उत्तर म्हणुन स्वतःच उभं रहायच असतं...!!!*

            *आपला दिवस आनंदी जावो. 🎷